Destruction of phenol aqueous solution by photocatalysis or direct photolysis

被引：165

作者：

Hu, C ^{[1
]}

Wang, YZ ^{[1
]}

Tang, HX ^{[1
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China

来源：

CHEMOSPHERE | 2000年 / 41卷 / 08期

基金：

中国国家自然科学基金;

关键词：

direct photolysis; photocatalysis; polymerization; phenol;

D O I：

10.1016/S0045-6535(99)00539-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photodegradation of phenol has been investigated under a high-pressure mercury lamp with a kind of jacket (glass or quartz) depending on used UV light range and a variety of experimental conditions: UV (lambda > 200 nm) with oxygen or with TiO2 and oxygen or with N-2; UV (lambda > 330 nm) with oxygen or with TiO2 and oxygen or with N-2. Photocatalysis and direct photolysis of phenol have different reaction pathways. Direct photolysis of phenol yielded a brown-yellow complex organic polymer in both aerobic and anaerobic environments. The polymer cannot be mineralized in an anaerobic environment. The effects of catalyst amount and oxygen concentration in the reaction atmosphere on the destruction of phenol were studied. The results prove that an appropriate catalyst amount can avoid direct photolysis and increase the mineralization rate of phenol. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1205 / 1209

页数：5

共 10 条

[1] PHOTOCATALYTIC DEGRADATION OF ORGANOPHOSPHOROUS INSECTICIDES IN AQUEOUS SEMICONDUCTOR SUSPENSIONS [J].