TiO_2/H_2O_2/UV和TiO_2/O_3/UV降解对氯苯甲酸和喹啉的试验研究  

Degradation of 4-CBA and quinoline by TiO_2/H_2O_2/UV and TiO_2/O_3/UV systems

作　　者：方喜玲[1] 成捷[1] 胡兰花[1] 王小毛[1] 黄霞[1] 施汉昌[1] 

机构地区：[1]清华大学环境科学与工程系环境模拟与污染控制国家联合重点实验室,北京100084

出　　处：《环境污染治理技术与设备》2005年第9期12-15,共4页Techniques and Equipment for Environmental Pollution Control

基　　金：国家"973"重点研究发展规划项目(G1999045711)

摘　　要：主要叙述TiO2/H2O2/UV和TiO2/O3/UV体系降解对氯苯甲酸(4-CBA)和喹啉的试验研究。研究表明,(1)在TiO2/H2O2/UV体系里目标物降解速度先随过氧化氢投加量的增加而提高,但超过一定浓度之后便开始下降;(2)在TiO2/O3/UV体系中,目标降解物的反应速度都非常快,且臭氧浓度高的时候降解速度更快;(3)二氧化钛催化剂在TiO2/O3/UV体系中作为积极因素有助于提高反应速率,而在TiO2/H2O2/UV体系是消极因素,会降低反应速率。Two advanced oxidation processes, TiO2/H2O2/UV and TiO2/O3UV, were used m we chemical degradation of 4-CBA and quinoline in synthetic water with an initial concentration of about 100 mg/L. It was found that, （1） in the TiO2/H2O2/UV system, the degradation rate of target substances was accelerated at low H2O2 concentration and reached the maximum at prime H2O2 concentration,however, the photo-catalytic degradation rate of target substance was decreased with the further increasing of H2O2 concentration ; （2） in the TiO2/O3/ UV system, it can be seen that 4-CBA and quinoline was degraded very quickly,and the degradation rate of target substances was enhanced with the increasing of 03 concentration ; （3） powder TiO2 catalyst has a positive effect on production of hydroxyl radicals in TiO2/O3UV system but negative effect in TiO2/H2O/UV system.

关 键 词：二氧化钛(TiO2) 过氧化氢 臭氧 对氯苯甲酸(4-CBA) 喹啉 降解速率 

分 类 号：X703.1[环境科学与工程—环境工程]