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Formation Mechanism of Chlorate ($ClO_3\;^-$) by Electrochemical Process  

Baek, Ko-Woon (Department of Environmental Engineering, Yonsei University, YIEST)
Jung, Yeon-Jung (Department of Environmental Engineering, Yonsei University, YIEST)
Kang, Joon-Wun (Department of Environmental Engineering, Yonsei University, YIEST)
Oh, Byung-Soo (Gwangju Institute of Science and Technology, Center for Seawater Desalination Plant)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.8, 2009 , pp. 627-634 More about this Journal
Abstract
This study was done to find out the formation mechanism of chlorate by electrochemical process using chloride ion ($Cl^-$) as an electrolyte. Firstly, the effective factors such as pH and initial chloride concentration were figured out to see the formation property of chlorate during electrolysis. And the relation of free chlorine, and mixed oxidants such as OH radical and ozone with chlorate were estimated to concretize the formation mechanism. As a result, it was found that the major reaction of chlorate formation would be electrochemical reaction with free chlorine, and also the direct oxidation of chloride ion and the reaction by OH radical were participated in the formation of chlorate. Moreover, it was observed that formed chlorate was oxidized to perchlorate. Lastly, the optimum condition was recommended by comparing free chlorine with chlorate concentration during the electrochemical process with the different electrode separation.
Keywords
Electrochemical process; Mixed oxidants; Chlorate ($ClO_3\; ^-$);
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Times Cited By KSCI : 3  (Citation Analysis)
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