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

Xueming Chen; Guohua Chen

doi:10.1016/j.seppur.2005.07.024

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

Xueming Chen, Guohua Chen

Research output: Journal article publication › Journal article › Academic research › peer-review

119 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 language	English
Pages (from-to)	45-49
Number of pages	5
Journal	Separation and Purification Technology
Volume	48
Issue number	1
DOIs	https://doi.org/10.1016/j.seppur.2005.07.024
Publication status	Published - 1 Feb 2006
Externally published	Yes

Keywords

COD
Current efficiency
Dyestuff
Oxidation efficiency
Textile
Wastewater

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

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10.1016/j.seppur.2005.07.024

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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.",

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AU - Chen, Xueming

AU - Chen, Guohua

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N2 - 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.

AB - 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.

KW - COD

KW - Current efficiency

KW - Dyestuff

KW - Oxidation efficiency

KW - Textile

KW - Wastewater

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DO - 10.1016/j.seppur.2005.07.024

M3 - Journal article

SN - 1383-5866

VL - 48

SP - 45

EP - 49

JO - Separation and Purification Technology

JF - Separation and Purification Technology

IS - 1

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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