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  • 51.
    Al-Naami, Zurya
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Tillämpningen av BIM i ombyggnationen av Slussen- En hållbar innovation att lära sig av?2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Många myndigheter och organisationer som Naturvårdverket, FN och Stockholms stad har påpekat vikten av att främja och sprida innovationer för att uppnå en hållbar stadsutveckling. I syfte att främja uppkomsten, implementeringen och spridningen av innovationer som stödjer hållbar stadsutveckling fokuserar denna studie på att identifiera vanliga framgångsfaktorer och utmaningar som förekommer inom innovationsprocesser i hållbar stadsutveckling. Undersökningen baseras på en fallstudie med fokus på ”tillämpningen av BIM(Byggnadsinformationsmodellering) i ombyggnationen av Slussen”. I avsikt att uppnå syftet med rapporten samlades erfarenheter från Vinnova gällande vanliga framgångsfaktorer och utmaningar i innovationsprojekt. Ett teoretiskt ramverk som heter Technical Innovation System (TIS) användes för att utforska vilka faktorer som kan främja uppkomsten, implementeringen och spridningen av innovationer som stödjer en hållbar stadsutveckling. Tillslut gjorde tre jämförelser, först jämfördes framgångsfaktorerna och utmaningarna i fallstudien med det teoretiska ramverket TIS sedan jämfördes de med Vinnovas erfarenheter och tillslut jämfördes vinnovas erfarenheter med det teoretiska ramverket TIS. Resultatet visade att de vanligaste framgångsfaktorerna i en innovation är bland annat att det skall finnas behov av innovationen, att samverkan mellan involverade aktörer ska existera, att en gemensam vision för hur innovationen skall etableras vara tillgänglig och att erfarenheter skall tas tillvara på bland annat genom erfarenhetsutbyte. Flera utmaningar identifierades också. Dessa är bland annat att det finns brist på samverkan mellan aktörer, avsaknad av intresse för ny teknologi och svårigheter i etableringen av innovationen i marknaden. Många av framgångsfaktorerna som identifierades av fallstudien och från Vinnovas erfarenheter kunde bekräftas av det teoretiska ramverket TIS. För att summera föreslogs flera generella rekommendationen av författaren av rapporten till kommande arbete med främjande, implementering och spridning av innovationer. En av rekommendationerna är att informera och utbilda involverade om innovationen.

  • 52. Alnaami, Zurya
    et al.
    Duenas, José
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Wind Power Integration and Operational Challenges2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Wind power generation has gained considerable relevance in global energy markets in the last few decades. The technology behind wind turbines and their integration to the power grid are still the focus of considerable research. How exactly does this energy source influence the existing power distribution grid is still a matter of interest to many parties. The method used in this report is based on a literature study which intends to examine what is the current state of energy generation based on wind power in Sweden. In the report we have analyzed some of the integration and operational challenges of connecting a large amount of wind generated electricity to the power grid and attempted to provide an accurate and up to date summary of what these challenges will entail in the coming decade. Our results show that further research would greatly improve the current technology used in wind power generation to allow such a high level penetration. 

  • 53. AlSkaif, T.
    et al.
    Zapata, M. G.
    Bellalta, B.
    Nilsson, Anders
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    A distributed power sharing framework among households in microgrids: a repeated game approach2016Inngår i: Computing, ISSN 0010-485X, E-ISSN 1436-5057, s. 1-15Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In microgrids, the integration of distributed energy resources (DERs) in the residential sector can improve power reliability, and potentially reduce power demands and carbon emissions. Improving the utilization of renewable energy in households is a critical challenge for DERs. In this regard, renewable power sharing is one of the possible solutions to tackle this problem. Even though this solution has attracted significant attention recently, most of the proposed power sharing frameworks focus more on centralized schemes. In contrast, in this paper, the performance of a proposed distributed power sharing framework is investigated. The problem is formulated as a repeated game between households in a microgrid. In this game, each household decides to cooperate and borrow/lend some amount of renewable power from/to a neighboring household, or to defect and purchase the entire demands from the main grid based on a payoff function. The Nash equilibrium of this game is characterized and the effect of the strategies taken by the households on the system is analyzed. We conduct an extensive evaluation using real demand data from 12 households of different sizes and power consumption profiles in Stockholm. Numerical results indicate that cooperation is beneficial from both an economical and environmental perspective and that households can achieve cost savings up to 20 %.

  • 54. Al-Yaarubi, A. H.
    et al.
    Pain, C. C.
    Grattoni, C. A.
    Zimmerman, Robert W.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Navier-Stokes Simulations of Fluid Flow Through a Rock Fracture2013Inngår i: Dynamic Fluids and Transport Through in Fractured Rock, American Geophysical Union (AGU), 2013, s. 55-64Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    A surface profilometer was used to measure fracture profiles every 10 microns over the surfaces of a replica of a fracture in a red Permian sandstone, to within an accuracy of a few microns. These surface data were used as input to two finite element codes that solve the Navier-Stokes equations and the Reynolds equation, respectively. Numerical simulations of flow through these measured aperture fields were carried out at different values of the mean aperture, corresponding to different values of the relative roughness. Flow experiments were also conducted in casts of two regions of the fracture. At low Reynolds numbers, the Navier-Stokes simulations yielded transmissivities for the two fracture regions that were closer to the experimental values than were the values predicted by the lubrication model. In general, the lubrication model overestimated the transmissivity by an amount that varied as a function of the relative roughness, defined as the standard deviation of the aperture divided by the mean aperture. The initial deviations from linearity, for Reynolds numbers in the range 1-10, were consistent with the "weak inertia" model developed by Mei and Auriault for porous media, and with the results obtained computationally by Skjetne et al in 1999 on a two-dimensional self-affine fracture. In the regime 10 < Re < 40, both the computed and measured transmissivities could be fit very well to a Forchheimer-type equation, in which the additional pressure drop varies quadratically with the Reynolds number.

  • 55.
    Amatya, Anjali
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Study on Process Performance and Evaluation of Dala Vatten’s Two Municipal Wastewater Treatment Plants.2016Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Dala Vatten AB has been operating two municipal wastewater treatment plant namely Gagnef wastewater treatment plant and Tällberg wastewater treatment plant since 1970’s and 1950’s respectively in Dalarna, middle of Sweden. These both traditional treatment plants have been updated with continuous and intermittent aerated biological treatment facilities: Moving bed biofilm reactor (MBBR) in 2012 and 2007 respectively. Recently, more detailed process performance and evaluation of both plants is required focusing on energy consumption. The objective of this master thesis is thus to investigate the opportunities in reducing energy consumption from both plants to save operation cost, identify the opportunities for chemical saving, if possible reduce the excess sludge so produced from the plant and potential optimization of the process for its plant’s sustainability. The laboratory study was made in May and August, 2015 with grab sampling and flow proportional sampling method. The analysation was carried out with several wastewater parameters: BOD7, COD, TOC, TP, NH4-N and TN with Hach Lange analysing method.

    Results showed that both continue and intermittent aerated plants have higher process performance with lower effluent organic (BOD7, COD) and TP loading to the recipient. Gagnef WWTP with continuous aeration has demonstrated an excessive use of chemical, sludge production and high-energy consumption by the blower serving MBBR during the studied period. By contrast, Tällberg WWTP with intermittent aeration has proved to be successful in terms of lower energy consumption by the blower serving the MBBR but failed to show improved specific energy efficiency for each pollutant load during the studied period. The recommendation in improvising energy saving and saving operation cost at both treatment plants was put forward.

  • 56.
    Ammann, Reto
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    ESG Integration Among Large Nordic Institutional Asset Owners: Mapping Large Nordic Institutional Asset Owners’ Approaches to Sustainability and ESG Integration in the Investment Process2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Traditional investing is mainly concerned with creating a financial return on investment for the investor and hence disregards other non-financial issues such as adverse environmental and societal impacts. This negligence of negative impacts in the investment process is beginning to be addressed with the emergence of environmental, social, and governance (ESG) investing, socially responsible investing (SRI), and other sustainable investing types. Therefore, this thesis aims to establish if and how large Nordic institutional asset owners integrate sustainability and ESG concerns into their respective investment processes. Moreover, a secondary goal is to determine what type of investing the current investment processes of the seasset owners resembles most. The thesis utilizes a qualitative methodology in order to gather the necessary data-points. All the information in this thesis comes from publicly available sources such as annual reports and sustainability reports. The study found that the asset owners analyzed utilize ESG integration in their investment processes. The asset owners have specific guidelines that pertain to ESG issues, and screen for non-compliance to ensure that investments with potentially detrimental effects on society are excluded from their respective portfolios. Aminority of the asset owners also utilizes best-in-class screening to identify investments with the strongest ESG performance. Hence, the asset owners, in general, are located between SRI and ESG investing on the motivation spectrum.

