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.
出处
《工业水处理》
CAS
CSCD
北大核心
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)
关键词
光催化降解
敌百虫
有机磷农药
photocatalytic degradation
trichlorfon
organophosphorous pesticides
作者简介
彭延治（1978-），2006年毕业于暨南大学，硕士。E-mail：xmxmxm2004@yahoo．com．cn。
