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  • 1. Abarca, R. R. M.
    et al.
    Gaudio, M. T.
    Chakraborty, S.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Metals toxic pollutants in the environment: Anthropogenic and geological causes and remediation2019Ingår i: Current Trends and Future Developments on (Bio-) Membranes: Membranes in Environmental Applications, Elsevier Inc. , 2019, s. 109-124Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    Heavy metals are naturally present in nature, but if their concentration is higher than the normal accepted threshold levels, they constitute one of the pollutants that is more difficult to remove and also to rehabilitate the contaminated site by them. There are many heavy-metal pollutants-the most common among them are arsenic (As), chromium (Cr), lead (Pb), mercury (Hg), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni), selenium (Se), and zinc (Zn), along with the less common ones, which produced, for example, by the nuclear process, such as uranium (U)-in different configuration; hence, many possibilities of contamination in the world exist, and they are more difficult to remove.Thus heavy-metal pollution is more and more becoming one of the principal issues of the global interest, because it is common to both industrialized countries and developing countries. These issues are getting hard to be recognized and cannot be followed the simple rules concerning safety and environmental protection, thus fall into the same errors of the already industrialized countries. At the same time, new environment-remediation techniques are developed in the last decade, especially, in these last years. Some of these technologies concern physical or chemical process or effects, such as ion exchanges, flotations, and photocatalysis, while other technologies concern the use of membrane process, especially ultrafiltration or membrane integrated process or hybrid systems, where membranes are generally submerged and used together with another process.In this chapter a review of this problem and some example of technologies for removing and remediation of the environment are reported. 

  • 2. Agathokleous, E.
    et al.
    Barceló, D.
    Aschner, M.
    Azevedo, R. A.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Costantini, D.
    Cutler, G. C.
    De Marco, A.
    Docea, A. O.
    Dórea, J. G.
    Duke, S. O.
    Efferth, T.
    Fatta-Kassinos, D.
    Fotopoulos, V.
    Ginebreda, A.
    Guedes, R. N. C.
    Hayes, A. W.
    Iavicoli, I.
    Kalantzi, O. -I
    Koike, T.
    Kouretas, D.
    Kumar, M.
    Manautou, J. E.
    Moore, M. N.
    Paoletti, E.
    Peñuelas, J.
    Picó, Y.
    Reiter, R. J.
    Rezaee, R.
    Rinklebe, J.
    Rocha-Santos, T.
    Sicard, P.
    Sonne, C.
    Teaf, C.
    Tsatsakis, A.
    Vardavas, A. I.
    Wang, W.
    Zeng, E. Y.
    Calabrese, E. J.
    Rethinking Subthreshold Effects in Regulatory Chemical Risk Assessments2022Ingår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 56, nr 16, s. 11095-11099Artikel i tidskrift (Refereegranskat)
  • 3.
    Ahmad, Arslan
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Arsenic in Drinking Water: Is 10 μg/L a Safe Limit?2019Ingår i: Current Pollution Reports, ISSN 2198-6592, Vol. 5, nr 1Artikel i tidskrift (Refereegranskat)
  • 4.
    Ahmad, Arslan
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. SIBELCO Ankerpoort NV, Op Bos 300, NL-6223 EP Maastricht, Netherlands.;Wageningen Univ & Res WUR, Dept Environm Technol, Droevendaalsesteeg 4, NL-6708 PB Wageningen, Netherlands..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Global Groundwater: Source, Scarcity, Security and Solutions2021Ingår i: Groundwater for Sustainable Development, ISSN 2352-801X, Vol. 15, artikel-id 100605Artikel, recension (Övrigt vetenskapligt)
  • 5. Ahmed, K. M.
    et al.
    van Geen, A.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Implementation of arsenic mitigation: Insights from Araihazar and Matlab – two extensively studied areas in Bangladesh2018Ingår i: Environmental Arsenic in a ChangingWorld - 7th International Congress and Exhibition Arsenic in the Environment, 2018, CRC Press/Balkema , 2018, s. 565-566Konferensbidrag (Refereegranskat)
    Abstract [en]

    Despite many efforts over the last 25 years, millions of people are still drinking groundwater having arsenic above Bangladesh and World Health Organization limits. This can be linked, to some extent, to a lack of pragmatic policies and implementation strategies. Important lessons have been learned from extensive studies in Araihazar and Matlab in Bangladesh. Also better mitigation strategies for reducing arsenic exposure have been demonstrated at both locations. New policy and mitigation strategies should focus on mapping using mobile technology for village scale mapping. Dissemination of test result is extremely important in increasing awareness of the users and a new three-color scheme (Blue, Green, Red corresponding to <10, 10–50, and >50 µg L−1) instead of existing Red-Green color scheme should be adopted to lower arsenic intake. Safe wells can be installed at appropriate locations and depth by combining hydrogeological and social criteria aided by applications-based score ranking.

  • 6.
    Alam, Mohammad Ayaz
    et al.
    Univ Santiago De Chile, Fac Ingn, Dept Ingn Geoespacial & Ambiental, Enr Kirberg Baltiansky n 03, Estn Cent, Santiago, Metropolitana, Chile..
    Mukherjee, Abhijit
    Indian Inst Technol Kharagpur, Dept Geol & Geophys, Kharagpur, W Bengal, India..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Bundschuh, Jochen
    Univ Southern Queensland, Fac Hlth Engn & Sci, Sch Engn, West St, Toowoomba, Qld, Australia..
    An appraisal of the principal concerns and controlling factors for Arsenic contamination in Chile2023Ingår i: Scientific Reports, E-ISSN 2045-2322, Vol. 13, nr 1Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Although geogenic Arsenic (As) contamination is well-recognized in northern Chile, it is not restricted to this part of the country, as the geological conditions favoring As release to the human environment exist across the country as well, although not at the same level, based on comparatively fewer studies in central and southern Chile. The present work provides a critical evaluation of As sources, pathways, and controls with reports and case studies from across the country based on an exhaustive bibliographic review of its reported geogenic sources and processes that affect its occurrence, systematization, and critical revision of this information. Arc magmatism and associated geothermal activities, identified as the primary As sources, are present across the Chilean Andes, except for the Pampean Flat Slab and Patagonian Volcanic Gap. Metal sulfide ore zones, extending from the country's far north to the south-central part, are the second most important geogenic As source. While natural leaching of As-rich mineral deposits contaminates the water in contact, associated mining, and metallurgical activities result in additional As release into the human environment through mining waste and tailings. Moreover, crustal thickness has been suggested as a principal controlling factor for As release, whose southward decrease has been correlated with lower As values.

  • 7.
    Albers, Eva
    et al.
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Ind Biotechnol, SE-41296 Gothenburg, Sweden..
    Malmhall-Bah, Eric
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Ind Biotechnol, SE-41296 Gothenburg, Sweden..
    Olsson, Joakim
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Ind Biotechnol, SE-41296 Gothenburg, Sweden..
    Sterner, Martin
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Mayers, Joshua J.
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Ind Biotechnol, SE-41296 Gothenburg, Sweden..
    Nylund, Goran M.
    Univ Gothenburg, Dept Marine Sci Tjarno, SE-45296 Stromstad, Sweden..
    Rupar-Gadd, Katarina
    Linnaeus Univ, Dept Built Environm & Energy Technol, Luckligs Plats 3, SE-35195 Växjö, Sweden..
    Abdollahi, Mehdi
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Food & Nutr Sci, SE-41296 Gothenburg, Sweden..
    Cvijetinovic, Suzana
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Ind Biotechnol, SE-41296 Gothenburg, Sweden..
    Welander, Ulrika
    Linnaeus Univ, Dept Built Environm & Energy Technol, Luckligs Plats 3, SE-35195 Växjö, Sweden..
    Edlund, Ulrica
    KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi.
    Pavia, Henrik
    Univ Gothenburg, Dept Marine Sci Tjarno, SE-45296 Stromstad, Sweden..
    Undeland, Ingrid
    Chalmers Univ Technol, Dept Biol & Biol Engn, Div Food & Nutr Sci, SE-41296 Gothenburg, Sweden..
    Influence of preservation methods on biochemical composition and downstream processing of cultivated Saccharina latissima biomass2021Ingår i: Algal Research, ISSN 2211-9264, Vol. 55, artikel-id 102261Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Saccharina latissima biomass cultivated along the Swedish west coast was subjected to four different scalable preservation methods after harvest; freezing, sun-drying, oven-drying and ensiling. Freeze-drying and freezing at -80 ?C were also included to provide dry and wet references. The effects of the different preservation methods on the composition of Saccharina biomass (on dry weight, DW, basis), and the recovery as well as properties of high-quality protein, alginate and biogas were evaluated. Sun-drying significantly reduced protein, alginate and fatty acid content of the seaweeds and thereby concentrated ash in the biomass compared to the other methods. Protein/amino acids and fatty acids were significantly concentrated in ensiled biomass, while mannitol and laminarin were reduced compared to the other biomasses. Oven-drying and -20 ?C freezing affected the composition the least, with lower ash content and alterations in some specific amino and fatty acids. Sun-drying and ensiling resulted in significantly lower protein solubility at high pH compared to the other biomasses which translated into the lowest total seaweed protein recovery using the pH-shift process. Highest protein yield was obtained with the freeze-dried reference. Ensiling lead to a significant decrease in the molecular weight of alginate, while sun-drying caused a negative effect on alginate by inducing a shift in the guluronic and mannuronic acids composition of alginate. Sun-drying gave the lowest methane yield in the anaerobic digestion experiments while freezing at -80 ?C gave the highest yield, closely followed by freezing at -20 ?C and ensiling. To conclude, preservation methods must be carefully chosen to protect the valuable component in Saccharina latissima, and to achieve an efficient downstream processing ultimately yielding high quality products as part of a seaweed biorefinery.

  • 8. Ali, S.
    et al.
    Shekhar, S.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Verma, G.
    Chandrasekhar, T.
    Chandrashekhar, A. K.
    Elevated fluoride in groundwater of Siwani Block, Western Haryana, India: A potential concern for sustainable water supplies for drinking and irrigation2018Ingår i: Groundwater for Sustainable Development, ISSN 2352-801X, Vol. 7, s. 410-420Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Groundwater pollution is a serious health concern in north-western India. In this study, we have reported very high concentration of fluoride i.e. 18.5 and 16.6 mg/l from Sainiwas locality in Siwani block of Bhiwani district, Haryana, India. The values are much higher than the permissible limit set by WHO and BIS. The evapotranspiration in the area leads to Ca2+ precipitation, which allows an increase in F- content in the groundwater. In addition, the replacement of hydroxyl of secondary clay mineral under alkaline condition is responsible for release of F-. In absence of alternative source, the fluoride polluted groundwater in some of these localities is also used for drinking. Further, the suitability of groundwater for irrigation is also evaluated by various parameters such as Sodium Adsorption Ratio (SAR), Sodium Percentage (Na%), Kelly's Ratio (KR), Magnesium Hazard (MH) and Residual Sodium Carbonate (RSC). It emerges out that in a few localities, groundwater is not suitable for irrigation and with respect to Magnesium Hazard (MH) almost all samples are unsuitable for irrigation. This article highlights groundwater quality of Siwani block in Haryana and proposes for immediate remedial measures. 