  • 57.
    An, Jihyun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Feminist Futures: Futures studies through the lens of feminist epistemologies2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This study explores how futures studies could engage with critical feminist perspectives in an intrinsic manner and what feminist futures might mean. The study brings attention to the less discussed subject of epistemological basis in futures studies. Literature study and semi-structured interviews with practitioners and researchers working with feminist approaches in the fields related to futures development was deployed. I’ve analyzed Wendell Bell’s discussion on epistemological foundation of futures studies from feminist epistemological perspective, and have suggested the potential of feminist epistemology of situated knowledges and partial objectivity for futures studies. Based on the findings from the semi-structured interviews, an alternative feminist scenario set in Swedish society in the year of 2050 in the format of a fiction is presented with the aim to provide a detailed and situated narrative of political and daily lives in feminist futures. The feminist futures scenario should not be understood as the singular feminist future suggested for implementation. The intention is to demonstrate how the visionary dimensions of feminist studies could be articulated in various forms of futures studies, and to open up space for rich debates on envisioning feminist futures. 

  • 58.
    An, Jihyun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Feminist Futures: Futures studies through the lens of feminist epistemologies2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This study explores how futures studies could engage with critical feminist perspectives in an intrinsic manner and what feminist futures might mean. The study brings attention to the less discussed subject of epistemological basis in futures studies. Literature study and semi-structured interviews with practitioners and researchers working with feminist approaches in the fields related to futures development was deployed. I’ve analyzed Wendell Bell’s discussion on epistemological foundation of futures studies from feminist epistemological perspective, and have suggested the potential of feminist epistemology of situated knowledges and partial objectivity for futures studies. Based on the findings from the semi-structured interviews, an alternative feminist scenario set in Swedish society in the year of 2050 in the format of a fiction is presented with the aim to provide a detailed and situated narrative of political and daily lives in feminist futures. The feminist futures scenario should not be understood as the singular feminist future suggested for implementation. The intention is to demonstrate how the visionary dimensions of feminist studies could be articulated in various forms of futures studies, and to open up space for rich debates on envisioning feminist futures. 

  • 59.
    Andersson, Carl
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Olausson, Linus
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Identifiering av mervärden i EPC-projekt2015Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    In this report a study is carried out with the aim to identify added values of EPC projects implemented in schools in order to increase the interest of EPC projects on the market. The report examines how the planned maintenance, supervision, maintenance and corrective maintenance is affected, how insurance premiums and terms are affected, the indoor environment and how the tasks of the operating staff is changing. A literature study of energy savings, energy use in schools, maintenance and insurance as well as how energy efficiency improvements are related to the Swedish environmental objectives has been made. Visits were carried out in Ludvika, interviews were also carried out with operation technicians and local strategists in Ludvika as well as employees of insurance companies.

    Schools often have neglected maintenance and problems with ventilation and indoor environment. Schools also have a large energy saving potential due to their low utilization, mainly because they are empty parts of the year. All Swedish schools could reduce their electricity consumption by 1 TWh per year, which in money equivalents to the salary costs of about 2,000 teaching positions.

    8 schools in Ludvika and 10 schools in Piteå who has completed EPC projects have been studied. The time periods studied are seven years for Ludvika, 2006 – 2012, and for Piteå five years, 2010 – 2014. The data of fault reports and maintenance costs are taken from the municipalities, and descriptions of schools and EPC projects have been received from Caverion who has carried out the EPC projects. Data for maintenance has to some extent been selected in consultation with employees at the municipalities.

    The number of error reports in Piteå schools have shown a slight downward trend with a peak while the EPC project was carried out and one year after. Ludvika has shown an upward trend in maintenance costs, but this is probably due to previously accumulated maintenance. The amount of corrective maintenance is reduced, but only after the project when newly found errors have been fixed and the systems have been properly adjusted. The tasks related to supervisory and maintenance has changed when remote control of systems was installed which leads to a better overview and simplifies troubleshooting. The indoor temperature got more stable, but only after they fixed the weaknesses revealed in connection with the operational optimization. However, there are complaints in Ludvika of low temperatures, but it is caused the target temperature being set too low by the municipality. Insurance is only marginally affected, and only when damage prevention measures are implemented in the properties, which is not done in the studied properties. However, the underlying data sets are too small and over a too small time period to prove any certain changes.

    An added value identified is the ability to use EPC projects as a tool to address deferred maintenance in the real estate portfolio outside the normal budgetary framework while achieving energy savings. 

  • 60.
    Andersson, Elin
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Hietala, Sofia
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Application of a new method to improve river cross sections derived from satellite images2018Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    In hydrological and hydraulic modelling, river geometry is a crucial input data. Recent investigations have been looking at methods to improve the description of cross sections extracted by DEM derived by satellite images. SRTM derived DEM are often lacking precise information as the sensors cannot detect the submerged river parts, but, on the other hand, it is available on a global scale which makes it very attractive and useful, especially in data scarce regions. This study aims at applying the so called “slope break” method to improve river cross section geometry extracted from SRTM DEM. The report is divided into three parts: a) The making of a Matlab-code to improve cross sections geometry extracted by satellite derived DEM; b) an application of the code to real cross-sections from the river Po in Italy and c) hydraulic simulations with and without SRTM modified cross sections to test the performance of the method, in collaboration with senior colleagues. The Matlab successfully performs the slope break point and finds, when appropriate, the approximated lowest point zmin of the cross section below the water surface. The comparison of the river geometry of the modified SRTM cross sections versus LiDAR available cross sections show the good performance of the method in improving the river geometry description. This code can simplify the work and improve many SRTM river cross sections in an effective way. The hydraulic simulations performed with and without the modified cross sections show how the modified SRTM model improves when compared to LiDAR results 

  • 61.
    Andersson, Erik
    et al.
    Stockholm Resilience Centre, Stockholm University.
    Borgström, Sara
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. Stockholms universitet, Stockholm Resilience Centre.
    McPhearson, Timon
    The New School, New York.
    Double Insurance in Dealing with Extremes:Ecological and Social Factors for MakingNature-Based Solutions Last2017Inngår i: Nature‐based Solutions to Climate Change Adaptationin Urban Areas: Theory and Practice of Urban Sustainability Transitions / [ed] Kabisch, N.,Korn, H., Stadler, J.,Bonn, A., Germany: Springer, 2017, s. 51-64Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Global urbanisation has led to extreme population densities often in areasprone to problems such as extreme heat, storm surges, coastal and surface flooding,droughts and fires. Although nature based solutions (NBS) often have specifictargets,one of the overarching objectives with NBS design and implementation is toprotect human livelihoods and well-being, not least by protecting real estate andbuilt infrastructure. However, NBS need to be integrated and spatially and functionallymatched with other land uses, which requires that their contribution to societyis recognised. This chapter will present an ecologically grounded, resilience theoryand social-ecological systems perspective on NBS, with a main focus on how functioningecosystems contribute to the ‘solutions’. We will outline some of the basicprinciples and frameworks for studying and including insurance value in worktowards climate change adaptation and resilience, with a special emphasis on theneed to address both internal and external insurance. As we will demonstratethrough real world examples as well as theory, NBS should be treated as dynamiccomponents nested within larger systems and influenced by social as well as ecologicalfactors. Governance processes seeking to build urban resilience to climatechange in cities and other urban dynamics will need to consider both layers of insurancein order to utilize the powerful role NBS can play in creating sustainable,healthy, and liveable urban systems.

  • 62.
    Andersson, Erik
    et al.
    Stockholm University.
    Langemeyer, Johannes
    Institute of Environmental Science and Technology at the Universitat Autònoma de Barcelona.
    Borgström, Sara
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    McPherson, Timothy
    Enabling Green and Blue Infrastructure to Improve Contributions to Human Well-Being and Equity in Urban Systems2019Inngår i: BioScience, ISSN 0006-3568, E-ISSN 1525-3244, Vol. 69, nr 7, s. 566-574Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The circumstances under which different ecosystem service benefits can be realized differ. The benefits tend to be coproduced and to be enabled by multiple interacting social, ecological, and technological factors, which is particularly evident in cities. As many cities are undergoing rapid change, these factors need to be better understood and accounted for, especially for those most in need of benefits. We propose a framework of three systemic filters that affect the flow of ecosystem service benefits: the interactions among green, blue, and built infrastructures; the regulatory power and governance of institutions; and people's individual and shared perceptions and values. We argue that more fully connecting green and blue infrastructure to its urban systems context and highlighting dynamic interactions among the three filters are key to understanding how and why ecosystem services have variable distribution, continuing inequities in who benefits, and the long-term resilience of the flows of benefits.

