KINETICS OF FERRIC ION-PROMOTED PHOTODECOMPOSITION OF 2-CHLOROPHENOL

被引：26

作者：

KAWAGUCHI, H

INAGAKI, A

机构：

[1] Department of Materials Science and Engineering, Fukui University Bunkyo 3-9-1, Fukui

来源：

CHEMOSPHERE | 1994年 / 28卷 / 01期

关键词：

D O I：

10.1016/0045-6535(94)90200-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photodecomposition of 2-chlorophenol in ferric solutions at pH:3.0 was investigated using monochromatic light(313 nm). The concentrations of 2-chlorophenol were in the range of 5.0 x 10(-6) to 1.5 x 10(-4) mol.l-1. Above 5.0 x 10(-5) mol.l-1 of 2-chlorophenol concentration, it decreased linearly with irradiation time and the rates of photodecomposition were independent of the initial concentrations. Below 3.0 x 10(-5) mol.l-1 of 2-chlorophenol concentration, the initial rates of photodecomposition decreased with lowering the initial concentration of 2-chlorophenol. The results were in good agreement with the kinetic model that assumed the steady-state concentration of hydroxyl radical formed by photo-dissociation of Fe(III)-hydroxy complex. The rates of ferrous ion formation in the presence of 2-chlorophenol were larger than that in the absence of 2-chlorophenol.

引用

页码：57 / 62

页数：6

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