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  • 1.
    Jin, Yanghao
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Liu, Sirui
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Wang, Shule
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process. Jiangsu Province Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No. 16, Suojin Five Village, Nanjing, 210042, China, No. 16, Suojin Five Village; International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, China, Longpan Road 159.
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process. Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585 Singapore.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Tang, Chuchu
    School of Design and Art, Hunan Institute of Technology, 421001 Hengyang, China; Program of Visual Arts, Faculty of Creative Arts, University of Malaya, 50603 Kuala Lumpur, Malaysia.
    Hedenqvist, Mikael S.
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.
    Lu, Xincheng
    Jiangsu Province Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No. 16, Suojin Five Village, Nanjing, 210042, China, No. 16, Suojin Five Village; International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, China, Longpan Road 159.
    Kawi, Sibudjing
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585 Singapore.
    Wang, Chi Hwa
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585 Singapore.
    Jiang, Jianchun
    Jiangsu Province Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No. 16, Suojin Five Village, Nanjing, 210042, China, No. 16, Suojin Five Village; International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, China, Longpan Road 159.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    A novel three-stage ex-situ catalytic pyrolysis process for improved bio-oil yield and quality from lignocellulosic biomass2024In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 295, article id 131029Article in journal (Refereed)
    Abstract [en]

    This study aims to improve the quality and yield of bio-oil produced from ex-situ catalytic pyrolysis of lignocellulosic biomass (sawdust) using a combination of stage catalysts with Al-MCM-41, HZSM-5, and ZrO2. The research employed various methods, including thermogravimetric analysis (TGA), differential scanning calorimetry, bench-scale experiments, and process simulations to analyze the kinetics, thermodynamics, products, and energy flows of the catalytic upgrading process. The introduction of ZrO2 enhances the yield of monoaromatic hydrocarbons (MAHs) in heavy organics. Compared with the dual-catalyst case, the MAHs yield escalates by approximately 344% at a catalyst ratio of 1:3:0.25. Additionally, GC-MS data indicate that the incorporation of ZrO2 promotes the deoxygenation reaction of the guaiacol compound and the oligomerization reactions of PAHs. The integration of ZrO2 as the third catalyst enhances the yield of heavy organics significantly, achieving 16.85% at a catalyst ratio of 1:3:1, which increases by nearly 35.6% compared to the dual-catalyst case. Also, the addition of ZrO2 as the third catalyst enhanced the energy distribution in heavy organics. These findings suggest that the combination of these catalysts improves the fuel properties and yields of the bio-oil.

  • 2.
    Jin, Yanghao
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Hanmin
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Asfaw, Habtom Desta
    Uppsala Univ, Dept Chem, Angstrom Lab, POB 539,Lagerhyddsvagen 1, S-75121 Uppsala, Sweden..
    Gond, Ritambhara
    Uppsala Univ, Dept Chem, Angstrom Lab, POB 539,Lagerhyddsvagen 1, S-75121 Uppsala, Sweden..
    Younesi, Reza
    Uppsala Univ, Dept Chem, Angstrom Lab, POB 539,Lagerhyddsvagen 1, S-75121 Uppsala, Sweden..
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    From Waste Biomass to Hard Carbon Anodes: Predicting the Relationship between Biomass Processing Parameters and Performance of Hard Carbons in Sodium-Ion Batteries2023In: Processes, ISSN 2227-9717, Vol. 11, no 3, article id 764Article, review/survey (Refereed)
    Abstract [en]

    Sodium-ion batteries (SIBs) serve as the most promising next-generation commercial batteries besides lithium-ion batteries (LIBs). Hard carbon (HC) from renewable biomass resources is the most commonly used anode material in SIBs. In this contribution, we present a review of the latest progress in the conversion of waste biomass to HC materials, and highlight their application in SIBs. Specifically, the following topics are discussed in the review: (1) the mechanism of sodium-ion storage in HC, (2) the HC precursor's sources, (3) the processing methods and conditions of the HCs production, (4) the impact of the biomass types and carbonization temperature on the carbon structure, and (5) the effect of various carbon structures on electrochemical performance. Data from various publications have been analyzed to uncover the relationship between the processing conditions of biomass and the resulting structure of the final HC product, as well as its electrochemical performance. Our results indicate the existence of an ideal temperature range (around 1200 to 1400 degrees C) that enhances the formation of graphitic domains in the final HC anode and reduces the formation of open pores from the biomass precursor. This results in HC anodes with high storage capacity (>300 mAh/g) and high initial coulombic efficiency (ICE) (>80%).