  • 9. Ali, S.
    et al.
    Shekhar, S.
    Chandrasekhar, T.
    Yadav, A. K.
    Arora, N. K.
    Kashyap, C. A.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Rai, S. P.
    Pande, P.
    Chandrasekharam, D.
    Influence of the water–sediment interaction on the major ions chemistry and fluoride pollution in groundwater of the Older Alluvial Plains of Delhi, India2021Ingår i: Journal of Earth System Science, ISSN 2347-4327, Vol. 130, nr 2, artikel-id 98Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Fluoride (F–) pollution in groundwater of the Older Alluvial Plain (OAP) of Delhi has been reported as a major problem. About 34% of the groundwater samples collected for this study had F– level beyond the permissible limit; with F– concentration in the range of 0.14–3.15 mg/L (average 1.20 mg/L). In this context, this article for the first time attempts on the genesis of major ions chemistry and F– pollution in groundwater of OAP Delhi by going beyond the statistical analysis to sediment geochemistry, chemical weathering processes and understanding of the processes using stable environmental isotopes (2H and 18O). The XRD of the OAP sediments revealed the dominance of fluor-biotite, albite, calcite, quartz, and chlorite. Whereas, the separated clay revealed the dominance of chlorite, kaolinite, and illite minerals. The saturation index (SI) values indicated that the groundwater chemistry is in the process of further F– enrichment by way of sediment groundwater interaction. With the given mineralogy of the sediments, the dominance of major ions like Na+, K+, Mg2+, Ca2+, Cl– and F– has been attributed to chemical weathering of biotites, phlogopites, albite, and calcite during sediment–water interaction. While the dominance of SO42– has been attributed to anthropogenic sources and confirmed by its association with heavier stable isotopes of hydrogen (δ2H: −50.44 to −40.02‰) and oxygen (δ18O: −7.19 to −5.62‰) indicating evaporative enrichment during isotopic fractionation.

  • 10.
    Aliabad, Fahime Arabi
    et al.
    Yazd Univ, Fac Nat Resources & Desert Studies, Dept Arid Land Management, Yazd 8915818411, Iran..
    Malamiri, Hamid Reza Ghafarian
    Yazd Univ, Dept Geog, Yazd 8915818411, Iran.;Delft Univ Technol, Dept Geosci & Engn, NL-2628 CD Delft, Netherlands..
    Shojaei, Saeed
    Univ Tehran, Fac Nat Resources, Dept Arid & Mt Reg Reclamat, Tehran 1417935840, Iran..
    Sarsangi, Alireza
    Univ Tehran, Fac Geog, Dept Remote Sensing & GIS, Tehran 1417935840, Iran..
    Ferreira, Carla Sofia Santos
    Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, S-10691 Stockholm, Sweden.;Polytech Inst Coimbra, Agr Sch Coimbra, Res Ctr Nat Resources Environm & Soc CERNAS, P-3045601 Coimbra, Portugal..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, S-10691 Stockholm, Sweden..
    Investigating the Ability to Identify New Constructions in Urban Areas Using Images from Unmanned Aerial Vehicles, Google Earth, and Sentinel-22022Ingår i: Remote Sensing, E-ISSN 2072-4292, Vol. 14, nr 13, artikel-id 3227Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    One of the main problems in developing countries is unplanned urban growth and land use change. Timely identification of new constructions can be a good solution to mitigate some environmental and social problems. This study examined the possibility of identifying new constructions in urban areas using images from unmanned aerial vehicles (UAV), Google Earth and Sentinel-2. The accuracy of the land cover map obtained using these images was investigated using pixel-based processing methods (maximum likelihood, minimum distance, Mahalanobis, spectral angle mapping (SAM)) and object-based methods (Bayes, support vector machine (SVM), K-nearest-neighbor (KNN), decision tree, random forest). The use of DSM to increase the accuracy of classification of UAV images and the use of NDVI to identify vegetation in Sentinel-2 images were also investigated. The object-based KNN method was found to have the greatest accuracy in classifying UAV images (kappa coefficient = 0.93), and the use of DSM increased the classification accuracy by 4%. Evaluations of the accuracy of Google Earth images showed that KNN was also the best method for preparing a land cover map using these images (kappa coefficient = 0.83). The KNN and SVM methods showed the highest accuracy in preparing land cover maps using Sentinel-2 images (kappa coefficient = 0.87 and 0.85, respectively). The accuracy of classification was not increased when using NDVI due to the small percentage of vegetation cover in the study area. On examining the advantages and disadvantages of the different methods, a novel method for identifying new rural constructions was devised. This method uses only one UAV imaging per year to determine the exact position of urban areas with no constructions and then examines spectral changes in related Sentinel-2 pixels that might indicate new constructions in these areas. On-site observations confirmed the accuracy of this method.

  • 11.
    Aliabad, Fahime Arabi
    et al.
    Yazd Univ, Fac Nat Resources & Desert Studies, Dept Arid Lands Management, Yazd 8915818411, Iran..
    Shojaei, Saeed
    Univ Tehran, Fac Nat Resources, Dept Arid & Mountainous Reg Reclamat, Tehran 1417935840, Iran..
    Mortaz, Morad
    Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA..
    Ferreira, Carla Sofia Santos
    Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden.;Polytech Inst Coimbra, Res Ctr Nat Resources Environm & Soc CERNAS, Agr Sch Coimbra, P-3045601 Coimbra, Portugal..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden..
    Use of Landsat 8 and UAV Images to Assess Changes in Temperature and Evapotranspiration by Economic Trees following Foliar Spraying with Light-Reflecting Compounds2022Ingår i: Remote Sensing, E-ISSN 2072-4292, Vol. 14, nr 23, s. 6153-, artikel-id 6153Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Pistachio is an important economic crop in arid and semi-arid regions of Iran. A major problem leading to a reduction in crop quality and reduced marketability is extreme air temperature in summer, which causes sunburn of pistachio leaves and fruit. A solution proposed to deal with the negative effects of high temperatures and increase water consumption efficiency in pistachio orchards is use of light-reflecting compounds. This study investigated the effect of foliar application of gypsum, sulfur, and NAX-95 (calcium-based suspension coating) to trees in a pistachio orchard (150 ha) in central Iran. The effect of these foliar products is assessed at plot scale, using control plots sprayed with calcium sulfate, based on temperature and evapotranspiration changes analyzed through remote sensing. Landsat 8 sensor images and RGB images collected by UAVs (spatial resolution of 30 m and 20 cm, respectively), on the same dates, before and after foliar spray application, were merged using the PCA method and bilinear interpolation re-sampling. Land surface temperature (LST) was then estimated using the split-window algorithm, and daily evapotranspiration using the surface energy balance algorithm for land (SEBAL) algorithm. A land use map was prepared and used to isolate pistachio trees in the field and assess weed cover, whose effect was not accounted. The results showed that temperature remained constant in the control plot between the spraying dates, indicating no environmental changes. In the main plots, gypsum had the greatest effect in reducing the temperature of pistachio trees. The plots with foliar spraying with gypsum displayed a mean tree temperature (47-48 degrees C) decrease of 3.3 degrees C in comparison with the control plots (>49 degrees C), leading to an average decline in evapotranspiration of 0.18 mm/day. NAX-95 and sulfur reduced tree temperature by on average 1.3 degrees C and 0.6 degrees C, respectively. Thus, gypsum is the most suitable foliar-spraying compound to lower the temperature of pistachio trees, reduce the water requirement, and increase crop productivity.

  • 12. Allakulov, Umrbek
    et al.
    Cocciolo, Serena
    Das, Binayak
    Habib, Md. Ahasan
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. NGO Forum for Public Health, Dhaka, Bangladesh.
    Rambjer, Lovisa
    Tompsett, Anna
    Transparency, governance, and water and sanitation: Experimental evidence from schools in rural Bangladesh2023Ingår i: Journal of Development Economics, ISSN 0304-3878, E-ISSN 1872-6089, Vol. 163, artikel-id 103082Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Can transparency interventions improve WASH service provision? We use a randomized experiment to evaluate the impacts of a transparency intervention, a deliberative multi-stakeholder workshop initiated with a community scorecard exercise, in schools in rural Bangladesh. To measure impacts, we combine survey data, direct observations, and administrative data. The intervention leads to moderate but consistent improvements in knowledge of WASH standards and practices, and institutions for WASH service management, but does not improve school WASH service provision or change WASH facility use patterns. Drawing on rich descriptive data, we suggest several reasons why the intervention we evaluate did not improve WASH service outcomes and propose ways to improve the design of future interventions.

  • 13.
    Amin, Nuhu
    et al.
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh.;Univ Technol Sydney, Inst Sustainable Futures, 235 Jones St, Ultimo, NSW 2007, Australia..
    Haque, Rehnuma
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh.;Stanford Univ, Sch Med, Stanford, CA USA..
    Rahman, Md. Ziaur
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh..
    Rahman, Mohammed Ziaur
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh..
    Mahmud, Zahid Hayat
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh..
    Hasan, Rezaul
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh..
    Islam, MD Tahmidul
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. WaterAid, Dhaka, Bangladesh..
    Sarker, Protim
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh..
    Sarker, Supriya
    Directorate Gen Hlth Serv DGHS, Dhaka, Bangladesh..
    Adnan, Shaikh Daud
    Directorate Gen Hlth Serv DGHS, Dhaka, Bangladesh..
    Akter, Nargis
    UNICEF, Water Sanitat & Hyg WASH Sect, Dhaka, Bangladesh..
    Johnston, Dara
    UNICEF, Water Sanitat & Hyg WASH Sect, Dhaka, Bangladesh..
    Rahman, Mahbubur
    Int Ctr Diarrhoeal Dis Res Bangladesh Icddr B, Infect Dis Div, Dhaka, Bangladesh.;Inst Epidemiol Dis Control & Res IEDCR, Dhaka, Bangladesh..
    Liu, Pengbo
    Emory Univ, Ctr Global Safe Water Sanitat & Hyg, Atlanta, GA USA..
    Wang, Yuke
    Emory Univ, Ctr Global Safe Water Sanitat & Hyg, Atlanta, GA USA..
    Shirin, Tahmina
    Inst Epidemiol Dis Control & Res IEDCR, Dhaka, Bangladesh..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Dependency of sanitation infrastructure on the discharge of faecal coliform and SARS-CoV-2 viral RNA in wastewater from COVID and non-COVID hospitals in Dhaka, Bangladesh2023Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 867, artikel-id 161424Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The detection of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) RNA in wastewater can be used as an indicator of the presence of SARS-CoV-2 infection in specific catchment areas. We conducted a hospital-based study to explore wastewater management in healthcare facilities and analyzed SARS-CoV-2 RNA in the hospital wastewater in Dhaka city during the Coronavirus disease (COVID-19) outbreak between September 2020-January 2021. We selected three COVID-hospitals, two non-COVID-hospitals, and one non-COVID-hospital with COVID wards, conducted spot-checks of the sanitation systems (i.e., toilets, drainage, and septic-tank), and collected 90 untreated wastewater effluent samples (68 from COVID and 22 from non-COVID hospitals). E. coli was detected using a membrane filtration technique and reported as colony forming unit (CFU). SARS-CoV-2 RNA was detected using the iTaq Universal Probes One-Step kit for RT-qPCR amplification of the SARS-CoV-2 ORF1ab and N gene targets and quantified for SARS-CoV-2 genome equivalent copies (GEC) per mL of sample. None of the six hospitals had a primary wastewater treatment facility; two COVID hospitals had functional septic tanks, and the rest of the hospitals had either broken onsite systems or no containment of wastewater. Overall, 100 % of wastewater samples were positive with a high concentration of E.coli (mean = 7.0 log10 CFU/100 mL). Overall, 67 % (60/90) samples were positive for SARS-CoV-2. The highest SARS-CoV-2 concentrations (median: 141 GEC/mL; range: 13-18,214) were detected in wastewater from COVID-hospitals, and in non-COVID-hospitals, the median SARS-CoV-2 concentration was 108 GEC/mL (range: 30-1829). Our results indicate that high concentrations of E. coli and SARS-CoV-2 were discharged through the hospital wastewa-ter (both COVID and non-COVID) without treatment into the ambient water bodies. Although there is no evidence for transmission of SARS-CoV-2 via wastewater, this study highlights the significant risk posed by wastewater from health care facilities in Dhaka for the many other diseases that are spread via faecal oral route. Hospitals in low-income settings could function as sentinel sites to monitor outbreaks through wastewater-based epidemiological surveillance systems. Hospitals should aim to adopt the appropriate wastewater treatment technologies to reduce the discharge of pathogens into the environment and mitigate environmental exposures.

