Citation: Xi Kui WANG, Guan Hong CHEN, Zhong Yan YAO. Sonochemical Degradation of Polychlorinated Biphenyls in Aqueous Solution[J]. Chinese Chemical Letters, ;2003, 14(2): 205-208. shu

Sonochemical Degradation of Polychlorinated Biphenyls in Aqueous Solution

College of Chemistry and Environmental Science, University of Jinan, Jinan 250022

Received Date: 12 April 2002

Fund Project: We thank the 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).

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 3.69×10^-2, 3.19×10^-2 and 2.06×10^-2 at 25±1℃ 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,
- degradation,
- sonochemistry,
- 2-chlorobiphenyl
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