UV-TiO_2-Fenton光催化降解敌百虫农药废水的研究  

Study on the photocatalytic degradation of trichlorfon pesticides wastewater by using UV-TiO_2-Fenton reagent

作　　者：彭延治[1] 徐明芳[2] 曾常军 陈心满[1] 

机构地区：[1]暨南大学水生研究所,广东广州510632 [2]暨南大学生物工程系,广东广州510632 [3]广州建兴光电(广州)有限公司,广东广州510663

出　　处：《工业水处理》2006年第6期33-36,共4页Industrial Water Treatment

基　　金：广东省科技攻关资助项目(2KM02501G)

摘　　要：研究了UV-TiO2-Fenton体系光催化降解敌百虫农药。结果表明:UV-TiO2-Fenton有极强的氧化性,能有效地降解敌百虫农药。当敌百虫农药浓度为0.1 mmol/L,反应液起始pH为3.25,通空气量为2 L/min,TiO2质量浓度为2 g/L,Fe3+用量为0.10 mmol/L,H2O2用量为2 mmol/L,光照时间为2 h时,敌百虫农药有机磷的降解率为92.50%,同时发现Cl-、SO42-和H2PO4-等无机阴离子对敌百虫农药的光催化降解产生抑制作用。还探讨了起始pH、无机阴离子,以及电子接受体Fe3+等对光催化降解敌百虫农药的影响。The photocatalytic degradation of trichlorfon pesticides by using UV- TiO2- Fenton reagent has been studied. The results show that UV- TiO2- Fenton reagent is excellent at oxidation and the effect of degradation of trichlorfon pesticides is more effective. The degradation efficiency of trichlorfon pesticides is up to 92.50%, when the concentration of trichlorfon pesticides is 0.1 mmol/L, the original pH value of the reaction solution is 3.25, the air-flow is 2 L/rain, the amount of TiO2 is 2 g/L, the amount of Fe^3＋ is 0.1 mmol/L, the amount of H2O2 is 2 mmol/L and the radiation time is 2 h. Meantime, the photocatalytic degradation of trichlorfon pesticides is inhibited in the presence of abio-anion such as Cl^-, SO4^2- and H2PO4^- and so on. Various factors, such as the original pH value, abioanion, the acceptor of electron Fe^3＋ that influence the photocatalytic degradation of trichlorfon pesticides, have been studied.

关 键 词：光催化降解 敌百虫 有机磷农药 

分 类 号：X703.1[环境科学与工程—环境工程]