  • 3.
    Jin, Yanghao
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Yang, Hanmin
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Guo, Shuo
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Gond, Ritambhara
    Uppsala Univ, Dept Chem, Angstrom Lab, Struct Chem, Uppsala, Sweden..
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Carbon and H-2 recoveries from plastic waste by using a metal-free porous biocarbon catalyst2023In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 404, article id 136926Article in journal (Refereed)
    Abstract [en]

    Carbon and H2 recoveries from plastic waste enable high value-added utilizations of plastic waste while mini-mizing its GHG emissions. The objective of this study is to explore the use of a metal-free biocarbon catalyst for waste plastic pyrolysis and in-line catalytic cracking to produce H2-rich gases and carbon. The results show that the biocarbon catalyst exhibits a good catalytic effect and stability for various plastic wastes. Increasing the C/P ratio from 0 to 2, induce an increase in the conversion rate of C and H in plastics to carbon and H2 from 57.1% to 68.7%, and from 22.7% to 53.5%, respectively. Furthermore, a carbon yield as high as 580.6 mg/gplastic and an H2 yield as high as 68.6 mg/gplastic can be obtained. The hierarchical porous structure with tortuous channels of biocarbon extends the residence time of pyrolysis volatiles in the high-temperature catalytic region and thereby significantly promotes cracking reactions.

  • 4.
    Shi, Ziyi
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jin, Yanghao
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Hanmin
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Gond, Ritambhara
    Department of Chemistry-Ångström Laboratory, Uppsala University, Box 538, Lägerhyddsvägen 1, 75121, Uppsala, Sweden.
    Subasi, Yaprak
    Department of Chemistry-Ångström Laboratory, Uppsala University, Box 538, Lägerhyddsvägen 1, 75121, Uppsala, Sweden.
    Asfaw, Habtom Desta
    Department of Chemistry-Ångström Laboratory, Uppsala University, Box 538, Lägerhyddsvägen 1, 75121, Uppsala, Sweden.
    Younesi, Reza
    Department of Chemistry-Ångström Laboratory, Uppsala University, Box 538, Lägerhyddsvägen 1, 75121, Uppsala, Sweden.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Bio-based anode material production for lithium–ion batteries through catalytic graphitization of biochar: the deployment of hybrid catalysts2024In: Scientific Reports, E-ISSN 2045-2322, Vol. 14, no 1, article id 3966Article in journal (Refereed)
    Abstract [en]

    Producing sustainable anode materials for lithium-ion batteries (LIBs) through catalytic graphitization of renewable biomass has gained significant attention. However, the technology is in its early stages due to the bio-graphite's comparatively low electrochemical performance in LIBs. This study aims to develop a process for producing LIB anode materials using a hybrid catalyst to enhance battery performance, along with readily available market biochar as the raw material. Results indicate that a trimetallic hybrid catalyst (Ni, Fe, and Mn in a 1:1:1 ratio) is superior to single or bimetallic catalysts in converting biochar to bio-graphite. The bio-graphite produced under this catalyst exhibits an 89.28% degree of graphitization and a 73.95% conversion rate. High-resolution transmission electron microscopy (HRTEM) reveals the dissolution–precipitation mechanism involved in catalytic graphitization. Electrochemical performance evaluation showed that the trimetallic hybrid catalyst yielded bio-graphite with better electrochemical performances than those obtained through single or bimetallic hybrid catalysts, including a good reversible capacity of about 293 mAh g−1 at a current density of 20 mA/g and a stable cycle performance with a capacity retention of over 98% after 100 cycles. This study proves the synergistic efficacy of different metals in catalytic graphitization, impacting both graphite crystalline structure and electrochemical performance.

