Characteristics of volatile organic compound release and kinetics of automotive waste paint sludge
YANG Rui-hao1, LI Bin1, LIU Yi1,2, YAN Yu-sen3, LIU Ze-wei1,2, HUANG Qi-fei2, HUANG Ze-chun2, LIU Ting-ting2
1. Faculty of Environmental Science and engineering, Kunming University of Science and Technology, Kunming 650500, China; 2. State Key Laboratory of identification and risk control of hazardous wastes for environmental protection, Chinese Academy of Environmental Sciences, Beijing 100012, China; Chongqing Academy of Eco-Environmental Science, Chongqing 401147, China
Abstract：Automotive waste paint sludge (PS) is a hazardous waste produced in the process of automobile painting. PS has a high environmental pollution risk due to the presence of hazardous characteristics such as VOCs, substantial content of heavy metals and low flash point. However, the environmental risk of VOCs released from PS during storage has not been explored. VOCs release characteristics from four typical PS and the release kinetics of VOCs in PS were investigated with environmental test chamber. The results show that the internal diffusion mechanism of PS dominated the whole release period, the oxygen compounds in the released VOCs were more easily diffused from PS into the air than did the aromatic compounds, and the oil based wet paint sludge (OBWPS) had higher total volatile organic compounds (TVOC) and longer release time. Both cumulative emission mass flux of single VOCs and TVOC were fitted well by first-order kinetic equation with high squared correlation coefficients (R2>99%).
杨锐豪, 李彬, 刘义, 颜渝森, 刘泽伟, 黄启飞, 黄泽春, 刘婷婷. 汽车漆渣挥发性有机物释放特性及动力学研究[J]. 中国环境科学, 2024, 44(2): 903-910.
YANG Rui-hao, LI Bin, LIU Yi, YAN Yu-sen, LIU Ze-wei, HUANG Qi-fei, HUANG Ze-chun, LIU Ting-ting. Characteristics of volatile organic compound release and kinetics of automotive waste paint sludge. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 903-910.
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