Photooxidative degradation of Malachite Green (MG) by UV/H2O2:: Influence of operational parameters and kinetic modeling
Photooxidative degradation of Malachite Green (MG) by UV/H2O2:: Influence of operational parameters and kinetic modeling
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DOI：
10.1016/j.dyepig.2005.04.012
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发表时间：
2006-07-01
影响因子：
4.5
通讯作者：
Behnajady, MA
中科院分区：
文献类型：
--
作者：
Modirshahla, N;Behnajady, MA
在间歇式光反应器中，以H2 O2为氧化剂，在不同光强下，研究了紫外光照射下草酸孔雀石绿色（MG）的脱色效果。H_2O_2和紫外光单独使用时，其影响可忽略不计。MG的去除率对H2 O2、MG初始浓度和光照强度等操作参数较为敏感。MG浓度与时间的半对数曲线呈线性关系，表明假一级反应（k（最佳）= 1.006 min（-1））。提出了一个简单的动力学模型，证实了伪一级反应。(c)2005爱思唯尔有限公司保留所有权利。
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.