  • 5.
    Shi, Ziyi
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Jin, Yanghao
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Svanberg, Rikard
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Minidis, Alexander B. E.
    RISE Res Inst Sweden Bioecon & Hlth, Chem Proc & Pharmaceut Dev, Forskargatan 20J, SE-15136 Södertälje, Sweden..
    Ann-Sofi, Kindstedt Danielsson
    RISE Res Inst Sweden Bioecon & Hlth, Chem Proc & Pharmaceut Dev, Forskargatan 20J, SE-15136 Södertälje, Sweden..
    Kjeldsen, Christian
    Topsoe AS, Haldor Topsoe Alle 1, DK-2800 Lyngby, Denmark..
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Continuous catalytic pyrolysis of biomass using a fluidized bed with commercial-ready catalysts for scale-up2023In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 273, article id 127288Article in journal (Refereed)
    Abstract [en]

    The use of catalytic fast pyrolysis (CFP) of biomass to produce high-quality bio-oils as potential substitutes for conventional fuels plays an essential role in the decarbonization of the world. In this study, continuous CFP tests of sawdust using three commercial-ready catalysts were performed. The overall objective is to screen appropriate catalysts and catalyst loading amounts for further commercialization and upgrading by evaluating the quality of the organic fraction bio-oils and clarifying the relationship between the hydrogen-to-carbon atomic effective (H/ Ceff) ratio and bio-oil yield. The results displayed that, owing to a cracking effect of the catalyst, all catalytic cases had higher H/Ceff ratios and larger relative area percentages of hydrocarbons determined by NMR. Thermogravimetric analysis reveals that, compared to non-catalytic bio-oils, catalytic bio-oils showed more distillates in the diesel range. Increasing the catalyst-loading amount also showed the same effect. Overall, all bio-oil products from catalytic cases had H/Ceff ratios higher than 0.6, indicating the production of promising oil for hydrodeoxygenation. By analyzing and fitting the data from this work and comparing with the literature, it could be concluded that its yield would decrease as the bio-oil product quality increases (the H/Ceff ratios increase).

  • 6.
    Wang, Shule
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China.;Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, 16 Suojin F Village, Nanjing 210042, Peoples R China..
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Jin, Yanghao
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Li, Yan
    Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China.;Wageningen Univ, Soil Chem & Chem Soil Qual Grp, POB 47, NL-6700 AA Wageningen, Netherlands..
    Tang, Chuchu
    Hunan Inst Technol, Sch Design & Art, Hengyang 421001, Peoples R China..
    Mu, Wangzhong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Structures.
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jiang, Jianchun
    Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China.;Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, 16 Suojin F Village, Nanjing 210042, Peoples R China..
    Jönsson, Pär Göran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    A machine learning model to predict the pyrolytic kinetics of different types of feedstocks2022In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 260, p. 115613-, article id 115613Article in journal (Refereed)
    Abstract [en]

    An in-depth knowledge of pyrolytic kinetics is vital for understanding the thermal decomposition process. Numerous experimental studies have investigated the kinetic performance of the pyrolysis of different raw materials. An accurate prediction of pyrolysis kinetics could substantially reduce the efforts of researchers and decrease the cost of experiments. In this work, a model to predict the mean values of model-free activation energies of pyrolysis for five types of feedstocks was successfully constructed using the random forest machine learning method. The coefficient of determination of the fitting result reached a value as high as 0.9964, which indicates significant potential for making a quick initial pyrolytic kinetic estimation using machine learning methods. Specifically, from the results of a partial dependence analysis of the lignocellulose-type feedstock, the atomic ratios of H/C and O/C were found to have negative correlations with the pyrolytic activation energies. However, the effect of the ash content on the activation energy strongly depended on the organic component species present in the lignocellulose feedstocks. This work confirms the possibility of predicting model-free pyrolytic activation energies by utilizing machine learning methods, which can improve the efficiency and understanding of the kinetic analysis of pyrolysis for biomass and fossil investigations.

