Photocatalytic degradation of water organic pollutants: pollutant reactivity and kinetic modeling

被引：31

作者：

Serrano, B

de Lasa, H ^{[1
]}

机构：

[1] Univ Western Ontario, Fac Engn Sci, Chem Reactor Engn Ctr, London, ON N6H 5B9, Canada

[2] Univ Automoma Zacatacas, Fac Ciencias Quim, Dept Ingn Quim, Guadalupe 98000, Zacatecas, Mexico

来源：

CHEMICAL ENGINEERING SCIENCE | 1999年 / 54卷 / 15-16期

关键词：

photocatalysis; photoreactors; kinetic modelling; energy efficiency;

D O I：

10.1016/S0009-2509(98)00478-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Photocatalytic reactors can play an increasing role in novel technologies for the purification of water polluted with organic chemicals. These organic pollutants may strongly adsorb on the TiO(2)-mesh system leading to an overall process influenced by the combined adsorption/reaction phenomena. In the present study, chlorinated aromatics frequently found as water contaminants (2chlorophenol and 2-4-dichlarophenol) are selected as model pollutants. It is demonstrated, developing experiments in a novel photocatalytic reactor (Photo-CREC unit) that addition of chlorine atoms to the phenol molecule has a significant impact on both adsorption and photoreaction. Due to catalyst deactivation and drop in lamp power, kinetic constants are corrected to conditions of new lamp and fresh catalyst. It is foreseen that using these corrected kinetic constants, high-energy efficiencies (PTEF) can be achieved in Photo-CREC. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：3063 / 3069

页数：7

共 14 条

[1] KINETIC-STUDIES IN HETEROGENEOUS PHOTOCATALYSIS .1. PHOTOCATALYTIC DEGRADATION OF CHLORINATED PHENOLS IN AERATED AQUEOUS-SOLUTIONS OVER TIO2 SUPPORTED ON A GLASS MATRIX [J].