  • 14.
    Amin, Nuhu
    et al.
    Icddr, Dhaka, Bangladesh..
    Haque, Rehnuma
    Icddr, Dhaka, Bangladesh..
    Rahman, Md. Ziaur
    Icddr, Dhaka, Bangladesh..
    Rahman, Mohammed Ziaur
    Icddr, Dhaka, Bangladesh..
    Mahmud, Zahid Hayat
    Icddr, Dhaka, Bangladesh..
    Hasan, Rezaul
    Icddr, Dhaka, Bangladesh..
    Sarker, Supriya
    Directorate Gen Hlth Serv DGHS, Dhaka, Bangladesh..
    Akter, Nargis
    UNICEF, Dhaka, Bangladesh..
    Johnston, Dara
    UNICEF, Dhaka, Bangladesh..
    Rahman, Mahbubur
    Icddr, Dhaka, Bangladesh..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Hospitals In Dhaka And Discharge Of Wastewater With High Sars-Cov-2 Viral Rna Genetic Loadings: An Assessment Of Potential Environmental Health Risk2021Ingår i: American Journal of Tropical Medicine and Hygiene, ISSN 0002-9637, E-ISSN 1476-1645, Vol. 105, nr 5, s. 265-266Artikel i tidskrift (Övrigt vetenskapligt)
  • 15.
    Amiri, Vahab
    et al.
    Department of Geology, Faculty of Science, Yazd University, Yazd, Iran.
    Li, Peiyue
    School of Water and Environment, Chang’an University, No. 126 Yanta Road, Xi’an, 710054, China Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang’an University, No. 126 Yanta Road, Xi’an, 710054, China.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. KWR Water Cycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, The Netherlands.
    Nakhaei, Mohammad
    Department of Applied Geology, Faculty of Earth Science, Kharazmi University, Tehran, Iran.
    Mercury pollution in the coastal Urmia aquifer in northwestern Iran: potential sources, mobility, and toxicity2021Ingår i: Environmental Science and Pollution Research, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 28, nr 14, s. 17546-17562Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The concentration of total dissolved mercury (HgT) in surface and groundwater resources in the coastal parts of Urmia aquifer (NW of Iran) was investigated to identify the possible sources and sinks of mercury and the geochemical mechanisms controlling its mobilization. The distribution of water samples on the Piper diagram demonstrates that most samples have the Ca-Mg-HCO3 facies. From 62 water samples collected in this area, one sample contained HgT concentrations exceeding the maximum contaminant level recommended by the WHO (6 μg/L). The principal component analysis (PCA) produced five principal components. The positive moderate correlation of HgT with EC, Cl, K, Mg, and Na indicated that the weathering of geological formations was one of the main sources of mercury in groundwater samples. Position of water samples in Eh-pH regions where microorganisms involved in mercury methylation and mineralization were potentially active demonstrated that the aquifer had undergone sulfate reduction and had reached the final stage of the terminal electron accepting process (TEAP) sequence in the methane production processes which are limited to only 37% of the water samples that have anaerobic conditions. Some Hg-bearing species are in nonequilibrium geochemical conditions. The supersaturation of water samples with magnetite and goethite indicated that these Fe-bearing minerals could act as the strong reducing agents for the reduction of Hg(II) to Hg(0).

  • 16.
    Anamaghi, Sara
    et al.
    Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran.
    Behboudian, Massoud
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
    Mahjouri, Najmeh
    Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran.
    Kerachian, Reza
    School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
    A resilience-based framework for evaluating the carrying capacity of water and environmental resources under the climate change2023Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 902, artikel-id 165986Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper proposes a new framework for evaluating water and environmental resources carrying capacity (WERCC) based on the concept of resilience under uncertainty. First, several quantitative and qualitative criteria based on the seven principles of resilience and the Pressure-Support-State (PSS) framework are defined to incorporate the positive and negative impacts of human interventions and natural factors on water resources and the environment. The resilience principles include redundancy and diversity, managing connectivity, managing slow variables and their feedbacks, fostering complex adaptive system (CAS) thinking, encouraging learning, broadening participation, and promoting polycentric governance. After evaluating the values of the criteria and sub-criteria using a two-point evidential reasoning (TPER) approach and considering the existing uncertainties, the monthly time series of WERCC with uncertainty bands are calculated. The proposed methodology is then used to evaluate the WERCC in the Zarrinehrud river basin in Iran for a given historical period (1991–2012), and the period of 2020 to 2049 under different climate change scenarios. The results of this analysis demonstrate the inadequacy of the WERCC during the historical period and indicate that the continuation of the existing trend (base scenario, MSC0) will cause many environmental issues. Hence, several water and environmental resources management (WERM) scenarios are proposed to enhance the WERCC. These scenarios are evaluated using a multi-agent-multi-criteria decision-making method to identify the preferable WERM scenario (MSC12356). This scenario, which encompasses various projects (e.g., development and enhancement of water transfer networks and upgrading cultivation methods), improves the average value of the WERCC by 26 %. The results of the proposed methodology are compared with those of a traditional decision-making method, which considers three criteria of average WERCC, the pressure-support index, and the implementation cost. The results demonstrate that the multi-agent-multi-criteria decision-making approach provides a more cost-effective management scenario, with 30 % less cost, leading to only 3 % less carrying capacity.

  • 17. Andersson, E.
    et al.
    Boonstra, W. J.
    de la Torre Castro, M.
    Hughes, A. C.
    Ilstedt, U.
    Jernelöv, A.
    Jonsson, B. -G
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Department of Physical Geography and Bolin Centre for Climate Research, Stockholm University, 106 91, Stockholm, Sweden.
    Keskitalo, C.
    Kritzberg, E.
    Kätterer, T.
    McNeely, J. A.
    Mohr, C.
    Mustonen, T.
    Ostwald, M.
    Reyes-Garcia, V.
    Rusch, G. M.
    Sanderson Bellamy, A.
    Stage, J.
    Tedengren, M.
    Thomas, D. N.
    Wulff, A.
    Söderström, B.
    Ambio fit for the 2020s2022Ingår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 51, nr 5, s. 1091-1093Artikel i tidskrift (Refereegranskat)
  • 18.
    Ardakani, Amir Hossien Hatefi
    et al.
    Univ Semnan, Coll Nat Resources & Desert, Dept Management Arid & Desert Reg, Semnan, Iran..
    Shojaei, Saeed
    Univ Tehran, Fac Nat Resources, Dept Arid & Mt Reg Reclamat, Tehran, Iran..
    Shahvaran, Ali Reza
    Iran Univ Sci & Technol, Sch Civil Engn, Tehran, Iran..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden..
    Cerda, Artemi
    Univ Valencia, Dept Geog, Soil Eros & Degradat Res Grp, Blasco Ibanez 28, Valencia 46010, Spain..
    Tiefenbacher, John
    Texas State Univ, Dept Geog, San Marcos, TX USA..
    Selecting potential locations for groundwater recharge by means of remote sensing and GIS and weighting based on Boolean logic and analytic hierarchy process2022Ingår i: Environmental Earth Sciences, ISSN 1866-6280, E-ISSN 1866-6299, Vol. 81, nr 1, artikel-id 8Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Growing demand for water, as a consequence of population growth, farmland irrigation, and industrial expansion, results in groundwater resources exploitation. This, in combination with droughts induced by climate change, has caused a sharp drop in groundwater levels throughout arid and semiarid countries. In Iran, all these factors are resulting in alarming water scarcity. Appropriate management and control of existing water resources can overcome water shortages, with healthy and sustainable management of groundwater as one of the most efficient tools. Artificial recharge of aquifers can be used to replenish water supplies and restore the water resources in Iran and other semiarid and arid countries, but selection of the right location for runoff collection is essential to achieve success. Precipitation, slope, geology, lineament density, drainage density, aquifer water quality, groundwater level, vegetation, and land use were selected in this study as key factors in locating suitable sites for artificial recharge. The weight of each, in terms of importance and impact on aquifer recharge, was determined using remote sensing techniques to prepare layers and analytic hierarchy process (AHP) and Boolean logic to identify the optimal weight for each factor. Geographic information system (GIS) was used for modeling, applying the weight of each criterion, and producing a final map. The results showed better performance of AHP than Boolean logic. For artificial recharge, 9.9% of the total study area (Mahdishahr in northern Iran) was found to be in a very good position and 22.6% in a good position. On filtering the privacy layer of fountains and aqueducts, the very good and good area declined to 8.4% and 14.7% of the total area, respectively, and mainly comprised alluvial valleys and coarse alluvial sediments with low slope and drainage density.

  • 19.
    Aullón Alcaine, Anna
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Schulz, Carlos
    Univ Nacl La Pampa UNLPam, Fac Ciencias Exactas & Nat, Av Uruguay 151,L6300, Santa Rosa, La Pampa, Argentina..
    Bundschuh, Jochen
    Univ Southern Queensland, UNESCO Chair Groundwater Arsen Agenda Sustainable, West St, Toowoomba, Qld 4350, Australia.;Univ Southern Queensland, Fac Hlth Engn & Sci, West St, Toowoomba, Qld 4350, Australia..
    Jacks, Gunnar
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Thunvik, Roger
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Gustafsson, Jon Petter
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Mörth, Carl-Magnus
    Stockholm Univ, Dept Geol & Geochem, Stockholm, Sweden..
    Sracek, Ondra
    Palacky Univ, Fac Sci, Dept Geol, 17 Listopadu 12, Olomouc 777146, Czech Republic..
    Ahmad, Arslan
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Hydrogeochemical controls on the mobility of arsenic, fluoride and other geogenic co-contaminants in the shallow aquifers of northeastern La Pampa Province in Argentina2020Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 715, artikel-id 136671Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Elevated Arsenic (As) and Fluoride (F) concentrations in groundwater have been studied in the shallow aquifers of northeastern of La Pampa province, in the Chaco-Pampean plain, Argentina. The source of As and co-contaminants is mainly geogenic, from the weathering of volcanic ash and loess (rhyolitic glass) that erupted from the Andean volcanic range. In this study we have assessed the groundwater quality in two semi-arid areas of La Pampa. We have also identified the spatial distribution of As and co-contaminants in groundwater and determined the major factors controlling the mobilization of As in the shallow aquifers. The groundwater samples were circum-neutral to alkaline (7.4 to 92), oxidizing (Eh similar to 0.24 V) and characterized by high salinity (EC = 456-11,400 mu S/cm) and Na+-HCO3- water types in recharge areas. Carbonate concretions ("tosca") were abundant in the upper layers of the shallow aquifer. The concentration of total As (5.6 to 535 mu g/L) and F (0.5 to 14.2 mg/L) were heterogeneous and exceeded the recommended WHO Guidelines and the Argentine Standards for drinking water. The predominant As species were arsenate As(V) oxyanions, determined by thermodynamic calculations. Arsenic was positively correlated with bicarbonate (HCO3-), fluoride (F), boron (B) and vanadium (V), but negatively correlated with iron (Fe), aluminium (Al), and manganese (Mn), which were present in low concentrations. The highest amount of As in sediments was from the surface of the dry lake. The mechanisms for As mobilization are associated with multiple factors: geochemical reactions, hydrogeological characteristics of the local aquifer and climatic factors. Desorption of As(V) at high pH, and ion competition for adsorption sites are considered the principal mechanisms for As mobilization in the shallow aquifers. In addition, the long-term consumption of the groundwater could pose a threat for the health of the local community and low cost remediation techniques are required to improve the drinking water quality.