  • 7.
    Wang, Shule
    et al.
    Jiangsu Province Key Laboratory of Biomass Energy and Materials, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), 210042, Nanjing, China; Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, 210037, Nanjing, China.
    Wang, Yiying
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Sun, Kang
    Jiangsu Province Key Laboratory of Biomass Energy and Materials, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), 210042, Nanjing, China; Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, 210037, Nanjing, China.
    Wen, Yuming
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
    Niedzwiecki, Lukasz
    Department of Energy Conversion Engineering, Wroclaw University of Science and Technology, 27 wybrzeże Stanisława Wyspiańskiego st. 50-370, Wroclaw, Poland; Energy Research Centre, Centre for Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 708 00, Ostrava, Poruba, Czech Republic.
    Pan, Ruming
    School of Energy Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China; Institut de Mécanique des Fluides de Toulouse (IMFT) - Université de Toulouse, CNRS-INPT-UPS, 31400, Toulouse, France.
    Xu, Yongdong
    Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs, China Agricultural University, 100083, Beijing, China.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jagodzińska, Katarzyna
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Aragon-Briceno, Christian
    Department of Industry and Energy, CIRCE-Research Centre for Energy Resources and Consumption, 50018, Zaragoza, Spain.
    Tang, Chuchu
    Faculty of Creative Arts, University of Malaya, 50603, Kuala Lumpur, Malaysia.
    Onsree, Thossaporn
    Department of Chemical Engineering, University of South Carolina, 301 Main St, Columbia, SC, 29208, USA.
    Tippayawong, Nakorn
    Department of Mechanical Engineering, Chiang Mai University, 239 Huay Kaew Rd., Muang District, Chiang Mai, 50200, Thailand.
    Pawlak-Kruczek, Halina
    Department of Energy Conversion Engineering, Wroclaw University of Science and Technology, 27 wybrzeże Stanisława Wyspiańskiego st. 50-370, Wroclaw, Poland, 27 wybrzeże Stanisława Wyspiańskiego st. 50-370.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jiang, Jianchun
    Jiangsu Province Key Laboratory of Biomass Energy and Materials, National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), 210042, Nanjing, China; Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, 210037, Nanjing, China.
    Kawi, Sibudjing
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
    Wang, Chi Hwa
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
    Van Krevelen diagrams based on machine learning visualize feedstock-product relationships in thermal conversion processes2023In: Communications Chemistry, E-ISSN 2399-3669, Vol. 6, no 1, article id 273Article in journal (Refereed)
    Abstract [en]

    Feedstock properties play a crucial role in thermal conversion processes, where understanding the influence of these properties on treatment performance is essential for optimizing both feedstock selection and the overall process. In this study, a series of van Krevelen diagrams were generated to illustrate the impact of H/C and O/C ratios of feedstock on the products obtained from six commonly used thermal conversion techniques: torrefaction, hydrothermal carbonization, hydrothermal liquefaction, hydrothermal gasification, pyrolysis, and gasification. Machine learning methods were employed, utilizing data, methods, and results from corresponding studies in this field. Furthermore, the reliability of the constructed van Krevelen diagrams was analyzed to assess their dependability. The van Krevelen diagrams developed in this work systematically provide visual representations of the relationships between feedstock and products in thermal conversion processes, thereby aiding in optimizing the selection of feedstock and the choice of thermal conversion technique.

