title: Waste-to-energy: Dehalogenation of plastic-containing wastes.
abstract: The dehalogenation measurements could be carried out with the decomposition of plastic wastes simultaneously or successively. This paper reviewed the progresses in dehalogenation followed by thermochemical conversion of plastic-containing wastes for clean energy production. The pre-treatment method of MCT or HTT can eliminate the halogen in plastic wastes. The additives such as alkali-based metal oxides (e.g., CaO, NaOH), iron powders and minerals (e.g., quartz) can work as reaction mediums and accelerators with the objective of enhancing the mechanochemical reaction. The dehalogenation of waste plastics could be achieved by co-grinding with sustainable additives such as bio-wastes (e.g., rice husk), recyclable minerals (e.g., red mud) via MCT for solid fuels production. Interestingly, the solid fuel properties (e.g., particle size) could be significantly improved by HTT in addition with lignocellulosic biomass. Furthermore, the halogenated compounds in downstream thermal process could be eliminated by using catalysts and adsorbents. Most dehalogenation of plastic wastes primarily focuses on the transformation of organic halogen into inorganic halogen in terms of halogen hydrides or salts. The integrated process of MCT or HTT with the catalytic thermal decomposition is a promising way for clean energy production. The low-cost additives (e.g., red mud) used in the pre-treatment by MCT or HTT lead to a considerable synergistic effects including catalytic effect contributing to the follow-up thermal decomposition.
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China. Electronic address: yafeisjtu@gmail.com.
authors.forename: Yafei
authors.initials: Y
authors.lastname: Shen
authors.affiliation: College of Hunanities and Social Science, Nanjing University of Aeronautics and Astronautic, Nanjing 210016, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Zhao
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China; Department of Environmental Toxicology, University of California at Davis, 1 Shields Avenue, Davis, CA 95616, United States.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Wang
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Xingming
authors.initials: X
authors.lastname: Chen
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Xinlei
authors.initials: X
authors.lastname: Ge
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
authors.forename: Mindong
authors.initials: M
authors.lastname: Chen
mesh_terms: D004736:Energy-Generating Resources; D054879:Halogenation; D017745:Incineration / Q000295:instrumentation; D010969:Plastics / Q000737:chemistry*; D012037:Refuse Disposal / Q000295:instrumentation; D062611:Solid Waste / Q000032:analysis*
chemical_list: D010969:Plastics; D062611:Solid Waste
keywords: Clean fuels; Dehalogenation; Mechanochemical treatment; Plastic wastes; Thermolysis