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http://dx.doi.org/10.11001/jksww.2012.26.1.069

Degradation of methyl orange by pulsed corona discharges in aqueous solution  

Lee, Hyeon-Don (경상대학교 환경보전학과)
Kim, Jong-Oh (경상대학교 도시공학과)
Kim, Hyoung-Kab (경남과학기술대학교 환경공학과)
Chung, Jae-Woo (경남과학기술대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.26, no.1, 2012 , pp. 69-76 More about this Journal
Abstract
A laboratory experiment on methyl orange degradation in pulsed corona discharges was carried out. Effects of operating parameters such as applied voltage, pH, conductivity and initial concentration on methyl orange degradation were investigated. The pulsed corona discharges decreased the pH of solution and increased conductivity, probably due to products generated from methyl orange degradation by corona discharges. The decrease of initial pH enhanced the methyl orange degradation. The methyl orange degradation was fastest in $100{\mu}S/cm$ conductivity solution, followed by 50 and $200{\mu}S/cm$, indicating that $100{\mu}S/cm$ is the most favorable in the aspect of radical generation among the experimented conditions. The methyl orange of initial concentration from 20 to 60mg/L was effectively degraded in pulsed corona discharges. The lower initial concentration of methyl orange, the faster degradation was observed.
Keywords
Pulsed corona discharges; Methyl orange; Operating parameters; Degradation rate;
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Times Cited By KSCI : 3  (Citation Analysis)
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