摘要
汽车油漆废渣(PS)是汽车制造喷漆环节产生的危险废物,由于存在挥发性有机物(VOCs)、重金属含量高和燃点低等危险特性,PS具有很高的环境污染风险.然而,PS在储存过程中释放的VOCs的环境风险尚未被探究.本文通过环境试验箱,考察了4种典型PS中VOCs的释放特性,并研究PS中VOCs的释放动力学.结果表明:PS的内扩散阶段在整个释放期间占主导地位,释放的VOCs中含氧化合物比芳香烃化合物更容易从PS中扩散到空气中,油基湿式油漆废渣(OBWPS)具有较高的总挥发性有机物(TVOC)和较长的释放时间.PS中个体以及TVOC的累积释放通量符合一级动力学方程,并且相关系数R^(2)>99%.
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(R^(2)>99%).
作者
杨锐豪
李彬
刘义
颜渝森
刘泽伟
黄启飞
黄泽春
刘婷婷
YANG Rui-hao;LI Bin;LIU Yi;YAN Yu-sen;LIU Ze-wei;HUANG Qi-fei;HUANG Ze-chun;LIU Ting-ting(Faculty of Environmental Science and engineering,Kunming University of Science and Technology,Kunming 650500,China;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)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2024年第2期903-910,共8页
China Environmental Science
基金
国家环境保护危险废物鉴别与风险控制重点实验室开放基金(2022YSKY-06)
昆明理工大学分析测试基金[2020M20192207064]。
