二氧化钛光催化降解微囊藻毒素的研究进展  

Photocatalytic Degradation of Microcystins by Titanium Dioxide

作　　者：张飞白[1,2] 肖羽堂[1,2] 

机构地区：[1]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏南京210008 [2]南开大学天津市城市生态环境修复与污染防治重点实验室,天津300071

出　　处：《中国给水排水》2009年第4期19-22,28,共5页China Water & Wastewater

基　　金：中国科学院创新工程试点科研经费项目(07SL011008);天津市城市生态环境修复与污染防治重点实验室开放基金课题(TJcshj2007-10-11)

摘　　要：蓝藻所产生的微囊藻毒素具有急性和慢性毒性,会对饮用水的安全保障带来威胁。二氧化钛光催化氧化技术能够有效破坏水体中的微囊藻毒素,并且其降解产物没有毒性或生物毒性极低。介绍了目前光催化降解微囊藻毒素的研究进展,包括微囊藻毒素的生物化学性质、目前的处理方法、降解的机理和影响因素、降解产物及其毒性和可见光催化降解等方面的内容。今后应重点研究微囊藻毒素的降解途径和具有良好可见光催化性能的二氧化钛光催化剂,以及开发应对水体微囊藻毒素污染和饮用水安全保障的二氧化钛光催化新技术。Microcystins produced by cyanobacteria pose a threat to potable water security due to their acute and chronic toxicity. The titanium dioxide （TiO2） photocatalytic oxidation can effectively destroys microcystins in water, and the degradation products are non-toxic or their biotoxicity is very low. The current studies about photocatalytic degradation of microcystins are introduced, including biological and chemical characters of microcystins, current treatment methods, degradation mechanism and influence factors, degradation products and their toxicity as well as visible light photocatalytic degradation. The future studies should be emphasized on the principal pathway for microcystins degradation and TiO2 photocatalysts with fine performance under visible light irradiation as well as the development of TiO2 photocatalytic technology for the microcystins polluted water source and potable water security.

关 键 词：饮用水 微囊藻毒素 光催化 二氧化钛 

分 类 号：TU991.2[建筑科学—市政工程]