摘要
采用光催化氧化工艺考察了饮用水部分消毒副产物的光催化降解效果.结果表明,TiO2 薄膜催化剂在低压汞灯照射下能明显提高致癌致突变有机物的光降解速率,其中卤代烷烃的光催化降解较光降解提高了3～7倍,而烯烃和芳香类物质的光催化降解较光降解也提高了2～3倍.总地来说,不同物质的降解规律为苯乙烯的降解速率最大,邻甲酚其次,烯烃较烷烃的光催化降解速率有明显提高,芳香烯烃较脂肪烯烃的降解速率高,而氯代烷烃的光催化降解效果非常接近.
Photocatalysis technology was used to investigate its removal capability of disinfection by products(DBPs). The photocatalytic degradation rates of different compounds were obviously larger than those in photolytic degradation. They were 3～7 times for halogenated alkyls and 2～3 times for alkenes and aromatic compounds. Investigation of photocatalytic degradation orderliness show that cinnamene > o_cresol>alkenes >alkyls.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2005年第3期92-95,共4页
Environmental Science
基金
国家自然科学基金资助项目 (5 0 2 3 80 2 0 )
国家高技术研究发展计划 (863计划 )项目 (2 0 0 2AA612 5 0 )
关键词
光催化
消毒副产物
TIO2
光降解
饮用水
photocatalysis
photolysis
DBPs
TiO_2
photocatalysis
drinking water