  • 63.
    Andersson, Evelina
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Water demand and supply in Dar es Salaam: A WEAP-model to estimate future scenarios2019Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The water and sewage company in Dar es Salaam, Tanzania has expressed a lack of integrated development plan for their service area. The current planning does not combine the social, economic and environmental stakeholders. This project investigated how rapid urbanisation and Tanzania’s vision of going from a low to middle-income country before 2025 will affect the water demand together with an investigation of the sustainability of the water supply in the city, Dar es Salaam. Furthermore, the study also investigated the collected historical data from the city’s biggest water supplier, Ruvu river, to examine if there are any changes in waterflow. The study used previous research, collaboration with students and interviews with the stakeholder and experts to collect information and estimate historical patterns. With the software, Water And Evaluation Planning (WEAP), the study processed the historical data to simulate future scenarios with aim on sustainability and development mentioned above. The study shows an increased demand in the future as a result of both urbanisation and economic growth and unmet demand in all scenarios. From the historical data the study shows a small decrease in total quantity and an upgoing trend of the peaks that occur during the biggest annual rainy season. Lastly, the study finds a need of looking at the current sources of supply to achieve sustainable utilization of the resource. 

  • 64.
    Andersson, Katja
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Helin, Alva
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Alger som mat: - Litteraturstudie och sammanställning av makroalgers näringsinnehåll.2018Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Syftet med rapporten är att sammanställa samt jämföra olika ätbara makroalgarter från det Rhodophyta, Phaeophyta och Chlorophyta divisionerna utifrån dess näringsinnehåll. Detta för att analysera algernas utvecklade potential som livsmedel och som substitut till animaliska proteinkällor. För att uppnå syftet kommer algarternas näringsinnehåll att sammanställas utifrån protein-, kolhydrat- och fettinnehåll genom datainsamling av tidigare forskning. Rapporten utgörs av en litteraturstudie där insamling av data sker via databasen Google Scholar och enbart originalartiklar väljs ut. Algernas näringsvärde jämförs sedan med värden för sju referensprodukter som används som proteinkällor på livsmedelsmarknaden idag. Rapporten visar att alger hos divisionen Rhodophyta har det högsta proteininnehållet, men att även alger hos övriga divisioner innehåller mer protein än ett flertal av referensprodukterna. De granskade algarterna har generellt sett goda förutsättningar att substituera många av referenslivsmedlen och därmed den näringsinnehållsmässiga potentialen för utvecklad användning inom livsmedelsindustrin.

  • 65.
    Andersson, Lovisa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Studie av elsparkcyklar ur ett användarperspektiv2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Elsparkcyklar, dvs. uppladdningsbara batteridrivna sparkcyklar, utgör en ny tillgänglighetstjänst och en ny typ av färdmedel som varken bullrar eller bidrar till luftföroreningar och utsläpp av växthusgaser. Elsparkcyklarna har pekats ut som en ny transportlösning som bidrar till en mer hållbar stadstrafik, men riktigheten i detta påstående beror på hur de används. I den här studien undersöks därför några stockholmares resor med elsparkcykel.

    Elsparkcyklarna är ett nytt fenomen i stadsmiljön och i dagsläget är litteratur och tidigare studier i ämnet begränsad. Studien består av en enkätundersökning med kompletterande intervjufrågor samt en kunskapsöversyn som sammanfattar relevant innehåll från ett urval av tidigare studier. Avslutningsvis diskuteras två aspekter, dels hur resultaten kan tolkas och dels hur frågor som berör elsparkcyklar kan tas vidare i andra studier kopplade till stads- och trafikplanering.

  • 66.
    Andersson, Maria
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Hållbarhetsstyrning i renoveringsprocessens senare skede: Uppföljning & förvaltning2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Bostadssektorn svarar för en betydande del av landets totala miljöpåverkan, men det finns stor potential till förbättringar. Sektorn står inför ett omfattande renoveringsbehov, vilket skapar goda förutsättningar för sociala och miljöförbättrande åtgärder. För att lyckas krävs det bland annat strukturerade arbetsmetoder med väl uppsatta miljö- och hållbarhetsmål som följs genom hela renoveringsprocessen. Ett kritiskt läge är processens slutskede när renoveringsåtgärderna är färdigställda och byggnaden lämnas över till förvaltaren. Syftet med denna studie är därför att dels utvärdera hur dagens hållbarhetsstyrning fungerar i renoveringsprocessens sista skeden, samt att ge förslag på metoder som säkerställer att hållbarhetsfrågor och hållbarhetsmål följs upp och fortskrider in i förvaltningen samt håller över tid.

    Intervjuer med elva företagsrepresentanter från nio fastighetsbolag och två representanter från en bransch- och intresseorganisation tillsammans med litteraturstudier är de metoder som använts i studien.

    Resultatet visar att det finns brister i dagens hållbarhetsstyrning vid överlämning, uppföljning, erfarenhetsåterföring och förvaltning. Det handlar främst om att projektspecifika miljömål inte fortskrider in i förvaltningen samt att rutiner för erfarenhetsåterföring och uppföljning är bristfälliga. Det finns omständigheter och svårigheter som står i vägen för en ambitiösare hållbarhetsstyrning i renoveringsprocessens slutskede. Dessa är identifierade som tekniska, sociala, ekonomiska, administrativa, organisatoriska och psykologiska barriärer. Dock finns det förbättringsmöjligheter för att minimera eller få kontroll över dessa hinder, vilka främst handlar om nya metoder och bättre strukturer.

    Utifrån studiens resultat och slutsatser har en hållbarhetsmanual skapats för att underlätta för berörda aktörer att prioritera och styra hållbarhetsarbetet i renoveringsprocessens slutskede på ett bra sätt där hållbarhetsmål följs upp och fortskrider in i förvaltningen samt håller över tid. 

  • 67.
    Andersson, Maria
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Ring, Mikaela
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    The Need for Permanent Mooring Buoys in  the Gulf of Thailand: A Minor Field Study2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this paper is to evaluate the need for permanent mooring buoys at the popular off-shore islands of Pattaya, Thailand. By investigating the ecological, social and economic gains and losses of installing such buoys, the project aims to examine whether such buoys would help support a more sustainable development in the area. In order to fulfil the aims and objectives of the project, a literature study, two different questionnaires, interviews, line intercept transects (LIT) and a boat traffic survey were performed. 

    The results prove that every dive store operator, 71% of the dive instructors/dive masters and 65% of the tourist divers that took part in the interviews or questionnaires have observed anchor damages in the area. This is supported by the results of the LITs, which, although differing greatly between depths, reveal a top score of 44% damaged corals (of which 20% were apparent anchor damages) at snorkelling depth at site 3. At diving depth the damage indexes were generally lower, revealing a top score of 38% damaged corals at Site 2, but no definite anchor damages. The boat traffic survey showed that 192 boats were active in the area, of which 47 used an anchor, during a 3 hour period a Saturday morning. The results also prove that dive store operators and questionnaire participants generally agree that divers wish to see healthy reefs and great aquatic biodiversity when visiting a dive site. The interviews showed that all dive store operators have a positive attitude towards an installation of mooring buoys in the area, which could protect the local reefs and thereby their own business. 85% of the tourist divers that took part in the questionnaires stated they would be willing to pay extra (where a majority of those with a WTP would be willing to pay 7-13 USD) if they could be guaranteed to see healthy coral reefs and a great diversity in species and 88% stated they would be willing to pay extra (where a majority of those with a WTP would be willing to pay 0.7-1.7 USD)  to support a permanent mooring buoy system.  The interviews and the questionnaires also prove that healthy coral reefs hold a special sentimental value, providing invaluable recreational opportunities to humankind. 

    Conclusively the results indicate that there is a need for permanent mooring buoys in the area. The ecological, social and economic gains of installing permanent mooring buoys seem to overshadow the cost of installation and maintenance of the buoys, meaning the buoys would most certainly improve the conditions for a more sustainable development in the area.

  • 68.
    Andersson, Martin
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Vindkraftverk med trätorn: Miljöpåverkan och kostnad jämfört med ståltorn2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this report was to research the differences in environmental impact and cost of building wind power turbines using cross-laminated timber (CLT) instead of steel which are commonly used for today’s wind turbine tower. By analyzing data obtained from distributors and related businesses within the market for the production of these two materials environmental impact and costs, a result relevant to the Swedish wood- and wind power market could be obtained.

    The final results showed a 15 times greater total emissions of carbon dioxide equivalents for the steel tower. Even for emissions per MWh showed that steel produced more emissions than the CLT tower. Both the total cost and cost per MWh were lowest for the 100 m CLT tower. Emissions of other hazardous substances were also overall higher for wind turbines using a steel tower. 

  • 69.
    Andersson, Niklas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Malmös strategi för social hållbarhet med fokus på förorten2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This report covers the social sustainability agenda in the suburbs Rosengård and Kroksbäck, situated in Malmö. These suburbs where constructed mainly in the years 1960-1975 and are now in need of refurbishing. There is also a housing shortage in Malmö and the demand is mainly for inexpensive apartments. Young adults, students, immigrants, senior citizens and families alike are looking for places where they can afford to live. The high demand for living space and the need of renovation could spark a gentrification process which would not be socially sustainable. The main actors whose social sustainability agendas are reviewed are the municipality of Malmö and the municipal owned housing company of MKB as well as the tenants’ association. The report also covers how the dialogue between the residents in Rosengård, the civil servants of the city and the landlords is carried out. Reactions from the residents in Rosengård have been researched in newspapers, but it proved hard to find while criminal reports where abundant. Lastly two examples on how the social sustainability agenda have been carried out in Gothenburg is presented. The methodology which the results are based on is a literature review.

