Photochemical oxidation of reactive azo dye with UV-H2O2 process

被引：360

作者：

Muruganandham, M ^{[1
]}

Swaminathan, M ^{[1
]}

机构：

[1] Annamalai Univ, Dept Chem, Annamalainagar 608002, Tamil Nadu, India

来源：

DYES AND PIGMENTS | 2004年 / 62卷 / 03期

关键词：

photochemical oxidation; reactive orange 4; H2O2; UV-radiation; solar light;

D O I：

10.1016/j.dyepig.2003.12.006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The photooxidation of a chlorotriazine reactive azo dye Reactive Orange 4 has been carried out in the presence of H2O2 using UV-A light. The effects of reaction pH, applied H2O2 dose, UV light power have been studied. These parameters strongly influence the decolourisation and degradation. The increase of initial dye concentration decreases the removal rate. The kinetics of decolourisation and degradation follow pseudo-first order. The solar-H2O2 process is also able to oxidise the dye and its efficiency is comparable with UV-H2O2. The influence of dye assisting chemicals such as NaOH, NaC1 and Na2CO3 on photodecolourisation has been investigated. Addition of these chemicals inhibit the removal rate. The optimum operating conditions of the method are reported. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：269 / 275

页数：7

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