  • 20.
    Bakyayita, Grace Kizito
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Makerere University, Kyambogo University.
    Batch Sorption Studies of Aqueous Cadmium and Lead from Contaminated Water onto Selected Biosorbents2019Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [sv]

    Kadmium och bly är föroreningar som har skadliga hälsoeffekter på ekosystem genom endera kronisk exponering för låga halter eller akut exponering från höga halter. Även om metallerna fastläggs till jordpartiklar och organiskt material så att deras förekomst i markvatten är låg, så kan de frigöras och transporteras ned till grundvattnet om jordens mättnaskapacitet uppnås eller om pH sjunker. Halterna av spårmetaller beror av naturliga källor t ex bakgrundshalter, vittring och vulkanisk aktivitet såväl som antropogena källor. Men även om naturliga källor kan bidra till förhöjda halter så är det vanligen de atropogena källor som dominerar. Ytvatten, dagvatten, lakvatten från deponier och ytligt grundvatten provtogs i Lake Victorias avrinningsområde i Uganda. Resultaten från analyser visade att grundvattnet från utvalda skyddade källor hade förhöjda halter av spårmetaller speciellt Pb2+ och anjonerna NO3-, Cl- och katjonerna Fe, Mn och K. Dagvattnet från de skyddade källornas avrinningsområde var framför allt förorenat med Pb2+. Ytvattnet från de utvalda vattendragen hade pH>7 och var förorenade med järn och mangan. Lakvattnet från en deponi innehöll höga halter av arsenik och i Lubigi channel hade höga halter av föroreningar från skrotansamlingar och bilverkstäder. Föroreningshalterna i ytvatten var relaterad till förändrade demografiska fördelningar och antropogena aktiviteter kopplade till urbanisering och industrialisering i avrinningsområdet. För att bestämma fördelning av metalljonerna i oorganisk och organisk fas i vattnet användes jämviktsmodellen Visual MINTEQ 3.1. Riskbedömningen av exponering från utvalda spårmetaller genomfördes med de Svenska bedömningsgrunderna för ytvatten och med ett Bio-met software verktyg. För utvärdering av föroreningshalterna i grundvatten användes WHO och Ugandas riktvärden.Flera konventionella reningsmetoder för att åtgärda toxiska spårmetaller i olika typer av vatten så att tillåtna koncentrationer uppnås är tillgängliga. Tyvärr så har metoderna höga installations- och drifts kostnader samt att de producerar giftiga slam avfall som måste omhändertas och inte alltid fungerar effektivt för att fastlägga spårmetaller. Då sorptionsstudier har visat att olika biomassor är effektiva för att rena vatten från spårmetaller i låga koncentrationer har de därför blivit intressanta alternativ. De biomassor som ingick i studien var avfall från odlingar av Albizia coriaria, Erythrina abyssinica, Coffea canephora, Cyperus papyrus och Musa spp.De valdes studien valdes ut eftersom stora kvantiteter finns tillgängliga och det saknas andra användningsområden. Experiment utfördes på biomassorna för att karakterisera de strukturella komponenter som bidrar till bindningen av metall joner, konkurrerande katjoner, katjonbyteskapaciteten, materialens effektivitet och verkningsgrad för fastläggning av utvalda spårmetaller. Biomaterialen behandlades med natriumhydroxid och väteperoxid och fastläggningen före och efter behandlingen jämfördes. För bestämning av de vattenlösliga oorganiska komponenterna i lakvatten användes ICP-MS och de fasta strukturella beståndsdelarna analyserades med XRD. Med jämvikts- och kinetiska skakförsök utvärderas biomassorna förmåga att fastlägga kadmium och bly i förorenat vatten. Lakvattnet från skakförsöken analyserades för DOC och spårmetaller och data från experimenten anpassades till kinetiska modeller och isotermer. Resultaten visade att behandlingen med natriumhydroxid ökade fastläggningen till biomassorna i högre grad än väteperoxidbehandlingen. En Pseudo-second-order kinetisk modell och Langmuir isoterm hade god anpassning till data från experimenten med enskilda metaller, medan Freundlich isotherm passade bättre när fler joner konkurrerade om sorptions ytorna. Den underliggande mekanismen är troligen chemisorption som förekommer i ett monolager men som har heterogena ytegenskaper. Experiment med lösningar som innehöll både bly och kadmium visade att blyupptaget överskred upptaget av kadmium vilket indikerar att affiniteten är högre för bly än för kadmium. Även om det fortfarande finns osäkerheter så visar resultaten från studien att de undersökta biomassorna är lovande åtgärdsmaterial för att fastlägga Cd och Pb i förorenat naturligt vatten.

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  • 21.
    Behboudian, Massoud
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Anamaghi, Sara
    Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran.
    Kerachian, Reza
    School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Comparison of three group decision-making frameworks for evaluating resilience time series of water resources systems under uncertainty2024Ingår i: Ecological Indicators, ISSN 1470-160X, E-ISSN 1872-7034, Vol. 158, artikel-id 111269Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study compared three uncertainty-based decision-making frameworks (considering/not considering the hierarchical structure of stakeholders) using resilience-based indices for evaluating different water resources management (WRM) scenarios under the impacts of climate change. The first step involved identifying significant stakeholders in the study area and establishing their relative weights. In the next step, stakeholders were asked to evaluate the management scenarios in the three different decision-making frameworks based on their decision criteria (nine resilience-based indices, implementation cost, and employment). Different types of weights (explicit and interval) were assigned to each stakeholder and their decision criteria, to account for the uncertainty associated with estimating their respective weights. This methodology was applied to the case of the Zarrinehrud River basin in northwest Iran. The best management scenario identified (MSC1346) was able increase lake elevation by 2.6 m (from 1271.3 m to 1273.9 m), improve the resilience of the system by 25 %, and enhance provisioning ecosystem services such as water and food supply and regulating services such as air quality. Comparing the results of the three decision-making frameworks revealed that the two which considered the hierarchical structure of stakeholders were more effective in determining the best scenario. The best scenario selected in the framework that ignored the hierarchical structure of stakeholders (MSC13567) had USD 202 million higher overall implementation and construction costs and gave a negligible difference in resilience value (0.04 difference) compared with scenario MSC1346.

  • 22.
    Behboudian, Massoud
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
    Kerachian, Reza
    School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran.
    Motlaghzadeh, Kasra
    Department of System Design Engineering, University of Waterloo, Waterloo, Canada.
    Ashrafi, Saeed
    Department of Engineering System and Environment, University of Virginia, Charlottesville, VA, USA.
    Application of multi-agent decision-making methods in hydrological ecosystem services management2023Ingår i: MethodsX, ISSN 1258-780X, E-ISSN 2215-0161, Vol. 10, artikel-id 102130Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this paper, a methodology is presented for managing hydrological ecosystem services by taking into account the hierarchy of stakeholders involved in the decision-making process. With this in mind, a water allocation model is first used for allocating water resources to demands. Then, several ecosystem services (ESs)-based criteria are defined to evaluate hydrological ESs of water resources management policies. A set of water and environmental resources management strategies (alternatives) are defined for decision-makers, and several drought management strategies are determined to decrease the area of key crops and water demands of agricultural nodes. To model a multi-agent multi-criteria decision-making problem for managing hydrological ESs, three main steps are considered as follows: • Different ES-based criteria (i.e., economic profit, NPP,1 and ecological index) are defined, and their grade-based values are estimated. • Several strategies are defined for stakeholders at different levels. • A recursive evidential reasoning (ER) approach, which considers a hierarchical structure for decision-makers and a leader-follower game, is used to select the best strategy for each decision-maker.The applicability and efficiency of the methodology are illustrated by applying it to a real-world case study. The methodology is general and can be easily applied to other study areas.

  • 23. Bennich, T.
    et al.
    Belyazid, S.
    Stjernquist, I.
    Diemer, A.
    Seifollahi-Aghmiuni, S.
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Department of Physical Geography, Stockholm University, SE-106 91, Stockholm, Sweden.
    The bio-based economy, 2030 Agenda, and strong sustainability – A regional-scale assessment of sustainability goal interactions2021Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 283, artikel-id 125174Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Policy-makers face the challenge of assessing and implementing sustainability measures, while also dealing with parallel and sometimes conflicting policy agendas, long-term policy impacts, and contested interpretations of sustainability. To support evidence-based decision-making in this context, this paper presents the results from an integrated assessment of sustainability goal interactions. Links between the bio-based economy, the 2030 Agenda, and the so-called strong sustainability paradigm were explored in a regional-scale case. The analysis focused primarily on developments in the forestry and energy sectors. Direct trade-offs and synergies as well as broader systemic impacts were identified. The results show how goals from the bio-based economy, 2030 Agenda and strong sustainability paradigm are mutually interacting. Positive interactions were found within two clusters of goals, offering coherent and synergetic transition pathways within these. The first cluster encompasses developments toward intensified forestry, renewable energy, and closed-loop production systems. The second pathway supports diversified forestry and protection of critical natural capital. However, while internally coherent, trade-offs were identified between these goal clusters, demonstrating the difficulty in simultaneously making progress on goals belonging to different sustainability agendas. The results also stress the need for disaggregation and long-term assessments to identify trade-offs and synergies. Finally, the analysis highlights the theoretical potential but practical challenges of implementing the bio-based economy and 2030 Agenda in a way that adheres to strong sustainability. The analytical framework used in the present study may be adapted and applied to other decision-making contexts. It is particularly useful in settings characterized by uncertainty and unstructured problem spaces.

  • 24.
    Bhatnagar, Shailesh
    et al.
    Cent Groundwater Board, Jammu, North West Hima, India..
    Taloor, Ajay Kumar
    Univ Jammu, Dept Remote Sensing & GIS, Jammu 180006, India..
    Roy, Sagarika
    Indian Inst Sci, Dept Civil Engn, Bangalore, Karnataka, India..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Delineation of aquifers favorable for groundwater development using Schlumberger configuration resistivity survey techniques in Rajouri district of Jammu and Kashmir, India2022Ingår i: GROUNDWATER FOR SUSTAINABLE DEVELOPMENT, ISSN 2352-801X, Vol. 17, artikel-id 100764Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The primary goal of this research is to demarcate aquifers favorable for groundwater development in the border district of Rajouri, in the Union Territory of Jammu, and Kashmir, in order to secure a long-term water supply. The Schlumberger configuration resistivity survey technique Vertical Electrical Sounding (VES) is used to investigate the characteristics of the subsurface layer and the potential of groundwater by using 30 VES sites in order to establish the optimum sites for digging a successful borehole for the qualitative and quantitative in-terpretations in the study area. It is determined that real resistivity values of subsurface geoelectric layers less than 35 Ohm m indicate the existence of finer sediments, whilst moderate resistivity values ranging from 35 to 100 Ohm m suggest the presence of coarser sediments favorable for groundwater development. The resistivity value between 100 and 200 Ohm m indicates weathered formation, 200-400 Ohm m, indicates fractured rock and more than 400 Ohm m represents hard formation which is devoid of any kind of groundwater development. The bedrock resistivity, nature of the curve, and overburden thickness are the parameters utilized to choose a good site for drilling tests. Based on the criteria, it was determined that nine VES sites (VES-2, VES-3, VES-4, VES -6, VES-17, VES-18, VES-19, VES-28, and VES-30) are appropriate for the installation of a tube well for irrigation and domestic purposes. The 8 sites (VES-14, VES-15, VES-20, VES-21, VES-22, VES-23, VES-24, and VES-27) were not suitable because of compact formation and harder rocks whereas the 13 VES sites (VES-1, VES-5, VES-7, VES-8, VES-9, VES-10, VES-11, VES-12, VES-13, VES-16, VES-25, VES-26, VES-29) are partially suitable for groundwater development and only suitable for personal uses such as hand pump of shallow depth.