    The report finds that both Malmö and Gothenburg are using a matrix formed decision tool in order to incorporate social aspects in all planning decisions. This is something which works well in both cities. The municipality of Malmö took a decision in 2014 that the social justice will increase when building new apartments. They do however realize the most of the newly constructed homes might be too expensive but they hope that this will eventually free up cheaper apartments. Different investment programs have been initiated in Rosengård, Rosengård I förvandling is one of them. Part of this program was based on local farming and different pedagogical activities. MKB are using social clauses when hiring different contractors, they stipulate that ten percent of the workforce should be locals or people who previously have been unemployed. This would be one the few tangible solutions which MKB is contributing with to solving the problem with lack of social sustainability. The tenants’ association is mainly focusing on minimizing the rent increase. They do however see a potential in so called neighborhood effects such as social learning were tenants are affecting other tenants in a positive way. The tennants’ association believes, as do the municipality of Malmö, that this can be achieved partly by constructing new houses among the older ones.

    The dialogue between the residents and the municipality used to be characterized as too little too late in the planning process. The revised aim with the dialogue is now to bring the citizens opinions into the decision process at an earlier stage. A potential problem could be the language barriers as there are many immigrants living in suburban Malmö. However in projects where the dialogue where given a priority the outcome became a success and the decision enjoys a broad support. As a recommendation for future research, a survey or deep interviews with the residents on their thoughts about actions taken to increase the social sustainability could be carried out. This is something which this report is lacking, good feedback from the residents. 

  • 70.
    Andersson, Sara
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Mapping Uncertainties – A case study on a hydraulic model of the river Voxnan.2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This master thesis gives an account for the numerous uncertainties that prevail one-dimensional hydraulic models and flood inundation maps, as well as suitable assessment methods for different types of uncertainties. A conducted uncertainty assessment on the river Voxnan in Sweden has been performed. The case study included the calibra-tion uncertainty in the spatially varying roughness coefficient and the boundary condi-tion uncertainty in the magnitude of a 100-year flood, in present and future climate conditions.

    By combining a scenario analysis, GLUE calibration method and Monte Carlo analysis, the included uncertainties with different natures could be assessed. Significant uncer-tainties regarding the magnitude of a 100-year flood from frequency analysis was found. The largest contribution to the overall uncertainty was given by the variance between the nine global climate models, emphasizing the importance of including projections from an ensemble of models in climate change studies.

    Furthermore, the study gives a methodological example on how to present uncertainty estimates visually in probabilistic flood inundation maps. The conducted method of how the climate change uncertainties, scenarios and models, were handled in frequency analysis is also suggested to be a relevant result of the study.

  • 71.
    Andersson, Simon
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Analys av energisimulering från projekteringsskede och verklig energianvändning i lokalbyggnad.2013Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Idag sker ett kontinuerligt arbete med att reducera energianvändningen i byggnader under desslivscykel för att minska miljöbelastningen och utnyttjandet av fossila energikällor. En reduceringav energianvändningen utgör även ett ekonomiskt incitament genom minskade energikostnader.Inom byggsektorn arbetar flertalet företag med olika former av miljöcertifieringar såsomMiljöbyggnad, LEED och BREAM. En viss del av bedömningen bygger på en energisimuleringav projekterad byggnad, ett scenario av framtida energianvändning.

    Energisimuleringar utgör ett beslutsunderlag och kan användas under hela byggprocessen menlämpar sig främst under projektering då flertalet beslut rörande olika faktorer såsom klimatskal,ventilationssystem, värme och kyla samt framtida drift och styrning behandlas.

    I detta examensarbete analyseras energianvändningen i fastighet BioCentrum i Uppsala utifråndriftår 2012 och jämförs mot projekterade värden från tidigare energisimulering. En jämförelsegörs även mellan indata och antaganden samt projekterade energiflöden för värme, komfortkyla,processkyla och el. Att arbeta med energisimuleringar under projektering är en kontinuerligprocess och på vilket sätt detta verktyg kan förbättras i projekteringsarbetet diskuteras. Tre faktorer har behandlats, vilka är utomhusklimatets påverkan på energianvändningen, drift ochstyrning av olika system inom fastigheten samt brukarens beteende och verksamhet. Med hjälp avunderlag från driftår 2012 genomförs en uppdaterad energisimulering för analys och jämförelse.

    För fastighet BioCentrum syns en tydlig ökning av både värme och kyla samt el i jämförelse medprojekterade värden. Orsak till detta är i många fall verksamhetsanknutet genom ökade driftstider,förhöjda luftflöden i ventilationssystem samt en varierande verksamhet inom byggnadensom kräver ett stort behov av el, men även kylning av dess interna laster. Störst påverkan påresultatet från energisimulering har bedömningen av den verksamhetsanknutna internvärmensamt luftflöden i laborationslokaler.

    Tre resultat som verifieringsprocessen sammanställer är hur mätarstrukturen i drift fungerar, vilkaförändringar som skett under produktion i förhållande till projektering samt hur verksamhetenidag utnyttjar och styr de tekniska systemen. Till stor del en verifiering av projekterad data.

    Genom uppföljning och verifiering skapas en nulägesbild över energianvändningen, vilkettillsammans med identifierade energieffektiviserande åtgärder skapar ett bra beslutsunderlag förframtida investeringar.

    För att förbättra projekteringsprocessen av framtida energianvändning och verifieringsprocessenär det viktigt att tydligt definiera vilka antaganden som genomförts under projektering samt vilkaprocesser som ingår i bedömning av specifik energianvändning. Att samredovisa underlag ochresultat möjliggör för en bättre uppföljning av nyckeltal och underlättar för förvaltning attoptimera och följa upp olika processer och system inom fastigheten.

    Sammanfattningsvis är hjälpmedel såsom energisimuleringar ett viktigt verktyg underprojekteringsprocessen och skapar ett scenario över framtida energianvändning. Detta arbetevisar på den komplexitet som finns vid uppföljning av energianvändningen inom lokalbyggnaderoch att ett bra samarbete mellan konsulter, beställare/fastighetsägare och hyresgäst är nödvändigtför att uppnå ett bra energiarbete under projektering och sedermera drift av fastigheten.

  • 72.
    André, Hampus
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Jonsson, Max
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    INDUSTRIELLT EKOLOGISK STADSODLING: EN KVALITATIV STUDIE SOM UNDERLAG FÖR EN STADSODLINGSREVOLUTION I  STOCKHOLM2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Rooted in Industrial Ecology (IE) theory, this report evaluates how urban agricultural concepts and techniques, can contribute to improved ecological sustainability within the inner city boundaries of Stockholm. An overarching literary study as well as an interview was carried out, resulting in a qualitative analysis followed by suggestions for practical implementations. A substantial convergence was found between the eco-restructuring objectives of IE and the principal motives for urban agriculture. Consequently, eco-restructuring objectives are found in varying degrees in the presented urban agricultural techniques. Industrial symbioses, permaculture and combinations of urban agricultural techniques are tools which are capable of corresponding adequately to the diversity of urban settings. Prominent occurrences of eco-restructuring objectives and provisioning of ecosystem services motivated, for instance; green walls on Hornsgatan, aquaponics on allotments, waste heat-utilizing rooftop gardens, as well as vertical farming in suitable eco-industrial symbioses.

  • 73.
    André, Hampus
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Jonsson, Max
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Svaret är 42, men vad är frågan?: En analys av EMEC-modellen och dess effekter på svensk klimatpolitik2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    EMEC är en allmänjämviktsmodell som har använts av Konjunkturinstitutet för att beräkna samhällsekonomiska kostnader av styrmedel, och utvärdera kostnadseffektivitet som en del av det svenska klimatpolitiska beslutsunderlaget. Med anledning av kritik som har riktats mot modellen har detta examensarbete syftat till att analysera EMEC och dess effekter i klimatpolitiken, samt belysa och diskutera aspekter som eventuellt behövs utvecklas eller hanteras på ett annat sätt i den svenska klimatpolicyutvärderingen. En intervju - och litteraturstudie bidrog med ett kontrasterande aktörsperspektiv på olika identifierade nyckelaspekter som sedan utgjorde ett ramverk för analysen av en efterföljande empirisk studie. Resultaten visar att det finns starka skäl att påstå att modellen har överskattat kostnader av utsläppsminskningar vilket sannolikt har påverkat Sveriges klimatpolitiska inriktning. I direkt anknytning till modellen argumenteras detta bero på svårigheten i att göra antaganden om framtida teknik-och prisutvecklingar, samt på modellens statiska utformning. I samband med modellens klimatpolitiska roll kan det argumenteras bero på ett relativt kortsiktigt tidsperspektiv och en endimensionell bedömning av klimatomställningens nytta i relation till klimatfrågans långsiktighet och flerdimensionella nyttosida. Det kan också påpekas att detta fördyrar klimatpolitiken på lång sikt.

