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

被引：104

作者：

Chen, XM ^{[1
]}

Chen, GH ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem Engn, Kowloon, Hong Kong, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2006年 / 48卷 / 01期

关键词：

COD; current efficiency; dyestuff; oxidation efficiency; textile; wastewater;

D O I：

10.1016/j.seppur.2005.07.024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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