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《Environmental Science》 2007-01
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Photocatalytic Endocrine Disruptor 17β-Estradiol(E2) in Drinking Water by Nano Titanium Suspended System

LI Qing-song~1,GAO Nai-yun~1,MA Xiao-yan~1,WANG Li~1,ZHAO Jian-fu~1,LE Lin-sheng~2(1.State Key Laboratory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092,China;2.Shanghai Waterworks Shibei Co.Ltd,Shanghai 200086,China)  
Photocatalytic degradation of endocrine disruptor 17β-estradiol(E2)in drinking water by nano titanium(Degussa P-25) suspended system was studied in a low pressure mercury lamp batch photo-reactor.Effects of reaction pH,E2 concentration,applied TiO_2 dose,UV light power,H_2O_2,O_3 were investigated respectively.The results show that the removal of E2 was effectively,The rate of photodegradation in aqueous solution followed first-order kinetics.When TiO_2 was dosed as 200(mg/L),irradiated by a 14 W low pressure mercury vapor discharge lamp,the first order photodegradation rate constant of E2(initial concentration was 400 (μg/L)) in tap water was 0.018 min~(-1).The photodegradation rate constant of E2 was related to the influential factors mentioned above and that it can be affected by add H_2O_2、O_2.
【Fund】: 上海市科学技术委员会基础研究重点项目(05JC14059);; 国家高技术研究发展计划(863)项目(2002AA601130 2004AA649410)
【CateGory Index】: X703.1
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