Kinetics of quinoline degradation by O3/UV in aqueous phase

被引：37

作者：

Wang, XM ^{[1
]}

Huang, X ^{[1
]}

Zuo, CY ^{[1
]}

Hu, HY ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Environm Sci & Engn, Environm Simulat & Pollut Control State Key Joint, Beijing 100084, Peoples R China

来源：

CHEMOSPHERE | 2004年 / 55卷 / 05期

关键词：

ozone combined with UV; rate constant; hydroxyl radical; relative importance;

D O I：

10.1016/j.chemosphere.2003.11.019

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The kinetics of quinoline degradation by O-3/UV in aqueous phase was studied in this paper. It was found that the stoichiometric factor for the number of ozone molecule consumed by per quinoline molecule was 1. The second-order rate constants at 15 degreesC for the direct reaction of quinoline with ozone and that for the reaction of quinoline with (OH)-O-. were determined to be 51.0 and 7.24x 10(9) M-1 s(-1), respectively. In O-3/UV reaction system, (OH)-O-. was the more important oxidant to degrade quinoline than ozone. For a comparison, in O-3 reaction system, the relative importance of the two oxidants depended on the pH value greatly. To make the degradation of quinoline more practical, improvement of the concentration of (OH)-O-. is more feasible. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：733 / 741

页数：9

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