Continuous Mediated Electrochemical Oxidation of Ethylene Glycol by Co(III)/Co(II) and Fe(III)/Fe(II) Redox Systems

Co(III)/Co(II) 및 Fe(III)/Fe(II) 산화환원계에 의한 에텔렌글리콜의 연속 매개전해 산화

  • Kim, Ik-Seong (Hwamyeong Water Purification Office, Water Works HQ Busan Metropolitan City) ;
  • Park, Seung-Cho (Department of Environmental Engineering, Dong-A University)
  • 김익성 (부산광역시 상수도사업본부 화명정수사업소) ;
  • 박승조 (동아대학교 환경공학과)
  • Received : 2005.02.15
  • Accepted : 2005.08.30
  • Published : 2005.10.10

Abstract

Mediated electrochemical oxidation (MEO) is an aqueous process which oxidizes organics electrochemicallly at low temperatures and pressures. The useful process can be used to treat mixed wastes containing hazardous organics. This paper have studied MEO of ethylene glycol (EG) in nitric acids by Fe(III)/Fe(II) and Co(III)/Co(II) system. It investigated current density, supporting electrolyte concentration, hydraulic retention time, removal efficiency of EG by MEO. Removal efficiency of EG by MEO was superior in Co(III)/Co(II) redox system than Fe(III)/Fe(II) redox system, where MEO removal efficiency was 100 percent. In case of EG, the reactions were fast and good yields of carbon dioxide formation was observed.

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