Thermal characterization of fly ash from one municipal solid waste incinerator (MSWI) in Shanghai |
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| Authors: | Zhang Haiying Zhao Youcai Qi Jingyu |
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| Institution: | 1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 120 Caobao Street, Shanghai, China;2. The State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, China;3. School of Ocean and Earth, Tongji University, Shanghai 200092, China;1. International Environmental Cooperation Center, Ministry of Ecology and Environment, Beijing 100035, China;2. POPs Environmental Consulting, Germany;3. Tianjin Eman Environmental Technology CO., Ltd., Tianjin 300392, China;4. CSD IDEA (Beijing) Environmental Test & Analysis Co., Ltd., Beijing 100192, China;1. Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China;2. College of Environment and Ecology, Chongqing University, Chongqing, 400044, PR China;3. College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, PR China;4. College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, PR China;1. Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand;2. Centre of Excellence in Geotechnical and Geoenvironmental Engineering, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand;3. Research Program: Sustainable Management of Industrial and Agricultural Wastes for Transitioning to a Circular Economy, Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand;4. Research Program of Industrial Waste Management – Policies and Practices, Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand;5. Research Network of NANOTEC – CU on Environment, Bangkok 10330, Thailand;1. TU Wien, Institute for Water Quality and Resource Management, Karlsplatz 13/226, 1040 Vienna, Austria;2. Bundesanstalt für Materialforschung und prüfung (BAM), engl. Federal Institute for Materials Research and Testing, Division Thermochemical Residues Treatment and Resource Recovery, Unter den Eichen 87, 12205 Berlin, Germany;1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China |
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| Abstract: | This study aims to develop a methodology for the thermal characterization of MSWI fly ash. We performed TGA–DTA and component variation analysis, microstructure transfer of sintered fly ash, as well as leaching toxicity, volatilization ratio and specification transformation of heavy metals as a function of temperature. It is found that content of crystal phases first increases between room temperature and 800 °C and then decreases between 800 °C and 1200 °C, while that of glass phases registers a reverse trend. Fly ash registers a SiO2–Al2O3–metal oxides system and its content of glass phases is around 57%. Increase of sintering temperature between 600 °C and 1200 °C is conducive to the reduction of soluble As, Cd, Cu, Hg, Pb, Ni and Zn, while content of soluble Cr increases as temperature rises from 800 °C to 1200 °C. |
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