Decolourisation of dyes and dyehouse effluent in a bubble-column reactor by heterogeneous catalytic ozonation

被引：16

作者：

Hassan, MM

Hawkyard, CJ

机构：

[1] WRONZ, Christchurch, New Zealand

[2] Univ Manchester, Dept Text & Paper, Manchester M60 1QD, Lancs, England

来源：

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2006年 / 81卷 / 02期

关键词：

catalytic ozonation; decolourisation; hydrated alumina; activated carbon; dyehouse effluent; heterogeneous catalysis; reaction kinetics;

D O I：

10.1002/jctb.1384

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The decolourisation of aqueous solutions of dyes by ozonation with various heterogeneous catalysts using a bubble-column reactor was investigated. The catalysts studied were hydrated alumina, activated carbon and ferric oxide supported on silica. The optimum catalyst concentration and pH for decolourisation were determined in each case. Hydrated alumina and silica-supported ferric oxide showed excellent catalytic activity under acidic conditions, whereas activated carbon was found to be effective under both acidic and alkaline conditions. In addition to studying the effect on individual dyes, tests were carried out on effluent from a commercial dyeing unit. The reaction kinetics in the presence of various catalysts were also monitored. (c) 2005 Society of Chemical Industry.

引用

页码：201 / 207

页数：7

共 39 条

[1] COMPARATIVE EFFICIENCY OF 3 SYSTEMS (O-3, O-3/H2O2 AND O-3/TIO2) FOR THE OXIDATION OF NATURAL ORGANIC-MATTER IN WATER [J].