  • 8.
    Wang, Shule
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Niedzwiecki, Lukasz
    Wroclaw Univ Sci & Technol, Wybrzeze Stanislawa Wyspianskiego 27, PL-50370 Wroclaw, Poland..
    Baranowski, Marcin
    Wroclaw Univ Sci & Technol, Wybrzeze Stanislawa Wyspianskiego 27, PL-50370 Wroclaw, Poland..
    Czerep, Michal
    Wroclaw Univ Sci & Technol, Wybrzeze Stanislawa Wyspianskiego 27, PL-50370 Wroclaw, Poland..
    Mu, Wangzhong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Kruczek, Halina Pawlak
    Wroclaw Univ Sci & Technol, Wybrzeze Stanislawa Wyspianskiego 27, PL-50370 Wroclaw, Poland..
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Effect of hydrothermal carbonization pretreatment on the pyrolysis behavior of the digestate of agricultural waste: A view on kinetics and thermodynamics2022In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 431, p. 133881-, article id 133881Article in journal (Refereed)
    Abstract [en]

    Anaerobic digestion is the most promising disposal methods to treat organic waste. Also, a feasible management is necessary for the resulted digestate. Hydrothermal carbonization (HTC) combination with pyrolysis could be a proper solution to use for the treatment of digestate. In this study, the effect of an HTC on the pyrolysis of the digestate of agricultural waste (AWD) was investigated, focusing on the kinetic and thermodynamic aspects. Three model-free methods, including Friedman, KAS, and OFW methods, were used to evaluate the kinetic performance of the total and pseudo pyrolytic reactions of AWD and its hydrochar. Furthermore, kinetic predictions were made to provide more information for further studies. It was found that the HTC treatment decreased the activation energy ranges of the pyrolysis of AWD from 182.9-274.43 kJ/mol to 144.59-205.20 kJ/mol by using the Friedman method. For a more thorough understanding of the effect of HTC treatment on the pyrolysis of AWD, the pyrolysis reactions of AWD and its hydrochar were divided into two pseudoreactions using the Fraser-Suzuki deconvolution method. The mean activation energy of the deduced pseudo 2 pyrolytic reaction of hydrochar was 175.64 kJ/mol, which was 28.11 kJ/mol less than that of AWD. In addition, the Delta H(double dagger )values of the pseudo 2 reactions of AWD and its hydrochar were 197.97 and 169.68 kJ/mol, respectively. The results of kinetic isothermal predictions suggested that the peak temperature for the further research and application of the pyrolysis of AWD and its hydmchar should not be lower than 450 degrees C.

  • 9.
    Wang, Shule
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Jönsson, Pär Göran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. KTH Royal Inst Technol, Dept Mat Sci & Engn, Brinellvagen 23, S-11428 Stockholm, Sweden..
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Novel carbon-negative methane production via integrating anaerobic digestion and pyrolysis of organic fraction of municipal solid waste2022In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 252, p. 115042-, article id 115042Article in journal (Refereed)
    Abstract [en]

    The use of bioenergy with carbon capture and storage (BECCS) is vital to reaching the desired climate goals. This study proposed a novel process combining anaerobic digestion, pyrolysis, catalytic reforming and methanation (APRM) to produce biomethane and to capture carbon emission from the organic fraction of municipal solid waste (OFMSW). The evaluation of the process was conducted by using modelling software and techno-economic analysis. The process modelling and evaluation result showed that 151.4 kg CH4 and 355.64 kg stored carbon emission can be produced from 1 ton dry matter of OFMSW with an energy efficiency of 0.40. 6.74 MJ electricity was required to capture 1 kg of CO2 via the proposed process. The energy balance of the pyrolysis reaction was investigated. The sensitivities of the pyrolysis temperatures, dewatering technologies and conversion of catalytic reforming on the process performance were analyzed. The result also indicated a positive net profit when using the APRM process to treat the OFMSW based on the calculation of operating expenses and revenue, when the CO2 negativity can be sold as commodity.

