Photooxidative degradation of Malachite Green (MG) by UV/H2O2:: Influence of operational parameters and kinetic modeling

被引：133

作者：

Modirshahla, N ^{[1
]}

Behnajady, MA ^{[1
]}

机构：

[1] Islamic Azad Univ, Res Lab, Dept Appl Chem, Tabriz, Iran

来源：

DYES AND PIGMENTS | 2006年 / 70卷 / 01期

关键词：

advanced oxidation processes (AOPs); photooxidation; UV/H2O2; malachite green; kinetic model;

D O I：

10.1016/j.dyepig.2005.04.012

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The decolorization of Malachite Oxalate Green (MG), a dye containing three groups of aryls was investigated using UV radiation in the presence of H2O2 in a batch photoreactor at different light intensities. H2O2 and UV-light showed negligible effect when they were used independently. Removal efficiency of MG was sensitive to the operational parameters such as initial concentrations of H2O2, MG and light intensity. The semi-logarithmic graphs of the concentrations of MG versus time were linear, suggesting pseudo-first order reaction (k(optimum) = 1.006 min(-1)). A simple kinetic model is proposed which confirms pseudo-first order reaction. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：54 / 59

页数：6

共 20 条

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