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.
出处
《环境污染治理技术与设备》
CSCD
北大核心
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)
