Fenton光催化降解草甘膦生产废水研究  

Photocatalytic Degradation of Glyphosate Wastewater by Fenton

作　　者：顾彦[1] 何秋芬[1] 赵小蓉[1] 

机构地区：[1]三峡大学环境工程系,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2009年第1期89-93,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：同济大学长江水环境教育部重点实验室开放基金(YRWEF06001);国家重点基础研究发展计划(973)(2008CB417206);湖北省高等学校优秀中青年科技创新团队基金资助(T200703)

摘　　要：以Fenton(Fe3+/H2O2)光催化降解草甘膦废水,跟踪体系化学需氧量(Chemical Oxygen De-mand,COD),研究了不同条件下(光源、试剂浓度和酸度等)废水光催化氧化特性及光催化反应条件.探讨了在太阳光及紫外光照射条件下Fenton试剂组分Fe3+与H2O2不同投料比、投料量、介质酸度对光催化降解废水的影响.结果表明,利用太阳光、紫外光能显著提高废水降解速率;太阳光照射条件下,Fe3+/H2O2为1∶10投量比,pH=3时,对废水COD降解效果最佳,COD去除率达82%.Glyphosate wastewater was degraded by Photo-Fenton （Fe^3＋/H2O2）; and the chemical oxygen demand of the system has been tracked. Sunlight irradiation and ultraviolet irradiation by monitoring the chemical oxygen demand （COD） using Fenton reagent photocatalytic mechanism in order to optimize conditions for photocatalytic reaction. Research on the effect of the ratio of Fe^3＋ to H2O2 in the Fenton reagent and medium acidity in the reaction solution was also taken. It has been proved that sunlight irradiation and ultraviolet irradiation can improve the degradation rate notably. Under sunlight irradiation, with ratio of Fe^3＋ and H2O2 of the Fenton-like reagent 1 ： 10, and medium acidity about 3.0, the degradation reaction reaches the best effect with COD degradation rate of 82.0%.

关 键 词：FENTON 光催化 降解 草甘膦 

分 类 号：O644.14[理学—物理化学] X703[理学—化学]