    En alternativ klimatpolicyutvärdering tillämpar ett bredare grepp genom att exempelvis inkludera de dynamiska kostnader som är förknippade med inlåsningseffekter i kolintensiva strukturer, vilket med en kontrafaktisk jämförelse sänker kostnaden av en klimatpolicy. Vid fortsatt styrmedelsutvärdering med EMEC föreslås en förändring av hur resultaten ska tolkas. Givet att det politiska sammanhanget också fortsättningsvis kräver kvantitativa underlag finns det ett behov av en mer varierad klimatpolicyutvärdering, där också kvalitativa aspekter och fler indikatorer än BNP beaktas som komplement. 

  • 74.
    Angelstam, Mikael
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    A Future in Sustainable Development: Backcasting the SDGs2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    In 2015 the 17 Sustainable Development Goals were adopted by 193 member states of the United Nations. The SDGs are highly ambitious and their underlying processes are interconnected by causal relationships. Work towards fulfilling them therefore requires considering how solutions for one goal will impacts others. In this study target-oriented backcasting is applied to examine set goals in the future, as well as to determine the current state and trends of development. This is done in an effort to determine conflicts between targets and resource limitations of future development. The findings suggest that the current paradigm of giving GDP growth highest societal priority, leads to a causal relationship where development occurs at the expense of sustainability at the global level. In order to overcome this, the fulfilment of the SDGs has to be given higher priority than the size and growth rate of the GDP.

  • 75.
    Annaduzzaman, Md
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Chitosan biopolymer as an adsorbent for drinking water treatment: Investigation on Arsenic and Uranium2015Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    In many countries over the world (including Sweden), metal toxicity in freshwater resources causes a severe drinking water quality problem and poses a threat to the environment and human health. Among the different toxic metals in the water resources of Sweden, arsenic and uranium are the biggest threats to health. These elements, over long time consumption, may even lead to cancer and/or neurological disorder. Most of the wells are installed in crystalline and sedimentary bedrock and the received water comes from water bearing fractures in the bedrock. The handling of such water is an issue and there is a need to reduce the arsenic and uranium exposure by improving processes and technologies. It is a very serious problem demanding a safe, sustainable and eco-friendly arsenic and uranium removal technology prior to drinking water supply. Different treatment systems are available, but many of them are not suitable due to their high cost, operation complexity and waste management issues. Through this study, chitosan biopolymer the second largest abundant polysaccharide on earth after cellulose, was verified as a potential adsorbent for arsenic(V) and uranium(VI) removal from water solution. Adsorbent characterizations were also conducted by XRD, FTIR, SEM, UV-visible spectrum and TGA/DTA investigations. Bench-scale batch experiments were conducted using chitosan biopolymer (DDA-85%) as an adsorbent to determine the arsenic(V) and uranium(VI) removal efficiency, by allowing four important effective parameters e.g. chitosan dosages, pH, contact time and contaminant concentration. The adsorption data at optimum conditions were fitted with Langmuir, Freundlich and Dubinin-Radushkhevic (D-R) isotherm and Lagergren pseudo-first-order and pseudo-second-order kinetic model to investigate the adsorption process. The characterization of materials assured the presence of effective amino, hydroxyl, and carboxyl groups of chitosan. Another advanntage is that the materials are bio-degradable. The results show that the arsenic(V) and uranium(VI) removal efficiency was 100% and 97.45% after 300 minutes with optimum pH of 6.0 and 7.0 respectively. The optimum adsorbent dosages and initial concentration were 60 and 80g/L and 100 and 250 µg/L respectively. The adsorption process was suitably described by Freundlich isotherm (R2 = 0.9933) and Langmuir isotherm (R2 = 0.9858) correspondingly for arsenic(V) uranium(VI) compared to other isotherms. This is an important indicator of homogeneous monolayer adsorption of metals. For both of arsenic(V) and uranium(VI), pseudo-second-order explained the adsorption kinetics better than pseudo-first-order and the second-order kinetic regression coefficient (R2) were 0.9959 and 0.9672 correspondingly. Connecting to the above mentioned results, it can be summed up that the chitosan biopolymer (DDA 85%) can be used as an inexpensive, sustainable and environment-friendly treatment option for arsenic(V) and uranium(VI) contaminated drinking water.

  • 76.
    Annaduzzaman, Md
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. Sanitary Engineering Section, Department of Water Management, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Biswas, Ashis
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India.
    Hossain, M.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. NGO Forum for Drinking Water Supply and Sanitation, Block-E, Lalmatia, Dhaka 1207, Bangladesh.
    Ahmed, K. M.
    van Halem, D.
    Arsenic and manganese in shallow tubewells: validation of platform color as a screening tool in Bangladesh2018Inngår i: Groundwater for Sustainable Development, ISSN 2352-801X, Vol. 6, s. 181-188Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This study aimed to evaluate the potential of handpump tubewell platform color as a low-cost, quick and convenient screening tool for As and Mn in drinking water tubewells. For this study, groundwater samples and corresponding tubewell platform pictures were collected from 272 shallow tubewells in Matlab Upazila of South-Eastern Bangladesh. The result shows that arsenic concentration within the surveyed (n = 272) tubewells, 99% (n = 269) exceeded the World Health Organization (WHO) guideline value of 10 µg/L, and 98% (n = 267) exceeded the Bangladesh drinking water standards (BDWS) of 50 µg/L. In relation to the platform color concept, within 233 (total 272) red colored platform tubewells, 230 (99%) exceeded the WHO guideline value of 10 µg/L, and 229 (98%) tubewells exceeded BDWS of 50 µg/L. This result shows a strong correlation between the development of red color stain on tubewell platform and As concentrations in the corresponding tubewell water. This study suggests that red-colored platform can be used for primary identification of tubewells with an elevated level of As and thus could prioritize sustainable As mitigation management in developing countries where water comes from reductive shallow aquifers. This study did not confirm the potential for Mn screening, as red discoloration by Fe oxides was found to mask the black discoloration of Mn oxides. It is recommended to further investigate this screening tool in regions with a higher well-to-well variability of As contaminations, as in the presented study As was found >10ug/L in 99% of the tubewells.

  • 77.
    Annaduzzaman, Md.
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Deshpande, Paritosh Chakor
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Ersoz, M.
    Lazarova, Z.
    Chitosan biopolymer: a treatment option for uranium(VI) removal from drinking waterManuskript (preprint) (Annet vitenskapelig)
  • 78.
    Annaduzzaman, Md.
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Ersoz, M.
    Lazarova, Z.
    Characterization of a chitosan biopolymer and arsenate removal for drinking water treatment2014Inngår i: One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment, CRC Press, 2014, s. 745-747Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Chitosan biopolymer with a deacetylation degree of 85%, was assessed for its capability to adsorb As(V) from drinking water by batch experiments. To characterize the chitosan biopolymer, chitosan was analyzed by FTIR and SEM. The results showed that chitosan is an effective and promising sorbent for As(V) from drinking water. From the batch tests, results showed a maximum adsorption of 355 μg/L of As(V) with 1.18 μg g-1 adsorption capacity at pH 6. The kinetic data, obtained at pH 6 could be fitted with pseudo-second order equation (adsorption capacity: 0.923 μg g-1) and the process was suitably described by a Freundlich (R2 = 0.9933) model than by a Langmuir model (R2 = 0.9741). The results above indicated that chitosan is a very favorable sorbent for As(V) removal from aqueous solution.

  • 79.
    Annaduzzaman, Md.
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Bhattacharya, Prosun
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Ersoz, M.
    Lazarova, Z.
    Evaluation and optimization of chitosan biopolymer as an adsorbent for arsenic(V) in drinking watert treatmentManuskript (preprint) (Annet vitenskapelig)
  • 80.
    Annaduzzaman, Md.
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Biswas, Ashis
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Hossain, Md
    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. International Center for Applied Climate Science, University of Southern Queensland, Toowoomba, QLD, Australia .
    Alauddin, M.
    Cekovic, R.
    Alauddin, S.
    Shaha, S.
    Tubewell platform color as a screening tool for arsenic in shallow drinking water wells in Bangladesh2016Inngår i: Arsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016, CRC Press/Balkema , 2016, s. 632-633Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The development of a simple and low cost technique for determination of arsenic (As) in drinking water wells is an urgent need to accelerate As mitigation policy. The aim of this study was to evaluate the potentiality of tubewell platform color as low-cost, quick and convenient screening tool for As. The result shows strong correlation between the development of red color stain on tubewells platform and As enrichment in the corresponding tubewells water compared to WHO (10 μg/L) and BDWS (50 μg/L), with 99% certainty. The red color stain in the platform indicates 98% sensitivity with WHO (10 μg/L) and BDWS (50 μg/L). With regard to WHO and BDWS, the corresponding efficiency of the platform color as screening tool for As are 97.3% and 97%. This study suggests that platform color can be potentially used for screening tubewells, help users switch to tube wells with low As and facilitate sustainable As mitigation efforts in developing countries. 

