Innovative integrated process for the treatment of azo dyes: coupling of photocatalysis and biological treatment

被引：39

作者：

Brosillon, S. ^{[1
]}

Djelal, H. ^{[1
]}

Merienne, N. ^{[1
]}

Amrane, A. ^{[1
]}

机构：

[1] Univ Rennes 1, Ecole Natl Super Chim Rennes, Equipe Chim & Ingn Procedes, CNRS SCR UMR 6226, F-35700 Rennes, France

来源：

DESALINATION | 2008年 / 222卷 / 1-3期

关键词：

azo dyes; biodegradation; integrated processes; photocatalysis;

D O I：

10.1016/j.desal.2007.01.153

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Tests of the biodegradation of the azo dyes Reactive Black 5 and Reactive Yellow 145 confirmed the low biodegradability of these components in the considered conditions, namely a strain of Pseudomonas fluorescens, cultivated at 25 degrees C, an initial pH of 7 and in presence of a supplementary carbon source, glucose. Indeed, for an initial dye concentration of 40 ppm, the maximum yields of decolouration were 27% and 18% for the two dyes RB5 and RY145. Some tests of biological mineralisation of solutions preliminary photocatalysed demonstrate a mineralisation of the considered solutions for various irradiation times. Identification of the intermediate by-products is in progress to propose a reaction pathway.

引用

页码：331 / 339

页数：9

共 34 条

[1] Photocatalytic degradation of azo-dyes reactive black 5 and reactive yellow 145 in water over a newly deposited titanium dioxide [J].