  • 25.
    Bhattacharya, Manojit
    et al.
    Fakir Mohan Univ, Dept Zool, Balasore 756020, Odisha, India..
    Pal, Soumen
    Vellore Inst Technol, Sch Mech Engn, Vellore 632014, Tamil Nadu, India..
    Chatterjee, Srijan
    Hallym Univ, Chuncheon Sacred Heart Hosp, Inst Skeletal Aging & Orthoped Surg, Chunchon 24252, Gangwon Do, South Korea..
    Alshammari, Abdulrahman
    King Saud Univ, Coll Pharm, Dept Pharmacol & Toxicol, POB 2455, Riyadh 11451, Saudi Arabia..
    Albekairi, Thamer H.
    King Saud Univ, Coll Pharm, Dept Pharmacol & Toxicol, POB 2455, Riyadh 11451, Saudi Arabia..
    Jagga, Supriya
    Harvard Med Sch, Brigham & Womens Hosp, Div Endocrinol, 25 Shattuck St, Boston, MA 02115 USA..
    Ohimain, Elijah Ige
    Niger Delta Univ, Microbiol Dept, Amassoma, Bayelsa State, Nigeria..
    Zayed, Hatem
    Qatar Univ, Coll Hlth & Sci, Dept Biomed Sci, QU Hlth, Doha, Qatar..
    Byrareddy, Siddappa N.
    Univ Nebraska Med Ctr, Dept Pharmacol & Expt Neurosci, Omaha, NE 68198 USA..
    Lee, Sang-Soo
    Hallym Univ, Chuncheon Sacred Heart Hosp, Inst Skeletal Aging & Orthoped Surg, Chunchon 24252, Gangwon Do, South Korea..
    Wen, Zhi-Hong
    Natl Sun Yat Sen Univ, Dept Marine Biotechnol & Resources, Kaohsiung 80424, Taiwan..
    Agoramoorthy, Govindasamy
    Tajen Univ, Coll Pharm & Hlth Care, Pingtung 907, Taiwan..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Chakraborty, Chiranjib
    Adamas Univ, Sch Life Sci & Biotechnol, Dept Biotechnol, Kolkata 700126, W Bengal, India..
    ChatGPT's scorecard after the performance in a series of tests conducted at the multi-country level: A pattern of responses of generative artificial intelligence or large language models2024Ingår i: Current Research in Biotechnology, ISSN 2590-2628, Vol. 7, artikel-id 100194Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Recently, researchers have shown concern about the ChatGPT-derived answers. Here, we conducted a series of tests using ChatGPT by individual researcher at multi-country level to understand the pattern of its answer accuracy, reproducibility, answer length, plagiarism, and in-depth using two questionnaires (the first set with 15 MCQs and the second 15 KBQ). Among 15 MCQ-generated answers, 13 +/- 70 were correct (Median : 82.5; Coefficient variance : 4.85), 3 +/- 0.77 were incorrect (Median: 3, Coefficient variance: 25.81), and 1 to 10 were reproducible, and 11 to 15 were not. Among 15 KBQ, the length of each question (in words) is about 294.5 +/- 97.60 (mean range varies from 138.7 to 438.09), and the mean similarity index (in words) is about 29.53 +/- 11.40 (Coefficient variance: 38.62) for each question. The statistical models were also developed using analyzed parameters of answers. The study shows a pattern of ChatGPT-derive answers with correctness and incorrectness and urges for an error-free, next-generation LLM to avoid users' misguidance.

  • 26.
    Bhattacharya, Prosun
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Gustafsson, Jon Petter
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Swedish Univ Environm Sci, Dept Soil & Environm, Box 7014, S-75007 Uppsala, Sweden.
    Tribute to Gunnar Jacks (*April 13, 1937 dagger September 18, 2019)2019Ingår i: Environmental Earth Sciences, ISSN 1866-6280, E-ISSN 1866-6299, Vol. 78, nr 24, artikel-id 724Artikel i tidskrift (Övrigt vetenskapligt)
  • 27.
    Bhattacharya, Prosun
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. KWR Watercycle Research Institute, Groningenhaven 7, 3433, PE, Nieuwegein, The Netherlands.
    Kumar, Manish
    Islam, Md Tahmidul
    Haque, Rehnuma
    Chakraborty, Sudip
    Ahmad, Arslan
    Niazi, Nabeel Khan
    Cetecioglu, Zeynep
    Nilsson, David
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Filosofi och historia, Historiska studier av teknik, vetenskap och miljö.
    Ijumalana, Julian
    van der Voorn, Tom
    Jakariya, Md
    Hossain, Maqsud
    Ahmed, Firoz
    Rahman, Mahbubur
    Akter, Nargis
    Johnston, Dara
    Ahmed, Kazi Matin
    Prevalence of SARS-CoV-2 in Communities Through Wastewater Surveillance—a Potential Approach for Estimation of Disease Burden2021Ingår i: Current Pollution Reports, ISSN 2198-6592, Vol. 7, nr 2, s. 160-166Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The episodic outbreak of COVID-19 due to SARS-CoV-2 is severely affecting the economy, and the global count of infected patients is increasing. The actual number of patients had been underestimated due to limited facilities for testing as well as asymptomatic nature of the expression of COVID-19 on individual basis. Tragically, for emerging economies with high population density, the situation has been more complex due to insufficient testing facilities for diagnosis of the disease. However, the recent reports about persistent shedding of viral RNA of SARS-CoV-2 in the human feces have created a possibility to track the prevalence and trends of the disease in communities, known as wastewater-based epidemiology (WBE). In this article, we highlight the current limitations and future prospects for WBE to manage pandemics.

  • 28.
    Bhattacharya, Prosun
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Mark- och vattenteknik, Miljögeokemi och ekoteknik. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Mukherjee, A. B.
    Management of arsenic contaminated groundwater in the Bengal Delta Plain2017Ingår i: Conflict Management of Water Resources, Informa UK Limited , 2017, s. 308-348Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    In the first half of the 13th century, St. Francis of Assisi (1182-1226) predicted the acute importance of water, which he defined as pretiosa (Cascetta, 1995). Unfortunately, the world has forgotten this caveat and in recent years, the importance of water resources is finally receiving greater attention in our daily lives. This is the result of rising demands, declining availability, as well as treatment costs incurred as the result of pollution from industrial and natural sources.

  • 29.
    Bhattacharya, Prosun
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Mukherjee, A.
    University of Texas at Austin, TX, USA and Albert Geological Survey, Edmonton, AB, Canada.
    Mukherjee, A. B.
    University of Helsinki, Helsinki, Finland.
    Arsenic in Groundwater of India2011Ingår i: Encyclopedia of Environmental Health, Elsevier Inc. , 2011, s. 150-164Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 30.
    Björk, Folke
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsteknik.
    Olofsson, Bo
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Sederholm, Bror
    Trägårdh, Jan
    RISE Cement- och betonginstitutet.
    Dränering av fukt i betong genom elektrokemisk metodik (elektroosmos) 2018Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    Syftet med detta projekt är att studera funktionen av elektroosmos som åtgärd mot fukt-problem i byggnader i Sverige samt att utifrån detta ge rekommendationer kring om och i så fall när det är lämpligt/olämpligt att använda metodiken under de varierande fuktighets-förhållanden som vanligtvis råder i Sverige.

    I projektet har vi gjort en litteraturstudie, en modellering av fysikaliska processer, studie-besök i byggnader med installationer för elektroosmos och mätningar av fukt i en källarvägg där en installation för elektroosmos blivit gjord.

    Vi ser metoden elektroosmos som en möjlighet för att hantera fuktproblem i grunder. Det behövs dock en del av utveckling både kring tekniken för metoden och kring vad som ska kunna förväntas av den.

    Det behövs bättre möjligheter att kunna förutsäga att metoden kommer att fungera i ett visst fall. Att inte kunna förutsäga detta bör vara ett bekymmer för dem som marknadsför metoden.

    Elektroosmos kräver höga fuktnivåer för att fungera. Torkning ned till under kritiska fuktnivåer kräver komplettering med andra torkmetoder. Det krävs en tydlighet kring hur detta ska lösas.

    Det behövs en bättre förståelse kring hur elektroderna ska placeras för bästa funktion.

    Fuktvandring i jorden kan ha stor betydelse för processen i praktiken. Det är idé att undersöka om detta kan användas för att utveckla metoden.

    Det behövs klara regler kring hur elinstallationen ska utformas på ett säkert sätt.

    Eftersom jontransporten i betongen är av ganska liten omfattning så tror vi inte att elektroosmos kommer att påverka, eller skada, betongens egenskaper på lång sikt.

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  • 31.
    Björk, Folke
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap.
    Sederholm, Bror
    RISE Res Inst Sweden, Gothenburg, Sweden..
    Tragardh, Jan
    RISE Res Inst Sweden, Gothenburg, Sweden..
    Olofsson, Bo
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Electroosmosis - a method applied for handling of moisture in foundations2020Ingår i: 12th Nordic symposium on building physics (NSB 2020) / [ed] Kurnitski, J Kalamees, T, EDP Sciences , 2020, artikel-id 17010Konferensbidrag (Refereegranskat)
    Abstract [en]

    Electroosmosis is an electrokinetic phenomena which is applied in some technical fields. It is also applied large scale for transport of moisture out of basements. We see the method of electroosmosis as an opportunity for solving moisture problems in basements. However, there is a need to develop both the technology for the method and the understanding about what to expect out of it. Better methods are needed to predict whether the method will work in a particular case.

  • 32.
    Björk, Mats
    et al.
    Department of Ecology, Environment and Plant Sciences, Stockholm University, 106 91, Stockholm, Sweden.
    Rosenqvist, Gunilla
    Blue Centre Gotland, Uppsala University-Campus Gotland, 621 67, Visby, Sweden.
    Gröndahl, Fredrik
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Bonaglia, Stefano
    Department of Marine Sciences, University of Gothenburg, Box 461, 405 30, Gothenburg, Sweden, Box 461.
    Methane emissions from macrophyte beach wrack on Baltic seashores2023Ingår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 52, nr 1, s. 171-181Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Beach wrack of marine macrophytes is a natural component of many beaches. To test if such wrack emits the potent greenhouse gas methane, field measurements were made at different seasons on beach wrack depositions of different ages, exposure, and distance from the water. Methane emissions varied greatly, from 0 to 176 mg CH4-C m−2 day−1, with a clear positive correlation between emission and temperature. Dry wrack had lower emissions than wet. Using temperature data from 2016 to 2020, seasonal changes in fluxes were calculated for a natural wrack accumulation area. Such calculated average emissions were close to zero during winter, but peaked in summer, with very high emissions when daily temperatures exceeded 20 °C. We conclude that waterlogged beach wrack significantly contributes to greenhouse gas emissions and that emissions might drastically increase with increasing global temperatures. When beach wrack is collected into heaps away from the water, the emissions are however close to zero.

  • 33. Blum, K. M.
    et al.
    Gallampois, C.
    Andersson, P. L.
    Renman, Gunno
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Renman, Agnieszka
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Haglund, P.
    Comprehensive assessment of organic contaminant removal from on-site sewage treatment facility effluent by char-fortified filter beds2019Ingår i: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 361, s. 111-122Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To remove organic contaminants from wastewater using cost-efficient and currently existing methods, our study investigated char-fortified filter beds for on-site sewage treatment facilities (OSSFs) in a long-term field setting. OSSFs are commonly used in rural and semi-urban areas worldwide to treat wastewater when municipal wastewater treatment is not economically feasible. First, we screened for organic contaminants with gas chromatography and liquid chromatography mass spectrometry-based targeted and untargeted analysis and then we developed quantitative structure-property relationship models to search for key molecular features responsible for the removal of organic contaminants. We identified 74 compounds (24 confirmed by reference standards) including plasticizers, UV stabilizers, fragrances, pesticides, surfactant and polymer impurities, pharmaceuticals and their metabolites, and many biogenic compounds. Sand filters that are used as a secondary step after the septic tank in OSSFs could remove hydrophobic contaminants. The addition of biochar significantly increased the removal of these and a few hydrophilic compounds (Wilcoxon signed-rank test, α = 0.05). Besides hydrophobicity-driven sorption, biodegradation was suggested to be the most important removal pathway in this long-term field application. However, further improvements are necessary to remove very hydrophilic contaminants as they were not removed with sand and biochar-fortified sand.