  • 10.
    Wang, Shule
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Novel carbon-negative methane production via integrating anaerobic digestion and pyrolysis of organic fraction of municipal solid waste2021Manuscript (preprint) (Other academic)
    Abstract [en]

    The use of bioenergy with carbon capture and storage (BECCS) is vital to reaching the desired climate goals. This study proposed a novel process combining anaerobic digestion, pyrolysis, catalytic reforming and methanation (APRM) to produce biomethane and to capture carbon emission from the organic fraction of municipal solid waste (OFMSW). The evaluation of the process was conducted by using modelling software and techno-economic analysis. The process modelling and evaluation result showed that 151.4 kg CH4 and 355.64 kg stored carbon emission can be produced from 1 ton dry matter of OFMSW with an energy efficiency of 0.40. 6.74 MJ electricity was required to capture 1 kg of CO2 via the proposed process. The energy balance of the pyrolysis reaction was investigated. The sensitivities of the pyrolysis temperatures, dewatering technologies and conversion of catalytic reforming on the process performance were analyzed. The result also indicated a positive net profit when using the APRM process to treat the OFMSW based on the calculation of operating expenses and revenue, when the CO2 negativity can be sold as commodity.

  • 11.
    Wang, Shule
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China.;Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, 16 Suojin Five Village, Nanjing 210042, Peoples R China.;.
    Yang, Hanmin
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. KTH Royal Inst Technol, Dept Mat Sci & Engn, Brinellvagen 23, S-11428 Stockholm, Sweden..
    Wen, Yuming
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Jiang, Jianchun
    Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China.;Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, 16 Suojin Five Village, Nanjing 210042, Peoples R China..
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Renewable hydrogen production from the organic fraction of municipal solid waste through a novel carbon-negative process concept2022In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 252, article id 124056Article in journal (Refereed)
    Abstract [en]

    Bioenergy with carbon capture and storage (BECCS) is one of the prevailing negative carbon emission technologies. Ensuring a hydrogen economy is essential to achieving the carbon-neutral goal. In this regard, the present study contributed by proposing a carbon negative process for producing high purity hydrogen from the organic fraction of municipal solid waste (OFMSW). This integrated process comprises anaerobic digestion, pyrolysis, catalytic reforming, water-gas shift, and pressure swing adsorption technologies. By focusing on Sweden, the proposed process was developed and evaluated through sensitivity analysis, mass and energy balance calculations, techno-economic assessment, and practical feasibility analysis. By employing the optimum operating conditions from the sensitivity analysis, 72.2 kg H2 and 701.47 kg negative CO2 equivalent emissions were obtained by treating 1 ton of dry OFMSW. To achieve these results, 6621.4 MJ electricity and 325 kg of steam were utilized during this process. Based on this techno-economic assessment of implementing the proposed process in Stockholm, when the negative CO2 equivalent emissions are recognized as income, the internal rate of return and the discounted payback period can be obtained as 26% and 4.3 years, respectively. Otherwise, these values will be 13% and 7.2 years.

  • 12.
    Wen, Yuming
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Wang, Shule
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
    Mu, Wangzhong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Structures.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Pyrolysis of raw and anaerobically digested organic fractions of municipal solid waste: Kinetics, thermodynamics, and product characterization2021In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 415, article id 129064Article in journal (Refereed)
    Abstract [en]

    Treating the solid residue after anaerobic digestion (AD) of the organic fraction of municipal solid waste (OFMSW) is currently a challenge. Here, pyrolysis is a promising way of recovering energy and materials from these solid residues. Thus, the objective of this study was to investigate the pyrolysis performance of these solid residues. The effect of AD on the pyrolysis of OFMSW was also studied. Thermogravimetry (TG), differential thermal analysis (DTA), and bench-scale pyrolysis experiments were performed by using OFMSW and anaembically digested OFMSW. Mathematical deconvolution analysis (MDA), model-free methods, and model-based methods were applied to study the kinetics. Thereafter, thermodynamic parameters were estimated based on the deduced kinetic results. The char, liquid, and permanent gas products from bench-scale experiments were characterized. The pyrolysis results show that the activation energies of the pseudoreactions of OFMSW are higher than those of the corresponding pseudoreactions of digestate. Moreover, the entropy reduction for digestate is larger than that for OFMSW. The characterization results of the products from the bench-scale experiments show that the interactions among feedstock components (lipids, lignocellulose, and proteins) during pyrolysis are enhanced by the application of AD. However, the pyrolysis yields of both heavy organics and gas are inhibited by the application of AD, while the char yield shows the opposite trend.

