Anodic oxidation of Orange II on Ti/BDD electrode: Variable effects

Xueming Chen, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

101 Citations (Scopus)

Abstract

In this study, the boron-doped diamond (BDD) electrode using Ti as a substrate (Ti/BDD) was applied to oxidize Orange II anodically. The effects of operational variables on the process performance were examined systematically. Experimental results showed that high pH, high temperature and low current density were beneficial for Orange II oxidation. Nevertheless, the pH effect was not significant. There was no effect of the electrolyte concentration on oxidation efficiency in the investigated range of 1500-3000 mg/L Na2SO4. In addition, it was observed that polymeric intermediate products were formed during oxidation. The amount of the polymeric products depended on operational conditions. High pH, high temperature, low current density and low initial Orange II concentration tended to suppress the formation of polymeric products.
Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalSeparation and Purification Technology
Volume48
Issue number1
DOIs
Publication statusPublished - 1 Feb 2006
Externally publishedYes

Keywords

  • COD
  • Current efficiency
  • Dyestuff
  • Oxidation efficiency
  • Textile
  • Wastewater

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

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