  • 34.
    Boulet, Anne Karine
    et al.
    Polytech Inst Coimbra, Coimbra Agr Sch, CERNAS, P-3045601 Coimbra, Portugal..
    Alarcao, Carlos
    Reg Directorate Agr & Fisheries Cent Reg DRAPC, Baixo Mondego Expt Ctr, P-3020201 Coimbra, Portugal..
    Ferreira, Carla
    Polytech Inst Coimbra, Coimbra Agr Sch, CERNAS, P-3045601 Coimbra, Portugal.;Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, S-10691 Stockholm, Sweden.;Navarino Environm Observ, Messinia 24001, Greece..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, S-10691 Stockholm, Sweden.;Navarino Environm Observ, Messinia 24001, Greece..
    Veiga, Adelcia
    Polytech Inst Coimbra, Coimbra Agr Sch, CERNAS, P-3045601 Coimbra, Portugal..
    Campos, Lara
    Polytech Inst Coimbra, Coimbra Agr Sch, CERNAS, P-3045601 Coimbra, Portugal..
    Ferreira, Antonio
    Polytech Inst Coimbra, Coimbra Agr Sch, CERNAS, P-3045601 Coimbra, Portugal..
    Hessel, Rudi
    Wageningen Environm Res, Subdiv Soil Water & Land Use, POB 47, NL-6700 AA Wageningen, Netherlands..
    Agro-ecological services delivered by legume cover crops grown in succession with grain corn crops in the Mediterranean region2021Ingår i: OPEN AGRICULTURE, ISSN 2391-9531, Vol. 6, nr 1, s. 609-626Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Grain corn is the main cereal produced in Portugal. It is grown in intensive monoculture cropping systems that may have negative effects on soil quality, affecting long-term fertility and productivity, and, therefore, the sustainability of the production. A promising management practice to mitigate soil degradation is to grow winter cover crops used as green manure. This study examined the effectiveness of six legume cover crops (LCCs) species in providing agro-ecological services for grain corn systems in the Mediterranean region, specifically in terms of nutrient leaching, nutrient recycling, weed control, and soil fertility. The study was performed in Central Portugal during 2 years, and it assessed legumes/weeds dry biomass yield, their nutrients content, and soil organic matter evolution. Results show that, in general, LCC are well adapted to Mediterranean conditions, yielding large amounts of biomass (up to 8 ton/ha for some clover species). In terms of nutrient leaching mitigation, the overall N-P-K nutrient uptake was 176-20-172 kg/ha. Green manure services enabled a reduction of 35% of N, 50% of P, and 100% of mineral fertilizers for a grain corn production of 12 ton/ha. Weed control by LCC was effective only in the second year of the study and for three clover species (crimson, balansa, and arrowleaf) due to their early establishment and/or high biomass production competing with weeds. Soil fertility was not improved in the short term, LCC incorporation into the soil to a slight depletion of the soil organic matter content.

  • 35.
    Boulet, Anne-Karine
    et al.
    CERNAS, Coimbra Agr Tech Sch, PC-304560 Coimbra, Portugal.;Univ Aveiro, CESAM Environm & Planning Dept, Campus Univ Santiago, PC-381019 Aveiro, Portugal..
    Rial-Rivas, Mitas E.
    Univ Aveiro, CESAM Environm & Planning Dept, Campus Univ Santiago, PC-381019 Aveiro, Portugal..
    Ferreira, Carla
    CERNAS, Coimbra Agr Tech Sch, PC-304560 Coimbra, Portugal.;Stockholm Univ, Dept Phys Geog, SE-10691 Stockholm, Sweden.;Bolin Ctr Climate Res, SE-10691 Stockholm, Sweden.;Navarino Environm Observ, Messinia 24001, Greece..
    Coelho, Celeste O. A.
    Univ Aveiro, CESAM Environm & Planning Dept, Campus Univ Santiago, PC-381019 Aveiro, Portugal..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Dept Phys Geog, SE-10691 Stockholm, Sweden.;Bolin Ctr Climate Res, SE-10691 Stockholm, Sweden.;Navarino Environm Observ, Messinia 24001, Greece.;KTH Royal Inst Technol, Dept Sustainable Dev Environm Sci & Engn SEED, SE-10044 Stockholm, Sweden..
    Keizer, Jan Jacob
    Univ Aveiro, CESAM Environm & Planning Dept, Campus Univ Santiago, PC-381019 Aveiro, Portugal..
    Ferreira, Antonio J. D.
    CERNAS, Coimbra Agr Tech Sch, PC-304560 Coimbra, Portugal..
    Hydrological Processes in Eucalypt and Pine Forested Headwater Catchments within Mediterranean Region2021Ingår i: Water, E-ISSN 2073-4441, Vol. 13, nr 10, artikel-id 1418Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Mediterranean headwater catchments have experienced major land-use changes in recent centuries, namely characterized by afforestation with fast-growing tree species (e.g., pine and eucalyptus). This paper investigates differences in the hydrological response of two forested catchments with distinct Pinus pinaster Aiton (PIN) and Eucalyptus globulus Labill. (EUC) covers over 6 hydrological years, from 2010 to 2016. The study was developed in paired catchments located in North-Central Portugal, under wet Mediterranean climate and schist bedrock. Based on rainfall and streamflow measurements, the hydrological responses were analyzed through the water-balance calculations, rainfall-runoff event analyses, and correlations between rainfall characteristics, evapotranspiration, soil moisture, overland flow, and land-cover parameters. The study period recorded a wide range of annual rainfall, between 984 and 2127 mm per years. The annual streamflow displayed greater inter-annual variation, from 208 to 1430 mm for PIN and from 217 to 1291 mm for EUC. The runoff coefficient was higher in the wettest years, with a maximum of 58% for PIN and 61% for EUC, and decreased substantially in the driest year, representing only 17% of the rainfall in PIN and 22% in EUC. Rainfall was predominant during the winter season (41%), followed by autumn (30%) and spring (24%). The streamflow displayed a seasonal behavior in both catchments, with higher runoff coefficient for EUC that for PIN. Half of the annual streamflow occurs during the winter, with the highest average runoff coefficient attained for EUC and PIN respectively being 68% and 64% of the rainfall amount. Annual evapotranspiration was relatively constant through the six years of study and showed higher average values in PIN (907 mm) than EUC (739 mm), highlighting the importance of forest type and showing that mature pine plantations lead to higher water consumption than eucalypt stands. Annual rainfall amount affects evapotranspiration rate (%), the percentage of ET increasing from 37% to 78% for PIN and from 34% to 73% for EUC between the wettest and the driest years, which raises concerns regarding the impact of climate changes on water availability in the mountain areas of the Mediterranean region.

  • 36. Braun, S.
    et al.
    McLaren, T. I.
    Frossard, E.
    Tuyishime, J. R. M.
    Börjesson, G.
    Gustafsson, Jon Petter
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.
    Phosphorus desorption and isotope exchange kinetics in agricultural soils2020Ingår i: Soil use and management, ISSN 0266-0032, E-ISSN 1475-2743Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To improve phosphorus (P) fertilization and environmental assessments, a better understanding of release kinetics of solid-phase P to soil solution is needed. In this study, Fe (hydr)oxide-coated filter papers (Fh papers), isotopic exchange kinetics (IEK) and chemical extractions were used to assess the sizes of fast and slowly desorbing P pools in the soils of six long-term Swedish field experiments. The P desorption data from the Fh-paper extraction of soil (20 days of continual P removal) were fitted with the Lookman two-compartment desorption model, which estimates the pools of fast (Q1) and slowly (Q2) desorbing P, and their desorption rates k1 and k2. The amounts of isotope-exchangeable P (E) were calculated (E1min to E>3 months) and compared with Q1 and Q2. The strongest relationship was found between E1 min and Q1 (r2 =.87, p <.01). There was also an inverse relationship between the IEK parameter n (the rate of exchange) and k1 (r2 =.52, p <.01) and k2 (r2 =.52, p <.01), suggesting that a soil with a high value of n desorbs less P per time unit. The relationships between these results show that they deliver similar information, but both methods are hard to implement in routine analysis. However, Olsen-extractable P was similar in magnitude to Q1 (P-Olsen = 1.1 × Q1 + 2.3, r2 =.96), n and k1 were related to P-Olsen/P-CaCl2, while k2 was related to P-oxalate/P-Olsen. Therefore, these extractions can be used to estimate the sizes and desorption rates of the different P pools, which could be important for assessments of plant availability and leaching.

  • 37.
    Braun, Sabina
    et al.
    Swedish University of Agricultural Sciences, Department of Soil and Environment.
    Warrinnier, Ruben
    KU Leuven, Belgium.
    Börjesson, Gunnar
    Swedish University of Agricultural Sciences, Department of Soil and Environment.
    Ulén, Barbro
    Swedish University of Agricultural Sciences, Department of Soil and Environment.
    Smolders, Erik
    KU Leuven, Belgium.
    Gustafsson, Jon Petter
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Assessing the ability of soil tests to estimate labile phosphorus in agricultural soils: Evidence from isotopic exchange2019Ingår i: Geoderma, ISSN 0016-7061, E-ISSN 1872-6259, Vol. 337, s. 350-358Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Efficient phosphorus (P) fertilization strategies are essential for intensive crop production with minimal negative environmental impacts. A key factor in sustainable P use is assessment of the plant available soil P pool using soil P tests. This study determined isotopically exchangeable P after six days of reaction with 33PO4 (P-E (6 d)) to determine how accurately two commonly used P tests, Olsen and AL (acid ammonium acetate lactate) can quantify the amount of labile P. Soil samples were taken from both highly P-amended and unamended plots at six sites within the Swedish long-term soil fertility experiments. According to P K-edge XANES spectroscopy, the P speciation was dominated by Al-bound P and organic P, with additional contributions from Fe-bound P and Ca phosphates in most soils. The results showed that the AL test overestimated P-E (6 d) by a factor of 1.70 on average. In contrast, the Olsen test underestimated P-E (6 d), with the mean ratios of P-Olsen to P-E (6 d) being 0.52 for high-P and 0.19 for low-P soils. The 33P/31P ratio in the Olsen extract of a 33PO4 spiked soil was closer to that of a 0.005 mol L−1 CaCl2 soil extract than the corresponding ratio in the AL extract, suggesting that AL extraction solubilized more non-labile P. In conclusion, the AL and Olsen methods are not suitable for direct quantification of the isotopically exchangeable soil P pool after 6 days of equilibration. However, based on the results, Olsen may be superior to AL for classification of soil P status, due to its even performance for calcareous and non-calcareous soils and lower extraction of non-labile P.

  • 38. Bundschuh, Jochen
    et al.
    Maity, Jyoti Prakash
    Mushtaq, Shahbaz
    Vithanage, Meththika
    Seneweera, Saman
    Schneider, Jerusa
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Khan, Nasreen Islam
    Hamawand, Ihsan
    Guilherme, Luiz R. G.
    Reardon-Smith, Kathryn
    Parvez, Faruque
    Morales-Simfors, Nury
    Ghaze, Sara
    Pudmenzky, Christa
    Kouadio, Louis
    Chen, Chien-Yen
    Medical geology in the framework of the sustainable development goals2017Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 581, s. 87-104Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Exposure to geogenic contaminants (GCs) such as metal(loid)s, radioactive metals and isotopes as well as transuraniums occurring naturally in geogenic sources (rocks, minerals) can negatively impact on environmental and human health. The GCs are released into the environment by natural biogeochemical processes within the near-surface environments and/or by anthropogenic activities such as mining and hydrocarbon exploitation as well as exploitation of geothermal resources. They can contaminate soil, water, air and biota and subsequently enter the food chain with often serious health impacts which are mostly underestimated and poorly recognized. Global population explosion and economic growth and the associated increase in demand for water, energy, food, and mineral resources result in accelerated release of GCs globally. The emerging science of "medical geology" assesses the complex relationships between geo-environmental factors and their impacts on humans and environments and is related to the majority of the 17 Sustainable Development Goals in the 2030 Agenda of the United Nations for Sustainable Development. In this paper, we identify multiple lines of evidence for the role of GCs in the incidence of diseases with as yet unknown etiology (causation). Integrated medical geology promises a more holistic understanding of the occurrence, mobility, bioavailability, bio-accessibility, exposure and transfer mechanisms of GCs to the food-chain and humans, and the related ecotoxicological impacts and health effects. Scientific evidence based on this approach will support adaptive solutions for prevention, preparedness and response regarding human and environmental health impacts originating from exposure to GCs.

