Sonochemical Degradation of Polychlorinated Biphenyls in Aqueous Solution  

作　　者：Xi Kui WANG Guan Hong CHEN Zhong Yan YAO 

机构地区：[1]College of Chemistry and Environmental Science,University of Jinan,Jinan 250022

出　　处：《Chinese Chemical Letters》2003年第2期205-208,共4页中国化学快报(英文版)

基　　金：financial support from the Natural Science Foundation of Shandong Province (No. Y98B03022) and the Foundation for University Key Teacher by the Ministry of Education(No. GG-630-11944-1006).

摘　　要：Polychlorinated biphenyl (PCB) is a kind of persistent and dangerous environmental pollutants. This paper presented the research result of sonochemical degradation of 2-chloro- biphenyl (2-CBP), 4-chlorobiphenyl (4-CBP) and 4,4-dichlorobiphenyl (4,4-CBP)in water. The ultrasonic degradation kinetics of 2-CBP, 4-CBP and 4,4-CBP in water were found to be first-order and the degradation rate coefficients are 3.69?0-2, 3.19?0-2 and 2.06?0-2 at 25?C for 2-CBP, 4-CBP and 4,4-CBP respectively. The influence of initial concentrations, reaction temperature on the ultrasonic decomposition of 2-CBP were also investigated.Polychlorinated biphenyl (PCB) is a kind of persistent and dangerous environmental pollutants. This paper presented the research result of sonochemical degradation of 2-chloro- biphenyl (2-CBP), 4-chlorobiphenyl (4-CBP) and 4,4-dichlorobiphenyl (4,4-CBP)in water. The ultrasonic degradation kinetics of 2-CBP, 4-CBP and 4,4-CBP in water were found to be first-order and the degradation rate coefficients are 3.69?0-2, 3.19?0-2 and 2.06?0-2 at 25?C for 2-CBP, 4-CBP and 4,4-CBP respectively. The influence of initial concentrations, reaction temperature on the ultrasonic decomposition of 2-CBP were also investigated.

关 键 词：Polychlorinated biphenyl DEGRADATION SONOCHEMISTRY 2-chlorobiphenyl. 

分 类 号：X703[环境科学与工程—环境工程]