  • 81.
    Antonsson, Hans
    et al.
    Swedish National Road and Transport Research Institute.
    Finnveden, Göran
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Gullberg, Anders
    Beser Hugosson, Muriel
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap, Systemanalys och ekonomi.
    Höjer, Mattias
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Isaksson, Karolina
    Swedish National Road and Transport Research Institute.
    Kaijser, Arne
    Filosofi och historia, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Filosofi och teknikhistoria, Historiska studier av teknik, vetenskap och miljö.
    Laestadius, Staffan
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Hållbarhet och industriell dynamik.
    Mattsson, Lars-Göran
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nelldal, Bo-Lennart
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap.
    Summerton, Jane
    Swedish National Road and Transport Research Institute.
    Åkerman, Jonas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Nu finns chansen att riva upp beslutet om förbifarten2014Inngår i: Dagens nyheter, ISSN 1101-2447, nr 2014-09-16Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 82.
    Antonsson, Hans
    et al.
    Swedish National Road and Transport Research Institute.
    Finnveden, Göran
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Gullberg, Anders
    Höjer, Mattias
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Isaksson, Karolina
    Swedish National Road and Transport Research Institute.
    Kaijser, Arne
    Filosofi och historia, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Filosofi och teknikhistoria, Historiska studier av teknik, vetenskap och miljö.
    Laestadius, Staffan
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Hållbarhet och industriell dynamik.
    Mattsson, Lars-Göran
    KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
    Nelldal, Bo-Lennart
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap.
    Summerton, Jane
    Swedish National Road and Transport Research Institute.
    Åkerman, Jonas
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Elbilar och förnybara bränslen räcker inte.2014Inngår i: Dagens nyheter, ISSN 1101-2447Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 83.
    Apostolopoulou - Kalkavoura, Varvara
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Effects of Varying Sludge Quality on the Permeability of a Membrane Bioreactor2014Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This master thesis firstly includes a theory part describing, the conventional municipal wastewater treatment plant (WWTP) and especially the conventional activated sludge (CAS) process. As Stockholm municipality want to retrofit the current activated sludge system at Henriksdal into a membrane bioreactor (MBR), an extensive description of the MBR and its advantages and disadvantages are included.

    Fouling is considered a really important issue for the operation of an MBR since it reduces an MBR’s productivity over time. Therefore, description of the fouling mechanisms and the potential foulants is included as well as a description of the membrane cleaning procedures. Sludge composition is considered a very important parameter which contributes to membrane fouling and thus this master thesis aims to identify the effects of varying sludge quality on the membranes operation. Precipitation chemicals used for phosphorus chemical precipitation and especially ferrous sulphate which is examined in this master thesis are also affecting the sludge quality and the membranes operation.

    The report includes description of Henriksdal reningsverk and line 1 of the pilot MBR at Hammarby Sjöstadsverk where the experimental work was performed. The following chapter describes the experimental work performed in the laboratory including the determination of total suspended solids (TSS), volatile suspended solids (VSS), sludge volume index (SVI) and sludge’s filterability. The filterability was determined by performing the time to filter (TTF) method and the sludge filtration index (SFI) method. Furthermore, the samples were also examined in the optical microscope to determine their bulkiness and their filaments content. The iron content in the sludge was also measured from Eurofins Environment Testing Sweden AB.

    In the results section, the different parameters measured are illustrated in charts and they are compared to each other in order to define which factors contribute positively or negatively to the sludge’s filterability and thus affect the sludge quality and the membranes operation. The results indicate that SFI is a more reliable method for measuring filterability compared to TTF. Furthermore, the iron content in the sludge is proportional to the permeability as well as the filaments content observed during microscopy is proportional to the SFI or TTF. Finally, this master thesis includes recommendations for future research which basically include more analyses to identify the sludge biology and more samples taken for longer time periods. 

  • 84. Aronson, M.F.J.
    et al.
    La Sorte, F.A.
    Nilon, C.H.
    Katti, M.
    Goddard, M.A.
    Lepczyk, C.A.
    Warren, P.S.
    Williams, W.P.S.
    Cilliers, S.
    Clarkson, B.
    Dobbs, Cynnamon
    Dolan, R.
    Hedblom, M.
    Klotz, S.
    Louwe Kooijmans, Jip
    Kühn, I.
    MacGregor-Fors, I.
    McDonnell, Mark
    Mörtberg, Ulla
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Pyšek, P.
    Siebert, S.
    Sushinsky, J.
    Werner, Peter
    Winter, M.
    A global analysis of the impacts of urbanization on bird and plant diversity reveals key anthropogenic drivers2014Inngår i: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 281, nr 1780, s. 20133330-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Urbanization contributes to the loss of the world's biodiversity and the homogenization of its biota. However, comparative studies of urban biodiversity leading to robust generalities of the status and drivers of biodiversity in cities at the global scale are lacking. Here, we compiled the largest global dataset to date of two diverse taxa in cities: birds (54 cities) and plants (110 cities). We found that the majority of urban bird and plant species are native in the world's cities. Few plants and birds are cosmopolitan, the most common being Columba livia and Poa annua. The density of bird and plant species (the number of species per km2) has declined substantially: only 8% of native bird and 25% of native plant species are currently present compared with estimates of non-urban density of species. The current density of species in cities and the loss in density of species was best explained by anthropogenic features (landcover, city age) rather than by non-anthropogenic factors (geography, climate, topography). As urbanization continues to expand, efforts directed towards the conservation of intact vegetation within urban landscapes could support higher concentrations of both bird and plant species. Despite declines in the density of species, cities still retain endemic native species, thus providing opportunities for regional and global biodiversity conservation, restoration and education.

  • 85.
    Arregul, Ane
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    Innovative solutions for odours reduction from wastewater treatment.2011Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
  • 86. Arts, Jos
    et al.
    Faith-Ell, Charlotta
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik.
    New governance approaches for sustainable project delivery2012Inngår i: Transport Research Arena 2012, Elsevier, 2012, Vol. 48, s. 3239-3250Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Studies show that many infrastructure projects have problems to deliver sustainability commitments made earlier in the planning process. One problem is that many decisions influencing project design and environmental performance are made after the (formal) planning process and consent decision. Also, many parties are involved in project delivery and there is lack of information transfer (follow-up) from planning stages to construction and implementation. In addition, the effectiveness of project studies has been questioned (i.e. do project studies delivering their outcomes?). In international practice various approaches are adopted to overcome these problems. One approach is to move towards more collaborative relationships between various parties (governmental, private and public). Also, authorities and companies increasingly use procurement and contracting as an environmental policy instrument to further the environmental performance of projects (green procurement). Furthermore, new tools for securing sustainability commitments are increasingly used in infrastructure design and construction (e.g. rating tools such as CEEQUAL, BREEAM, LEED). The various approaches have developed independently but nevertheless seem to head in the same direction i.e. achieving more environmental sustainable outcomes of (infrastructure) projects. An important challenge is how these approaches can be combined to reinforce each other for more sustainable project delivery. Various relationships can be developed between the different 'tracks' of impact assessment, green procurement and partnering contracts in order to come to a more integrated approach. This paper aims at discussing and comparing different approaches for delivering sustainability in infrastructure projects. By integrating green procurement, partnering and sustainability declaration, an integrated approach could be developed in order to safeguard sustainable performance beyond the formal decision-making phase of infrastructure projects. This integrated approach would enable transfer of information, communication, learning from experience and adaptive environmental management.

  • 87.
    Arushanyan, Yevgeniya
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Environmental Impacts of ICT: Present and Future2016Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    ICT is developing rapidly and is playing an increasingly important role in society. High expectations are placed on ICT in relation to sustainable development. In order to provide basis for decision-making and ensure that ICT is used in the best possible way for enabling sustainable development, the sustainability impacts of ICT need to be studied.

    This thesis aims to provide new knowledge on the environmental impacts related to ICT, to explore the potential of ICT to contribute to sustainability, and discuss ways of assessing environmental impacts of ICT. In order to fulfill the aim a literature review of existing LCA studies of ICT was done, an LCA case study of printed and online media was performed, a methodological framework for sustainability assessment of scenarios was developed and then applied for environmental assessment of future ICT societies.

    The results show that manufacturing and use phase are the life cycle stages contributing the most to the ICT environmental impacts. For online newspapers online distribution and content production may give significant contribution to the overall impact. User behavior was observed to be crucial for the results of comparisons of ICT solutions with their traditional counterparts.

    The following key issues were concluded to influence the environmental risks and opportunities in future ICT societies: energy mix, economic conditions, life styles, technology, and environmental ambitions, incentives and regulation. The potential of ICT for sustainability is affected by these key issues.

    A new methodological framework (SAFS) was developed for the assessment of future scenarios (societal level). Life cycle assessment (LCA) was used for assessment on a product level. Application of both methods, their benefits, drawbacks, and challenges of assessment were discussed. Both types of assessments were concluded to be important to support decision-making.