  • 39.
    Chakraborty, Chiranjib
    et al.
    Adamas Univ, Sch Life Sci & Biotechnol, Dept Biotechnol, Kolkata, W Bengal, India.;Adamas Univ, Sch Life Sci & Biotechnol, Dept Biotechnol, Kolkata 700126, W Bengal, India..
    Chatterjee, Srijan
    Hallym Univ, Chuncheon Sacred Heart Hosp, Inst Skeletal Aging & Orthopaed Surg, Chuncheon Si, Gangwon Do, South Korea..
    Bhattacharya, Manojit
    Fakir Mohan Univ, Dept Zool, Vyasa Vihar, Balasore, Odisha, India..
    Chopra, Hitesh
    Chitkara Univ, Chitkara Coll Pharm, Chandigarh, Punjab, India..
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Islam, Md. Aminul
    Noakhali Sci & Technol Univ, Dept Microbiol, COVID 19 Diagnost Lab, Noakhali, Bangladesh.;President Abdul Hamid Med Coll, Dept Microbiol, Adv Mol Lab, Karimganj, Kishoreganj, Bangladesh.;Noakhali Sci & Technol Univ, Dept Microbiol, COVID 19 Diagnost Lab, Noakhali 3814, Bangladesh..
    Dhama, Kuldeep
    Indian Vet Res Inst, Div Pathol, ICAR, Bareilly, Uttar Pradesh, India..
    The D614G mutation helps to increase the transmissibility and reduce the virulence of SARS-CoV-2 variants through natural selection2023Ingår i: International Journal of Surgery, ISSN 1743-9191, E-ISSN 1743-9159, Vol. 109, nr 2, s. 171-174Artikel i tidskrift (Refereegranskat)
  • 40.
    Chopin, Thierry
    et al.
    Seaweed and Integrated Multi-Trophic Aquaculture Research Laboratory, University of New Brunswick, 100 Tucker Park Street, Saint John, New Brunswick E2L 4L5, Canada, 100 Tucker Park Street; Chopin Coastal Health Solutions Inc., Quispamsis, New Brunswick E2E 1W4, Canada; Turquoise Revolution Inc., Quispamsis, New Brunswick E2E 1W4, Canada.
    Costa-Pierce, Barry A.
    Faculty of Biosciences & Aquaculture, Nord University, Postboks 1490, Bodoe 8049, Norway, Postboks 1490; Ecological Aquaculture, LLC, 8 Coastal Lane, Biddeford, ME 04005, USA, 8 Coastal Lane.
    Troell, Max
    The Beijer Institute, Royal Swedish Academy of Sciences, Box 5000, Lilla Frescativagen 4, 104 05 Stockholm, Sweden, Box 5000, Lilla Frescativägen 4; Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden.
    Hurd, Catriona L.
    Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Hobart, TAS 7004, Australia, 20 Castray Esplanade.
    Costello, Mark John
    Faculty of Biosciences & Aquaculture, Nord University, Postboks 1490, Bodoe 8049, Norway, Postboks 1490.
    Backman, Steven
    Turquoise Revolution Inc., Quispamsis, New Brunswick E2E 1W4, Canada; Magellan Aqua Farms Inc., 130 King Street, St. Stephen, New Brunswick E3L 2C8, Canada, 130 King Street, St. Stephen.
    Buschmann, Alejandro H.
    Centro i-mar & CeBiB Nucleo Milenio MASH, Universidad de Los Lagos, Puerto Montt 1080000, Chile.
    Cuhel, Russell
    Great Lakes WATER Institute, University of Wisconsin-Milwaukee, 600 E. Greenfield Avenue, Milwaukee, WI 53204, USA, 600 E. Greenfield Avenue.
    Duarte, Carlos M.
    Red Sea Research Center and Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
    Gröndahl, Fredrik
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Heasman, Kevin
    Blue Technology Group, Cawthron Institute, 98 Halifax St., Nelson 7010, New Zealand, 98 Halifax St..
    Haroun, Ricardo J.
    Research Institute ECOAQUA, Scientific & Technological Marine Park, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214 Telde, Spain, Crta. Taliarte s/n.
    Johansen, Johan
    Norwegian Institute of Bioeconomy Research, Kudalsveien 6, Bodoe 8927, Norway, Kudalsveien 6.
    Jueterbock, Alexander
    Faculty of Biosciences & Aquaculture, Nord University, Postboks 1490, Bodoe 8049, Norway, Postboks 1490.
    Lench, Mitchell
    Ocean's Balance, 10 West Point Ln. #105, Biddeford, ME 04005, USA, 10 West Point Ln. #105.
    Lindell, Scott
    Applied Ocean Physics & Engineering, Woods Hole Oceanographic Institution, 266 Woods Hole Road, MS #24, Woods Hole, MA 02543, USA, 266 Woods Hole Road, MS #24.
    Pavia, Henrik
    Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Laboratorievagen 10, 452 96 Strömstad, Sweden, Strömstad.
    Ricart, Aurora M.
    Institut de Ciencies del Mar (ICM-CSIC), Passeig Maritim de la Barceloneta, 37-49, 08003 Barcelona, Spain, Passeig Marítim de la Barceloneta, 37-49; Bigelow Laboratory for Ocean Sciences, 60 Bigelow Dr., East Boothbay, ME 04544, USA, 60 Bigelow Dr..
    Sundell, Kristina S.
    Swedish Mariculture Research Centre (SWEMARC) and Department of Biological and Environmental Sciences, University of Gothenburg, P.O. Box 463, 405 30 Göteborg, Sweden, P.O. Box 463, Göteborg.
    Yarish, Charles
    Applied Ocean Physics & Engineering, Woods Hole Oceanographic Institution, 266 Woods Hole Road, MS #24, Woods Hole, MA 02543, USA, 266 Woods Hole Road, MS #24; Department of Ecology & Evolutionary Biology, University of Connecticut, 1 University Place, Stamford, CT 06901-2315, USA.
    Deep-ocean seaweed dumping for carbon sequestration: Questionable, risky, and not the best use of valuable biomass2024Ingår i: One Earth, ISSN 2590-3330, E-ISSN 2590-3322, Vol. 7, nr 3, s. 359-364Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Deep-ocean seaweed dumping is not an ecological, economical, or ethical answer to climate-change mitigation via carbon “sequestration.” Without sound science and sufficient knowledge on impacts to these fragile ecosystems, it distracts from more rational and effective blue-carbon interventions. We call for a moratorium on sinking seaweeds to deep-ocean ecosystems until its efficacy is established, and there is robust, evidence-based assessment of its environmental, economic, and societal sustainability.

  • 41.
    Chowdhury, Nilanjana Roy
    et al.
    School of Environmental Studies, Jadavpur University, Kolkata, 700032, India.
    Joardar, Madhurima
    School of Environmental Studies, Jadavpur University, Kolkata, 700032, India.
    Das, Antara
    School of Environmental Studies, Jadavpur University, Kolkata, 700032, India.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Roychowdhury, Tarit
    School of Environmental Studies, Jadavpur University, Kolkata, 700032, India.
    Current opinion on the role of post-harvesting and cooking on arsenic mobility in rice grain, its surmounting risk towards human and domestic livestock with sustained management2024Ingår i: Current Opinion in Environmental Science and Health, E-ISSN 2468-5844, Vol. 38, artikel-id 100535Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Arsenic (As) contamination in paddy and consequently the dietary system is an emerging global threat to human health. The harvesting, post-harvesting and cooking procedures of rice in Bengal delta further involves the use of As tainted groundwater which results in a concomitant increase of As levels in sunned, parboiled, and cooked grains, respectively. Inorganic arsenic (iAs) causing potential health risks is therefore high (appx. 90 %) due to the daily rice consumption. This study sheds light on higher As accumulation, distribution and assimilation during parboiling (24 %) and cooking processes (34 %) using As-tainted water, culminating additional As burden in cooked rice. Rice grain mediated health risk has displayed a concern level of 5 according to “Severity Adjusted Margin of Exposure” value. This study also takes heed of the domestic livestock exposed to As toxicity through contaminated fodder, resulting in contaminated animal by-products which initiates further longer lasting deleterious impacts on the society.

  • 42.
    Ciampa, Francesca
    et al.
    Univ Naples Federico II, Dept Architecture DiARC, I-80100 Naples, Italy..
    Seifollahi-Aghmiuni, Samaneh
    Stockholm Univ, Dept Phys Geog, S-11419 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-11419 Stockholm, Sweden.;Navarino Environm Observ, Costa Navarino, Navarino Dunes, Messinia 24001, Greece..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Dept Phys Geog, S-11419 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-11419 Stockholm, Sweden.;Navarino Environm Observ, Costa Navarino, Navarino Dunes, Messinia 24001, Greece..
    Ferreira, Carla Sofia Santos
    Stockholm Univ, Dept Phys Geog, S-11419 Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, S-11419 Stockholm, Sweden.;Navarino Environm Observ, Costa Navarino, Navarino Dunes, Messinia 24001, Greece.;Coimbra Agr Sch, Res Ctr Nat Resources, Polytech Inst Coimbra, Environm & Soc CERNAS, P-3045601 Coimbra, Portugal..
    Flood Mitigation in Mediterranean Coastal Regions: Problems, Solutions, and Stakeholder Involvement2021Ingår i: Sustainability, E-ISSN 2071-1050, Vol. 13, nr 18, artikel-id 10474Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Flooding affects Mediterranean coastal areas, with negative impacts on regional populations and ecosystems. This paper reviews the causes and consequences of coastal flooding in European Mediterranean countries, common and advanced solutions implemented to mitigate flood risk, and the importance of stakeholder involvement in developing these solutions. Climate change, intensive urbanization, tourism, deforestation, wildfires, and erosion are the main causes of coastal flooding, leading to social and economic losses, degradation of ecosystems, and water and soil contamination due to saltwater intrusion. Various measures for mitigating urban coastal flooding have been implemented, including coastal barriers, infrastructural drainage systems, wetlands, and mobile dams. Development and implementation of such solutions should be performed in close collaboration with stakeholders, but their current engagement at the coordination and/or decision-making level does not allow full integration of local knowledge in flood mitigation projects. Various processes are used to engage stakeholders in coastal flood mitigation, but participatory approaches are required to integrate their perspectives into performance analysis of potential solutions. Such approaches would allow a balance to be reached between nature conservation, market forces, stakeholder needs, and decision-makers' priorities, resulting in development of innovative and sustainable mitigation solutions to enhance urban resilience to coastal flooding.

  • 43.
    Cocciolo, Serena
    et al.
    Young Professional at the World Bank, Washington, DC, USA.
    Ghisolfi, Selene
    Laboratory for Effective Anti-poverty Policies, Bocconi University, Italy.
    Habib, Md. Ahasan
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. NGO Forum for Public Health, Dhaka, Bangladesh.
    Rashid, S M A
    NGO Forum for Public Health, Dhaka, Bangladesh.
    Tompsett, Anna
    Stockholm University, Stockholm, Sweden.
    Do Community Water Sources Provide Safe Drinking Water? Evidence from a Randomized Experiment in Rural Bangladesh2021Ingår i: The World Bank Economic Review, ISSN 0258-6770, Vol. 35, nr 4, s. 969-998Artikel i tidskrift (Refereegranskat)
    Ladda ner fulltext (pdf)
    fulltext
  • 44.
    Cocociolo, Serera
    et al.
    World Bank, Washington, DC, USA.
    Ghisolfi, Selene
    Bocconi University, Italy.
    Habib, Md. Ahasan
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. NGO Forum for Public Health, Bangladesh.
    Tompsett, Anna
    Institute for International Economic Studies, Stockholm University, Sweden.
    Time is not money: randomized experiment with community contribution requirements in cash and labourManuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    Development projects that set out to provide local public goods and services almost universally require communities to contribute collectively towards project costs. But despite the ubiquity of such requirements, we know little with certainty about their consequences, including whether consequences differ when communities contribute in cash or labour. Using a randomized experiment, we evaluate how requiring communities to contribute affects the impact of projects that aim to provide safe drinking water wells in rural Bangladesh. Cash contribution requirements strongly reduce take-up and impact relative to a contribution waiver. Labour contribution requirements with similar value if priced at the market wage do not, most likely because most households value their time below the market wage. These results suggest that in poor rural areas, where the monetary value of time is low, projects that require contributions may realize substantial welfare gains by replacing cash contribution requirements with labour contribution requirements. However, imposing any contribution requirement increases coordination and monitoring costs. After accounting for these costs,  requiring  communities to contribute decreases cost-effectiveness, undermining a central rationale for imposing such requirements.

