Degradation mechanism of azo dye C.I. reactive red 2 by iron powder reduction and photooxidation in aqueous solutions

被引：283

作者：

Wu, F ^{[1
]}

Deng, NS ^{[1
]}

Hua, HL ^{[1
]}

机构：

[1] Wuhan Univ, Dept Environm Sci & Engn, Wuhan 430072, Hubei, Peoples R China

来源：

CHEMOSPHERE | 2000年 / 41卷 / 08期

关键词：

reduction; photooxidation; degradation; azo dye; UV-VIS spectrum;

D O I：

10.1016/S0045-6535(99)00538-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We have made a comparison of the UV-VIS spectra of three azo dyes, C. I. reactive red 2, orange II and C. I. reactive black 8, in aqueous solutions during treatment with iron powder reduction and photooxidation. From this, we propose their mechanisms for reduction-photooxidation. GC/MS analyses of the degradation products of the dye C. I. reactive red 2 demonstrated some important steps producing hydrogenated azo structure, substituted benzene and substituted naphthalene. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1233 / 1238

页数：6

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