  • 88.
    Arushanyan, Yevgeniya
    KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    LCA of ICT solutions: environmental impacts and challenges of assessment2013Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Information and communication technology (ICT) is playing an important role in modern society, contributing to economic growth and affecting society and people’s lifestyles. There are high expectations on ICT to contribute to sustainable development, e.g. through greenhouse gas emissions reductions. ICT solutions (ICT products and services) are often perceived as having low or no environmental impacts compared with conventional alternatives. In order to determine the potential of ICT to reduce environmental impacts, environmental assessments of ICT solutions compared with other alternatives are needed. A number of studies have already assessed the environmental impacts of individual ICT solutions and the ICT sector. However, more research is needed, covering different types of impacts (primary, secondary, rebound, etc.) in a variety of impact categories (e.g. climate change, ozone depletion, eutrophication, human and ecotoxicity, etc.). The findings then need to be systematised in order to identify hot-spots and draw generic conclusions. As the area is rather new and fast-developing, assessment methods need to be critically appraised in order to identify challenges and developments necessary for high quality assessments.

    This thesis aims to contribute to the knowledge on the direct life cycle environmental impacts of ICT solutions and to investigate and analyse the challenges of applying Life Cycle Assessment (LCA) as a tool for environmental assessment of ICT solutions. Two research questions: “What life cycle environmental impacts and their causes can be identified for ICT solutions?” and “What are the methodological challenges of assessing the ICT solutions using LCA?” were analysed by reviewing published LCAs on ICT solutions and conducting a case study of online and printed newspapers. The literature review helped identify hotspots in the life cycle of ICT solutions, draw generic conclusions concerning environmental impacts and their causes, and identify major challenges to LCA application. The case study assessed the environmental impacts of traditional and new media solutions and provided information on methodological challenges.

    The results show that impacts other than climate change potential and energy use are not well-studied in the ICT sector, creating a risk of possible sub-optimisation and problem shifting. Manufacturing and the use phase are concluded to be the most environmentally intense life cycle stages of ICT products in many studies. However, transportation and end-of-life treatment should not be omitted in the assessments, although their impacts appear lower, as uncertainty and lack of data might be a reason for underestimations.

    As ICT is under constant and rapid development, environmental assessment of ICT solutions faces challenges regarding e.g. data quality and availability; choice of data type; methodological choices (e.g. choice of functional unit, scope definition and allocation); and assumptions on user behaviour. These affect the final results and thus need to be carefully considered by LCA practitioners.

    The outcomes of this thesis can benefit practitioners and decision-makers, improving knowledge on the environmental impacts of ICT solutions and challenges in applying LCA for assessment of ICT solutions, and providing improved grounds for more informed decision-making. Areas for further research regarding methodology development and filling knowledge gaps are also identified.

  • 89.
    Arushanyan, Yevgeniya
    et al.
    Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Björklund, Anna
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Eriksson, Ola
    Finnveden, Göran
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Soderman, Maria Ljunggren
    Sundqvist, Jan-Olov
    Stenmarck, Asa
    Environmental Assessment of Possible Future Waste Management Scenarios2017Inngår i: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 10, nr 2, artikkel-id 247Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Waste management has developed in many countries and will continue to do so. Changes towards increased recovery of resources in order to meet climate targets and for society to transition to a circular economy are important driving forces. Scenarios are important tools for planning and assessing possible future developments and policies. This paper presents a comprehensive life cycle assessment (LCA) model for environmental assessments of scenarios and waste management policy instruments. It is unique by including almost all waste flows in a country and also allow for including waste prevention. The results show that the environmental impacts from future waste management scenarios in Sweden can differ a lot. Waste management will continue to contribute with environmental benefits, but less so in the more sustainable future scenarios, since the surrounding energy and transportation systems will be less polluting and also because less waste will be produced. Valuation results indicate that climate change, human toxicity and resource depletion are the most important environmental impact categories for the Swedish waste management system. Emissions of fossil CO2 from waste incineration will continue to be a major source of environmental impacts in these scenarios. The model is used for analyzing environmental impacts of several policy instruments including weight based collection fee, incineration tax, a resource tax and inclusion of waste in a green electricity certification system. The effect of the studied policy instruments in isolation are in most cases limited, suggesting that stronger policy instruments as well as combinations are necessary to reach policy goals as set out in for example the EU action plan on circular economy.

  • 90.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Ekener, Elisabeth
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Moberg, Asa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Coroama, Vlad C.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    A framework for sustainability assessment of ICT futures Scenarios and sustainability impacts of future ICT-societies2015Inngår i: PROCEEDINGS OF ENVIROINFO AND ICT FOR SUSTAINABILITY 2015, Atlantis Press , 2015, s. 1-9Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The rapid development of information and communication technology (ICT) has an influence on all societal sectors and can have both positive and negative consequences. To support ICT for sustainability (ICT4S), we need to learn when and how ICT can enable sustainable development. It is important to take into account all types of potential impacts environmental and social, direct and indirect. Looking at future ICT societies and their potential environmental and social implications is of special interest, as this can provide valuable knowledge for planning and policy-making today to enable ICT4S. A methodological framework for environmental and social assessment of future ICT societies with a consumption perspective was developed as a part of a joint project with researchers at KTH, ICT industry, municipality and county. The overall goal of the project was to develop five different future scenarios for Swedish ICT societies and to assess the risks and opportunities for environmental and social consequences in those scenarios. This paper presents the framework for environmental and social assessment of future scenarios and discusses the challenges experienced and lessons learned in the process of the framework development. The framework is aimed to deal with a broad and complex object and scope of assessment, the inherent uncertainty and data restrictions of future scenarios, and is applying qualitative analysis.

  • 91.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Ekener, Elisabeth
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Moberg, Åsa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik. Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Sustainability assessment framework for scenarios – SAFS2017Inngår i: Environmental impact assessment review, ISSN 0195-9255, E-ISSN 1873-6432, Vol. 63, s. 23-34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To address current challenges regarding sustainable development and support planning for this form of development, new learning about different possible futures and their potential sustainability implications is needed. One way of facilitating this learning is by combining the futures studies and sustainability assessment (SA) research fields. This paper presents the sustainability assessment framework for scenarios (SAFS), a method developed for assessing the environmental and social risks and opportunities of future scenarios, provides guidelines for its application and demonstrates how the framework can be applied. SAFS suggests assessing environmental and social aspects using a consumption perspective and a life cycle approach, and provides qualitative results. SAFS does not suggest any modelling using precise data, but instead offers guidelines on how to carry out a qualitative assessment, where both the process of assessing and the outcome of the assessment are valuable and can be used as a basis for discussion. The benefits, drawbacks and potential challenges of applying SAFS are also discussed in the paper. SAFS uses systems thinking looking at future societies as a whole, considering both environmental and social consequences. This encourages researchers and decision-makers to consider the whole picture, and not just individual elements, when considering different futures.

  • 92.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Ekener, Elisabeth
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Moberg, Åsa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Sustainability Assessment Framework for Scenarios - SAFSManuskript (preprint) (Annet vitenskapelig)
  • 93.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Ekener-Petersen, Elisabeth
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Finnveden, Göran
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Lessons learned: Review of LCAs for ICT products and services2014Inngår i: Computers in industry (Print), ISSN 0166-3615, E-ISSN 1872-6194, Vol. 65, nr 2, s. 211-234Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Application of information and communication technology (ICT) is often expected to result in decreased environmental impacts. Several studies have, however, also addressed the possibilities of negative impacts. It is therefore important to assess environmental impacts of ICT products and services. Life Cycle Assessment (LCA) is a tool for assessing the potential impacts of a product or service over the whole life-cycle, i.e. from raw material acquisition to waste management via production and use phases. The aim of this paper is to review LCA studies of ICT products and services, including a few Social Life Cycle Assessment (S-LCA) studies. Many of the studies have considered consumer products, such as computers and TVs. Other consumer products, such as game consoles and TV peripherals, as well as business products, e.g. related to networks, are however more rarely assessed. Manufacturing and use phase have the highest impact in the life cycle. Use phase seems to be the predominant in energy consumption and global warming for some ICT products but for others, especially energy efficient, low weight products, manufacturing may dominate. Rapid technological development is stressed by several authors as a source of variability of results, impacting the production processes and suppliers as well as the content and energy performance of the actual devices. In the future, conducting LCA on ICT, the research community needs to consider the limitations found in the studies conducted so far. It encompasses, among others, the need to address a broad spectrum of environmental impacts, including human and ecotoxicological impacts; modeling actual e-waste management, covering informal management when relevant; and considering user behavior in a realistic way, accounting for rebound and other indirect effects.

