TiO2-UV photocatalytic oxidation of Reactive Yellow 14:: Effect of operational parameters

被引：164

作者：

Muruganandham, M. ^{[1
]}

Swaminathan, M. ^{[1
]}

机构：

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 135卷 / 1-3期

关键词：

AOP; TiO2; azodyes; Reactive Yellow 14; UV radiation; electron acceptors;

D O I：

10.1016/j.jhazmat.2005.11.022

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photocatalytic decolourisation and degradation of an azo dye Reactive Yellow (RY14) in aqueous solution with TiO2 as photocatalyst in slurry form has been carried out using UV-A radiation (365 nm). The effect of various parameters such as catalyst loading, radiation intensity and initial dye concentration on the dye removal was investigated to find optimum conditions. The decolourisation and degradation kinetics have been analysed. Both follow modified Langmuir-Hinshelwood kinetic (L-H) model. A study on the effect of electron acceptors on photooxidation reveals that both decolourisation and degradation increase in the presence of H2O2, (NH4)(2)S2O8, KBrO3, to certain dosage beyond which the enhancement effect is negligible. But negative effects are observed in the presence of NaCl or Na2CO3. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：78 / 86

页数：9

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