线-筒式脉冲高压电晕放电降解四氯乙烯/间二甲苯混合污染物  

Decomposition of Tetrachloroethylene and 1,3-xylene Mixture in a Wire-tube Pulsed Corona Reactor

作　　者：那刚[1] 李锻[1,2] 吴彦[1,2] 李杰[1,2] 鲁娜[1,2] 

机构地区：[1]大连理工大学环境与生命学院,辽宁大连116024 [2]大连理工大学静电与特种电源研究所,辽宁大连116024

出　　处：《河北大学学报（自然科学版）》2010年第5期534-537,共4页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50678031)

摘　　要：为了研究混合挥发性有机化合物(volatile organic compounds,VOCs)和单一VOC的降解特性,将气态四氯乙烯/间二甲苯混合物引入线-筒式放电反应器,利用脉冲高压进行降解实验.结果表明:电压28.6 kV时,混合物中四氯乙烯和间二甲苯的降解率比初始体积分数各为0.02%的2种单一物质分别降低33.0%和22.7%,与初始体积分数各为0.04%的2种单一物质相比,混合后四氯乙烯的降解率降低38.3%,而间二甲苯的降解率增加18.6%;混合物中间二甲苯的存在,改变了四氯乙烯的降解趋势;四氯乙烯比间二甲苯易矿化.A wire-tube reactor initiated by pulsed high voltage was used to remove the volatile organic compounds（VOCs） mixture of tetrachloroethylene and 1,3-xylene to investigate the characteristics of their degradation.The results indicated that at the pulse voltage of 28.6 kV,the degradation efficiencies of tetrachloroethylene and 1,3-xylene in mixture were 33.0% and 22.7% lower than that in single pollutant with initial volume percentage of 0.02%,respectively.As compared with the single pollutant with initial volume percentage of 0.04%,the degradation efficiency of tetrachloroethylene in mixture decreased by 38.3%,while there was an increase of 18.6% for 1,3-xylene degradation.The presence of 1,3-xylene in mixture impacted the degradation characteristics of tetrachloroethylene.The mineralization of tetrachloroethylene was much easier than that of 1,3-xylene.

关 键 词：混合VOCs去除 脉冲高压 碳氧化物选择性 

分 类 号：X511[环境科学与工程—环境工程]