  • 13.
    Wen, Yuming
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Wang, Shule
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process. Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Int Innovat Ctr Forest Chem & Mat, Longpan Rd 159, Nanjing 210037, Peoples R China.; Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, 16 Suojin Five Village, Nanjing 210042, Peoples R China.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Jin, Yanghao
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Thomas, Jean-Baptiste
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Water and Environmental Engineering.
    Azzi, Elias Sebastian
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Water and Environmental Engineering.
    Franzén, Daniel
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Water and Environmental Engineering.
    Gröndahl, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Water and Environmental Engineering.
    Martin, Andrew R.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Tang, Chuchu
    Hunan Inst Technol, Sch Design & Art, Hengyang 421001, Peoples R China..
    Mu, Wangzhong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Structures.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Pyrolysis of engineered beach-cast seaweed: Performances and life cycle assessment2022In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 222, article id 118875Article in journal (Refereed)
    Abstract [en]

    The blooming of beach-cast seaweed has caused environmental degradation in some coastal regions. Therefore, a proper treating and utilizing method of beach-cast seaweed is demanded. This study investigated the potential of producing power or biofuel from pyrolysis of beach-cast seaweed and the effect of the ash-washing process. First, the raw and washed beach-cast seaweeds (RS and WS) were prepared. Thereafter, thermogravimetric analysis (TG), bench-scale pyrolysis experiment, process simulation, and life cycle assessment (LCA) were conducted. The TG results showed that the activation energies of thermal decomposition of the main organic contents of RS and WS were 44.23 and 58.45 kJ/mol, respectively. Three peak temperatures of 400, 500, and 600 degrees C were used in the bench-scale pyrolysis experiments of WS. The 600 degrees C case yielded the most desirable gas and liquid products. The bench-scale pyrolysis experiment of RS was conducted at 600 degrees C as well. Also, an LCA was conducted based on the simulation result of 600 degrees C pyrolysis of WS. The further process simulation and LCA results show that compare to producing liquid biofuel and syngas, a process designed for electricity production is most favored. It was estimated that treating 1 ton of dry WS can result in a negative cumulative energy demand of -2.98 GJ and carbon emissions of -790.89 kg CO2 equivalence.

  • 14.
    Wen, Yuming
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Wang, Shule
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Niedzwiecki, Lukasz
    Aragon-Briceno, Christian
    Tang, Chuchu
    Pawlak-Kruczek, Halina
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    H2-rich syngas production from pyrolysis of agricultural waste digestate coupled with the hydrothermal carbonization process2022In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 269, p. 116101-116101, article id 116101Article in journal (Refereed)
    Abstract [en]

    A novel process to produce a H2-rich syngas from a high moisture-containing agricultural waste digestate is proposed. This process combines the use of hydrothermal carbonization (HTC), dewatering, pyrolysis, and catalytic reforming. Due to the feature of the high moisture content in the digestate, the effect of the HTC and dewatering on the process performance is of interest, and four scenarios were considered. Furthermore, three pyrolytic temperatures were chosen to understand the effect of pyrolysis conditions on the produced H2-rich syngas. A life cycle assessment was conducted to investigate the environmental impact of the proposed process. Results show that the application of HTC technology, increases the process efficiency, produces less syngas from one ton of digestate, lowers the cumulative energy demand and the negative carbon emissions. When the dewatering technology is used, the syngas yield is promoted but the H2 concentration in the syngas is reduced. The H2 to CO molar ratio reaches the maximum value of 9.2 when using a 450 ˚C pyrolysis temperature, by only using HTC. When the combining process of HTC and dewatering is used, it results in the highest process efficiency, but the smallest relative negative CO2 equivalent emissions by treating one ton of dry digestate.

