Evaluation of a pilot-scale biotrickling filter as a VOC control technology for the plastic coating sector |
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| Institution: | 1. College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China;2. College of Environmental Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541006, China;3. School of Environment, Tsinghua University, Beijing 100084, China;4. These authors contributed equally to this paper;1. Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, 510006, Guangzhou, China;2. GAC Honda Automobile Co., Ltd, Guangzhou, 510700, PR China;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China;3. Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China;1. Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou, 51143, China;2. State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China;1. Centre for Education in Environmental Sustainability, and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, New Territories, Hong Kong;2. College of Environmental Science and Engineering, State Key Laboratory for Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China;3. Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Tsing Yi Island, Hong Kong |
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| Abstract: | The performance and feasibility of a biotrickling filter (BTF) pilot unit for the treatment of exhaust gases from two robotic spray paint booths at a plastic coating facility were investigated. The volatile organic compound (VOC) concentrations in the emissions of the exhaust gases from the paint booths were relatively stable, although the VOC composition depended on the applied solvent-paint formulation in the booths. The pilot plant was operated for one year at empty bed residence times (EBRTs) ranging from 30 to 93 s. The performance of the system was affected by the solvent-paint formulations. An EBRT between 30 and 40 s was enough to meet legal requirements for products containing more than 60% biodegradable compounds, whereas a minimum EBRT of 80 s was required for emissions mainly composed of hydrophobic VOCs. The dynamics of the microbial population was carried out by fluorescence in situ hybridisation (FISH), indicating a high microbial diversity with composition changes associated with the solvent-paint used. The feasibility of the BTF was evaluated, showing that this technology is economically and environmentally competitive in comparison with thermal treatment technology. |
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