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Degradation of methyl orange by pulsed corona discharges in aqueous solution

수중 펄스코로나 방전에 의한 메틸오렌지 제거 특성

  • 이현돈 (경상대학교 환경보전학과) ;
  • 김종오 (경상대학교 도시공학과) ;
  • 김형갑 (경남과학기술대학교 환경공학과) ;
  • 정재우 (경남과학기술대학교 환경공학과)
  • Published : 2012.02.15

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

References

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