Influence of Chloride Ion on Electrochemical Oxidation Degradation of Phenol

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (2): 361.

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Influence of Chloride Ion on Electrochemical Oxidation Degradation of Phenol

WANG Xuan¹, HUANG Wei-Min^1,2, LIU Xiao-Bo¹, LU Hai-Yan^1,2, LIN Hai-Bo^1,2*

1. College of Chemistry, Jilin University, Changchun 130012, China;
2. Suzhou Nistar Chemical Technology Co. Ltd., Suzhou 215123, China

Received:2010-04-01 Revised:2010-05-06 Online:2010-02-10 Published:2011-02-23
Contact: LIN Hai-Bo E-mail:lhb910@jlu.edu.cn
Supported by:
国家“八六三”计划项目(批准号: 2006AA06Z321)、国家自然科学基金(批准号: 20873051)和江苏省自然科学基金(批准号: BK2008555)资助.

Abstract

Abstract: Influence of the presence of chloride ion as the electrolyte on electrochemical oxidation of phenol with both Ti/SnO2-Sb2O5/PbO2 and Ti/Ru-Ti-Sn oxide coating anode was investigated. The results showed that the addition of chloride ions in the electrolyte caused increase in removal efficiency, and the complete degradation of phenols pollutants. The main way of electrochemical degradation of phenol without chloride ion was direct electrochemical oxidation. It would contain both direct and indirect electrochemical oxidation during the degradation of phenol with chloride ion. It would mainly start with phenol indirect electrochemical oxidation on anode that could generate chlorine (such as Ti/Ru-Ti-Sn anode). For high oxygen evolution anode system, such as Ti/PbO2 anode, direct and indirect electrochemical oxidation of organic matter may occur at the same time. Effects of chloride ion on indirect electrochemical oxidation of organic matter is similar to the actions of catalyst, this kind of catalysis is mainly due to the generation of oxidation and reduction of the media of chloride ion and active chlorine in the surface layer and bulk solution during the process of organic oxidation.

Key words: Chloride Ion, Electrochemical oxidation, Degradation, Phenol

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WANG Xuan, HUANG Wei-Min, LIU Xiao-Bo, LU Hai-Yan, LIN Hai-Bo*. Influence of Chloride Ion on Electrochemical Oxidation Degradation of Phenol[J]. Chem. J. Chinese Universities, 2011, 32(2): 361.

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Influence of Chloride Ion on Electrochemical Oxidation Degradation of Phenol

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