Electrochemical degradation of reactive Brilliant Red K-2BP on Ti/RuTiIrSnMn oxide anode in a batch cell

  • Luo Jiancheng School of Chemistry and Environment, South China Normal University, Guangzhou 510006
  • Yang Jie School of Chemistry and Environment, South China Normal University, Guangzhou 510006
  • Li Weishan School of Chemistry and Environment, South China Normal University, Guangzhou 510006; Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006 and Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (MOE), South China Normal University, Guangzhou 510006
  • Huang Qiming School of Chemistry and Environment, South China Normal University, Guangzhou 510006; Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006andEngineering Research Center of Materials and Technology for Electrochemical Energy Storage (MOE), South China Normal University, Guangzhou 510006
  • Xu Hongkang Dongguan Hongjie Environmental Technologies Ltd, Dongguan 523039

Abstract

Electrochemical degradation of Reactive Brilliant Red K-2BP on Ti/RuTiIrSnMn oxide anode in chloride containing solution was investigated by voltammetry and electrolysis in a batch cell. It is found that the degradation mechanism of K-2BP on Ti/RuTiIrSnMn oxide anode involves an indirect electrocatalytic oxidation, in which K-2BP is oxidized by the electrochemically generated active chlorine. This degradation reaction follows pseudo-first order reaction kinetics. Ti/RuTiIrSnMn oxide exhibits excellent electrocata­lytic activity toward the generation of active chlorine from chloride. Hence, K-2BP can be electrochemically degraded effectively in chloride containing solution. The decolorization efficiency was found to increase with the decrease in pH and with the increase in current density, NaCl concentration, temperature, and flow rate of the solution.

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Published
10-11-2012
Section
Electrochemical Engineering