环境工程学报2012，Vol.6Issue(1)：57-62,6.
TiO_2光催化降解水中土霉素的动力学研究
Kinetics study on photocatalytic degradation of oxytetracycline（OTC） in water by nano titanium suspended system
摘要
Abstract
The occurrences of antibiotics in aquatic environments have attracted much concern from the public.The photocatalytic degradation of OTC in water by UV/TiO2 was studied in a high pressure mercury lamp.Effects of the initial concentration,different reaction condition,TiO2 dosage,solution pH,DOM and NO-3 on the degradation rates were investigated.The results showed that the removal of OTC by photocatalytic was effective.The photodegradation rate in aqueous solution followed first-order kinetics.And after 90 minutes,74% of TOC was removed.The photodegradation rate constant ranged from 0.0619 min-1 to 0.0130 min-1 in the OTC concentration from 30 mg/L to 90 mg/L.Increasing TiO2 dosage led to the photodegradation rate constant increasing initially,followed by decreasing.Reduction of the rate constant was observed when pH increasing.It can also be affected by DOM and NO-3 in aqueous solution.关键词
土霉素/TiO2/光催化/光降解速率常数Key words
oxytetracycline/titanium dioxide/photocatalytic/photodegradation rate constant分类
资源环境引用本文复制引用
黄丽萍,陈东辉,黄满红,陈亮..TiO_2光催化降解水中土霉素的动力学研究[J].环境工程学报,2012,6(1):57-62,6.基金项目
上海市科委重点项目 （）
高等学校博士点专项科研基金 （）
中央高校基本科研业务费专项资金项目 （）
国家自然科学基金资助项目 （）
