PHOTODEGRADATION OF HEXACHLOROBENZENE CATALYZED BY TiO2

被引：0
|
作者：
Li, Fanxiu [1 ]
Lu, Xiaohua [2 ]
Li, Xiaobin [2 ]
Mei, Ping [1 ]
机构：
[1] Yangtze Univ, Coll Chem & Environm Engn, Jinzhou 434023, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Environm Sci Res Inst, Wuhan 430074, Peoples R China
来源：
FRESENIUS ENVIRONMENTAL BULLETIN | 2009年 / 18卷 / 05期
关键词：
hexachlorobenzene (HCB); titanium dioxide (TiO2); photodegradation; preadsorbance; photocatalysis; TIO2-ASSISTED PHOTODEGRADATION; PHOTOCATALYTIC DEGRADATION; DISPERSIONS; PHOTOLYSIS; OXIDATION; KINETICS; TITANIA; PYRENE; DYES;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Hexachlorobenzene (HCB), one of the persistent organic pollutants (POPs), is a refractory semi-volatile organic compound. Treatment of HCB-contaminated wastewater by traditional method is essentially impossible. In this study, the photocatalytic oxidation of HCB pre-adsorbed on TiO2 was examined in aqueous suspension under UV light irradiation. Some factors affecting the photodegradation rate of HCB were also studied. The results indicated that HCB pre-adsorbed on TiO2 underwent a fast photocatalysis. In the process, the pH of the dispersion had little effect on the photooxidation rate of HCB catalyzed by TiO2 whereas the surface coverage. ratio of HCB/Ti2O, addition of Fe3+ and H2O2 affected the photo oxidation rate significantly.
引用
收藏
页码：628 / 632
页数：5
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