  • 94.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Moberg, Åsa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Coroama, Vlad C.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Ekener, Elisabeth
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Future ICT Societies – Environmental Opportunities and ChallengesManuskript (preprint) (Annet vitenskapelig)
  • 95.
    Arushanyan, Yevgeniya
    et al.
    Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Moberg, Åsa
    Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Nors, Minna
    VTT Technical Research Centre of Finland.
    Hohenthal, Catharina
    VTT Technical Research Centre of Finland.
    Media content provided on different platforms –Environmental performance of online and printed versions of Alma Medianewspapers.2014Inngår i: Journal of Print and Media Technology Research, ISSN 2223-8905, Vol. 3, nr 1, s. 7-31Artikkel i tidsskrift (Fagfellevurdert)
  • 96.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Moberg, Åsa
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms). Skolan för datavetenskap och kommunikation (CSC), Centra, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC.
    Nors, Minna
    VTT Technical Research Centre of Finland.
    Hohenthal, Catharina
    VTT Technical Research Centre of Finland.
    Pihkola, Hanna
    VTT Technical Research Centre of Finland.
    Environmental Assessment of E-media Solutions Challenges Experienced in Case Studies of Alma Media Newspapers2014Inngår i: PROCEEDINGS OF THE 2014 CONFERENCE ICT FOR SUSTAINABILITY, Atlantis Press , 2014, s. 11-19Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The rapid and continuous development of information and communication technology (ICT) in society today is providing new means for various societal activities. To facilitate that new ICT solutions reduce environmental impacts and bring social improvements the potential impacts of those new solutions should be assessed. One way of making environmental assessments is Life Cycle Assessment (LCA). This paper presents and discusses challenges in assessing, comparing, communicating and acting on the results of an LCA of traditional media products and of new ICT solutions for media products, based on case studies of three newspapers in their printed and online versions. The case studies revealed the complexity in assessment and comparison of online and printed newspapers due to differences in functions and characteristics, choice and availability of data (specific and generic data, data gaps and quality), methodological choices (functional unit, allocation, scope) and assumptions on reader profile. Often no single answer can be given regarding the best option from an environmental perspective, leading to challenges in communicating the results to different stakeholders. A particular challenge is how to combine easily communicated messages with robust, transparent background information.

  • 97.
    Arushanyan, Yevgeniya
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Moberg, Åsa
    KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centre for Sustainable Communications, CESC. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Miljöstrategisk analys (fms).
    Nors, Minna
    VTT Technical Research Centre of Finland.
    Hohenthal, Catharina
    VTT Technical Research Centre of Finland.
    Pihkola, Hanna
    VTT Technical Research Centre of Finland.
    Environmental assessment of new media solutions: challenges experienced in case studies of Alma Media newspapers.Artikkel i tidsskrift (Fagfellevurdert)
  • 98.
    Arvanitis, Konstantinos
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    MACROALGAE IN THE BIOREFINERY: A SUBSTANCE FLOW ANALYSIS AND ENVIRONMENTAL ASSESSMENT OF AN EXTRACTION PROCESS OF THE MAJOR COMPONENTS IN SACCHARINA LATISSIMA2016Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    A turn to more sustainable resources has lead the research during the last decades to algae. Algae is a resource that has been utilized for thousands of years offering a variety of possibilities. Nevertheless modern technology were able to uncover algae’s great potential and pave the way for alternative uses such as biofuel and biomaterial production. Towards that direction, ‘Seafarm’ aims in utilizing algae in the most efficient and sustainable way. For that purpose various steps have been established, including the biorefinery step which entail among other the extraction of carbohydrates from brown algae.

    The current thesis is based on an extraction of carbohydrates from Saccharina latissima, a brown algae species, which was developed by Viktor Öberg during his master thesis at KTH. The aim of this work is to assist in the scaling up of that laboratory process by analyzing the basic steps and substances of the process, investigating its environmental performance and identifying improvement areas for theoretical optimization. The results of the aforementioned analysis include a substance flow analysis which reveals the basic steps of the process and constitute the basis for further analysis. The second step examines the environmental performance of the process based on the chemical selection. Hence the results are a risk assessment of chemicals with performance indicators for each chemical as well as the whole process. The final part provides a theoretical optimization of the process based on literature studies where the recommendations are divided in production optimization and environmental performance.

    The above results constitute the basis of the analysis of the process and sets the foundations for scaling up the process at an industrial level. The current analysis in combination with an energy and economic assessment could be used for the designing of the process and its integration in the biorefinery. 

  • 99.
    Arvidsson, Ebba
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
    Jämförelse ur ett miljöperspektiv av jeans gjorda av konventionell bomull och ekologisk bomull med hjälp av LCA: En fallstudie genomförd i samarbete med J.Lindeberg2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Jeans is a clothing segment that has had a lasting popularity over many years. The intenseproduction of jeans has led to a discussion on the environmental effects that the jeanscontribute to. Cotton, which is the main material used to make jeans, is a water and chemicalintensive crop which today is involved in discussions on whether there are other moresustainable alternatives to conventional cotton. Organically grown cotton does not usesynthetic fertilizers, pesticides or growth regulators, which has made many people andcompanies believe it is a more sustainable alternative to conventionally grown cotton.

    J.Lindeberg is a Swedish fashion company which produce jeans made from bothconventional and organic cotton today, however, they have a goal to increase the use oforganic cotton to decrease the negative environmental effects from the jeans. Therefore, thismaster thesis aims to determine if jeans made from conventional or organic cotton has ahigher environmental performance. This is done by taking environmental effects through theentire life cycle into account by making a life cycle assessment of two pairs of jeans made byJ.Lindeberg, Jay Devout made from conventional cotton and Jay Solid Stretch made fromorganic cotton. To reach the aim, three research questions are formulated:

    • Which style of jeans, Jay Devout or Jay Solid Stretch, has the highest potential lifecycle environmental performance?

    • Will the change from conventional cotton to organic cotton in the jeans align with thesustainability goals set by J.Lindeberg?

    • Are there any possible risks or trade-offs associated with the shift from conventionalto organic cotton?

    The LCA was performed with data from four supplying companies of J.Lindeberg and theresults show that Jay Devout, made from conventional cotton, have a higher environmentalperformance when including the entire life cycle. However, the impacts from the productionis not dependent on the cotton being conventional or organic and therefore, to conclude ifJ.Lindeberg is making the right choice by changing from conventional to organic cotton, thecomparison should only include the cotton cultivation phase. When comparing the cottoncultivation phase of the conventional and organic systems, the results show that the organiccotton has a higher environmental performance. This suggests that the change fromconventional cotton to organic cotton will in fact contribute to lower negative environmentalimpacts. Furthermore, the change from conventional to organic cotton aligns with most of thesustainability goals set by J.Lindeberg.

    Jay Devout, made from conventional cotton, had a higher negative impact on most of theimpact categories connected to toxicity, which supports the choice of changing to organiccotton, since J.Lindeberg has a goal to reduce the chemicals in their products. Overall, thetwo jeans performed differently on different impact categories, however a similarity is thatthe production phase is a hotspot for both jeans. There is a risk of trade-offs regarding theimpact categories water consumption, global warming and fossil resource scarcity whenincluding all phases of the life cycle, and to avoid this, increased transparency andtraceability is required in the supply chain to enable thorough sustainability work. Arecommendation is to demand the use of renewable sources for electricity production in allsteps of the life cycle, since this decrease the environmental impacts, especially from theproduction phase.

  • 100.
    Arvidsson, Ebba
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Forsberg, Sofia
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Ögren, Sofie
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Industriell ekologi.
    Sustainability Practices on University Campuses: Case Study of Zhejiang University and KTH Royal Institute of Technology2017Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    This report provides an analysis of the energy consumption and a study of the sustainabilitywork regarding buildings at Zhejiang University, ZJU, and the Royal Institute of Technology,KTH. Three students from KTH performed a field study at ZJU in Hangzhou, China, in theyear of 2017.

    By interviewing actors at KTH and ZJU and studying the differences in conditions, policiesand regulations the results shows how the sustainability work regarding buildingsdifferentiates between the universities. The result of the study shows that both universitieshave national goals, policies and regulations they have to follow that give different incentivesto encourage sustainable development. KTH and Sweden also needs to consider laws andpolicies of the European Union, EU. KTH and Akademiska Hus, AH, have sustainabilitygoals of their own while ZJU only have provincial goals in addition to the national. If ZJUwants to be a leading university in the field of sustainable development, the authors suggestthat they make sustainability goals of their own.

    AH is the property owner at KTH campus and they decide what kind of energy sources to usein their buildings. They cooperate with KTH to establish the sustainability work while ZJUowns all their buildings, which makes them in charge of the sustainability work themselves.To evaluate properties in terms of sustainability, KTH uses Miljöbyggnad certification andZJU is using the Three Star System.

    The authors have concluded that the difference in prerequisites between the two countriesmakes it difficult for ZJU to use the same amount of renewable energy in their buildings asKTH. If ZJU would like to use only renewables they need to produce it themselves. ZJUmonitors 150 of their 500 buildings, while AH monitors all buildings at KTH. The authorsrecommend that ZJU put sensors in all their buildings to monitor the energy consumption inorder to get a fair image of the situation in terms of energy use.

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