  • 45. Cong, Cong
    et al.
    Pan, Haozhi
    Page, Jessica
    Barthel, Stephan
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Modeling place-based nature-based solutions to promote urban carbon neutrality2023Ingår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209Artikel i tidskrift (Refereegranskat)
    Abstract [sv]

    Nature-based solutions (NbS) are recognized as widely available and cost-effective mechanisms for sequestering carbon and offsetting carbon emissions. Realistic NbS implementations for carbon neutrality need to be effective at the global level and also appropriate for the socio-economic and physical conditions prevailing at the local level. This paper presents a framework that can help stakeholders identify demands, locations, and types of NbS interventions that could maximize NbS benefits at the local scale. Key processes in the framework include (1) interpolating carbon emissions data at larger spatial scales to high-resolution cells, using land use and socio-economic data; (2) assessing NbS effects on carbon reduction and their location-related suitability, through qualitative literature review, and (3) spatially allocating and coupling multiple NbS interventions to land use cells. The system was tested in Stockholm, Sweden. The findings show that the urban center should be allocated with combinations of improving access to green spaces and streetscapes, while the rural and suburban areas should prioritize preserving and utilizing natural areas. Our proposed method framework can help planners better select target locations for intended risk/hazard-mitigating interventions. 

    Ladda ner fulltext (pdf)
    fulltext
  • 46.
    Davids, Peter R.
    et al.
    TU Dortmund, Faculty of Spatial Planning, chair group of Land policy and Land Management, TU Dortmund, Faculty of Spatial Planning, Chair Group of Land Policy and Land Management.
    Hartmann, Thomas
    TU Dortmund, Faculty of Spatial Planning, chair group of Land policy and Land Management, TU Dortmund, Faculty of Spatial Planning, Chair Group of Land Policy and Land Management; J.E.P. University Usti nad Labem, Czech Republic.
    Ferreira, Carla S.S.
    Polytechnic Institute of Coimbra, Applied Research Institute, Rua da Misericordia, Lagar dos Corticos - S. Martinho do Bispo, 3045-093 Coimbra, Portugal, Rua da Misericórdia, Lagar dos Cortiços – S. Martinho do Bispo; Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Coimbra, Bencanta, 3045-601 Coimbra, Portugal, Bencanta.
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Pereira, Paulo
    Environmental Management Laboratory, Mykolas Romeris University, Vilnius, Lithuania.
    Multi-, inter-, and transdisciplinary approaches to nature-based flood risk management2024Ingår i: Current Opinion in Environmental Science and Health, E-ISSN 2468-5844, Vol. 38, artikel-id 100537Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Nature-based solutions (NBS) can act as a valuable complement to conventional ‘grey’ infrastructure for stormwater management (e.g. dams and dikes) in reducing flood risks as these ‘green’ solutions are perceived to be more flexible and multifunctional. However, to achieve effective NBS, a multi-actor approach in developing appropriate measures for specific sites is required as NBS occupy more space than ‘grey’ infrastructure and often overlap with private land. NBS also necessitate a multidisciplinary approach, to maximise environmental, social, and economic benefits. Thus, a transdisciplinary approach is needed for the effective implementation of NBS. Viewing NBS as a boundary concept, focusing on the common ground for different disciplines and actors, can facilitate communication and provide a first step towards effective flood risk mitigation.

  • 47.
    Ddiba, Daniel Isaac Waya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Hållbarhet, utvärdering och styrning. Stockholm Environment Institute (SEI).
    Andersson, Kim
    Stockholm Environment Institute (SEI).
    Rosemarin, Arno
    Stockholm Environment Institute (SEI).
    Schulte-Herbrüggen, Helfrid
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Ecoloop AB.
    Dickin, Sarah
    Stockholm Environment Institute (SEI).
    The circular economy potential of urban organic waste streams in low- and middle-income countries2021Ingår i: Environment, Development and Sustainability, ISSN 1387-585X, E-ISSN 1573-2975Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [en]

    There is growing recognition of the potential environmental and socio-economic benefits of applying a circular economy approach to urban organic waste management through resource recovery. Decisions around planning and implementing circular urban waste systems require estimates of the quantity of resources available in waste streams and their potential market value. However, most case-studies have so-far been conducted in high-income countries and cities in low- and middle-income countries have different challenges when developing a circular economy. The present paper explores these issues by estimating the potential for resource recovery from organic waste streams in the context of low- and middle-income countries, illustrated in Kampala, Uganda. A simplified material flow analysis approach is used to track the transformation of waste streams, namely; faecal sludge, sewage sludge and organic solid waste into the resource recovery products biogas, solid fuel, black soldier fly larvae and compost. Findings indicate that even at current rates of waste collection, the three waste streams combined could annually yield 135,000 tonnes of solid fuel or 39.6 million Nm3 of biogas or 15,000 tonnes of black soldier fly larvae or 108,000 tonnes of compost. Potential revenues from the products could range from 5.1 million USD for compost to 47 million USD for biogas, annually. This case study demonstrates how complex information describing urban waste in specific cities can be presented to facilitate decision-making and planning by stakeholders. By highlighting different resource recovery opportunities, application of this approach could provide an incentive for more sustainable urban sanitation and waste management systems.

    Ladda ner fulltext (pdf)
    full text - Ddiba et al 2021
  • 48.
    De Colle, Mattia
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processvetenskap.
    Jönsson, Pär
    KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.
    Karasev, Andrey
    KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Materialens processteknologi.
    Gauffin, Alicia
    KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
    Renman, Agnieszka
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    Renman, Gunno
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.
    The Use of High-Alloyed EAF Slag for the Neutralization of On-Site Produced Acidic Wastewater: The First Step Towards a Zero-Waste Stainless-Steel Production Process2019Ingår i: Applied Sciences, ISSN 2076-3417, Vol. 9, nr 19, artikel-id 3974Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Recycling of steelmaking slags has well-established applications, such as their use in cement, asphalt, or fertilizer industries. Although in some cases, such as the electric arc furnace (EAF) high-alloyed stainless-steel production, the slag’s high metal content prevents its use in such applications. This forces companies to accumulate it as waste. Using concepts such dematerialization, waste management, industrial symbiosis, and circular economy, the article drafts a conceptual framework on the best route to solving the landfilling issue, aiming at a zero-waste process re-design. An experimental part follows, with an investigation of the use of landfill slag as a substitute of limestone for the neutralization of acidic wastewater, produced by the rinsing of steel after the pickling process. Neutralization of acidic wastewater with both lime and slag samples was performed with two different methods. Two out of four slag samples tested proved their possible use, reaching desired pH values compared to lime neutralizations. Moreover, the clean waters resulting from the neutralizations with the use of both lime and slag were tested. In terms of hazardous element concentrations, neutralization with slag yielded similar results to lime. The results of these trials show that slag is a potential substitute of lime for the neutralization of acidic wastewater.

    Ladda ner fulltext (pdf)
    The Use of High-Alloyed EAF Slag for the Neutralization of On-Site Produced Acidic Wastewater: The First Step Towards a Zero-Waste Stainless-Steel Production Process
  • 49.
    del Pozo, David Fernandes
    et al.
    Univ Ghent, Dept Data Anal & Math Modelling, BIOMATH, Coupure Links 653, B-9000 Ghent, Belgium.;Ctr Adv Proc Technol Urban Resource Recovery CAPT, Ghent, Belgium..
    Ahmad, Arslan
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Department of Environmental Technology, Wageningen University and Research (WUR), Droevendaalsesteeg 4, 6708, PB, Wageningen, Netherlands.
    Rehman, Usman
    AM TEAM, Dendermondsesteenweg 48-1, B-9000 Ghent, Belgium.;Ctr Adv Proc Technol Urban Resource Recovery CAPT, Ghent, Belgium..
    Verliefde, Arne
    Univ Ghent, Fac Biosci Engn, Dept Green Chem & Technol, Particle & Interfacial Technol Grp,PaInT, Coupure Links 653, B-9000 Ghent, Belgium.;Ctr Adv Proc Technol Urban Resource Recovery CAPT, Ghent, Belgium..
    Nopens, Ingmar
    Univ Ghent, Dept Data Anal & Math Modelling, BIOMATH, Coupure Links 653, B-9000 Ghent, Belgium.;AM TEAM, Dendermondsesteenweg 48-1, B-9000 Ghent, Belgium.;Ctr Adv Proc Technol Urban Resource Recovery CAPT, Ghent, Belgium..
    A novel CFD model to predict effluent solids concentration and pressure drop in deep bed granular filters for water treatment2022Ingår i: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 295, artikel-id 121232Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Rapid sand filtration is a widely used technology to remove suspended solids in drinking water and wastewater treatment plants. One of the challenges of the rapid sand filtration is to reliably predict the removal efficiency of suspended solids and pressure drop as a function of filtration time. In this study we put forward a novel CFD model to simultaneously predict the solids concentration in the effluent and hydraulic resistence build-up in rapid sand filters. The CFD model is assessed against lab scale filtration data at different filter media grain sizes and filtration velocities. Our results show an overall satisfactory agreement with the observations. Finally, we highlight the complexity and need for further work in developing general CFD models for rapid sand filtration.

  • 50.
    Destouni, Georgia
    et al.
    Stockholm Univ, Dept Phys Geog, Stockholm, Sweden..
    Cantoni, Jacopo
    Stockholm Univ, Dept Phys Geog, Stockholm, Sweden..
    Kalantari, Zahra
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik. Stockholm Univ, Dept Phys Geog, Stockholm, Sweden..
    Distinguishing active and legacy source contributions to stream water quality: Comparative quantification for chloride and metals2021Ingår i: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 35, nr 7, artikel-id e14280Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Hydrochemical constituents in streams may originate from currently active sources at the surface and/or legacy sources from earlier surface inputs, waste deposits and land contamination. Distinction and quantification of these source contributions are needed for improved interpretation of tracer data and effective reduction of waterborne environmental pollutants. This article develops a methodology that recognizes and quantifies some general mechanistic differences in stream concentration and load behavior versus discharge between such source contributions. The methodology is applied to comparative analysis of stream concentration data for chloride (Cl-), copper (Cu), lead (Pb), and zinc (Zn), and corresponding data for water discharge, measured over the period 1990-2018 in multiple hydrological catchments (19 for Cl-, 11 for Cu and Zn, 10 for Pb) around the major Lake Malaren in Sweden. For Cl-, the average load fraction of active sources is quantified to be 19%, and the average active and legacy concentration contributions as 2.9 and 11 mg/L, respectively. For the metals, the average active load fractions at outlets are 1%-3% over all catchments and 9%-14% in the relatively few catchments with mixed metal sources. Average active and legacy concentration contributions are 0.14 and 3.2 mu g/L for Cu, 0.05 and 1.5 mu g/L for Pb, and 1.4 and 12 mu g/L for Zn, respectively. This multi-catchment analysis thus indicates a widespread prevalence of legacy sources, with greater legacy than active concentration contributions for both Cl- and the metals, and active contributions playing a greater role for chloride than for the metals. The relatively simple first-order methodology developed and applied in the study can be used to screen commonly available stream monitoring data for possible distinction of active and legacy contributions of any hydrochemical constituent in and across various hydrological catchment settings.

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