  • 15.
    Yang, Hanmin
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Sun, Yunjuan
    Inst Chem Ind Forest Prod, CAF, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,SFA, Nanjing 210042, Jiangsu, Peoples R China.;Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China..
    Jiang, Jianchun
    Inst Chem Ind Forest Prod, CAF, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,SFA, Nanjing 210042, Jiangsu, Peoples R China.;Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China..
    Sandström, Linda
    RISE Energy Technol Ctr AB, Box 726, SE-94128 Pitea, Sweden..
    Jönsson, Pär G.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    In situ catalytic fast pyrolysis of lignin over biochar and activated carbon derived from the identical process2022In: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 227, article id 107103Article in journal (Refereed)
    Abstract [en]

    In this study, a sustainable in situ catalytic fast pyrolysis (CFP) of lignin was developed by using biochar and activated carbon (AC) as catalysts, which is derived from the same CFP of lignin process. The results showed that using biochar as the catalyst mainly promoted the production of non-condensable gas, water, and guaiacol-rich oil regardless of the biochar-to-lignin ratio. The catalytic effect of the biochar was mainly attributed to the surface sodium and alkali metals. Using AC44.7% and AC48.6% as the catalyst resulted in a high yield of guaiacol-rich oil, whereas using AC64.3% induced a great decrease of the tarry oil yield and a significant increase of the phenol concentration in bio-oil. The diffusion efficiency of the reactive intermediates inside the catalysts determined by the pore size was believed to be the greatest determinant of the catalytic performance of the ACs. The mesopores were large enough to allow most of the reactive intermediates to diffuse quickly and react. Moreover, by using the same catalyst, char agglomeration was almost completely suppressed after in situ CFP. Two major problems, tar production and char agglomeration, which limit the large-scale application of fast lignin pyrolysis are believed to be solved.

  • 16.
    Yang, Hanmin
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Zaini, Ilman Nuran
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Pan, Ruming
    School of Energy Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China.
    Jin, Yanghao
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Wang, Yazhe
    KTH, School of Industrial Engineering and Management (ITM).
    Li, Lengwan
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Biocomposites. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.
    Bolívar Caballero, José Juan
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Shi, Ziyi
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Subasi, Yaprak
    Department of Chemistry - Ångström Laboratory, Structural Chemistry, Uppsala University, Lägerhyddsvägen 1, 751 21, Uppsala, Sweden, Lägerhyddsvägen 1.
    Nurdiawati, Anissa
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Sustainability, Industrial Dynamics & Entrepreneurship.
    Wang, Shule
    International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, 210037, Nanjing, China, Longpan Road 159; Jiangsu Province Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), No. 16, Suojin Five Village, 210042, Nanjing, China, No. 16, Suojin Five Village.
    Shen, Yazhou
    Department of Mechanical Engineering, Imperial College London, SW7 2AZ, London, UK.
    Wang, Tianxiang
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Materials.
    Wang, Yue
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Materials.
    Sandström, Linda
    Department of Biorefinery and Energy, RISE Research Institutes of Sweden AB, Box 726, SE-941 28, Piteå, Sweden.
    Jönsson, Pär
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Yang, Weihong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Han, Tong
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Process.
    Distributed electrified heating for efficient hydrogen production2024In: Nature Communications, E-ISSN 2041-1723, Vol. 15, no 1, article id 3868Article in journal (Refereed)
    Abstract [en]

    This study introduces a distributed electrified heating approach that is able to innovate chemical engineering involving endothermic reactions. It enables rapid and uniform heating of gaseous reactants, facilitating efficient conversion and high product selectivity at specific equilibrium. Demonstrated in catalyst-free CH4 pyrolysis, this approach achieves stable production of H2 (530 g h−1 L reactor−1) and carbon nanotube/fibers through 100% conversion of high-throughput CH4 at 1150 °C, surpassing the results obtained from many complex metal catalysts and high-temperature technologies. Additionally, in catalytic CH4 dry reforming, the distributed electrified heating using metallic monolith with unmodified Ni/MgO catalyst washcoat showcased excellent CH4 and CO2 conversion rates, and syngas production capacity. This innovative heating approach eliminates the need for elongated reactor tubes and external furnaces, promising an energy-concentrated and ultra-compact reactor design significantly smaller than traditional industrial systems, marking a significant advance towards more sustainable and efficient chemical engineering society.

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