Evaluation of the formation of oxidants and by-products using Pt/Ti, RuO2/Ti, and IrO2/Ti electrodes in the electrochemical process

Yeojoon Yoon, Eunha Cho, Youmi Jung, Minhwan Kwon, Jaekyung Yoon, Joon Wun Kang

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Abstract

The aim of this study was to evaluate the formation of oxidants and by-products by using different electrode materials, such as Pt/Ti, RuO2/Ti, and IrO2/Ti, in the electrochemical process. The harmful by-products ClO-3 and ClO-4 were formed during the electrolysis of a Cl- electrolyte solution, as well as active chlorine, which is the most common water disinfectant. With regard to drinking water treatment, the most efficient electrode was defined as that leading to a higher formation of active chlorine and a lower formation of hazardous by-products. Overall, it was found that the Pt/Ti electrode should not be used for drinking water treatment applications, while the IrO2/Ti and RuO2/Ti electrodes are ideal for use.

Original languageEnglish
Pages (from-to)317-326
Number of pages10
JournalEnvironmental Technology (United Kingdom)
Volume36
Issue number3
DOIs
Publication statusPublished - 2015 Feb 1

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All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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