Fenton氧化法降解微囊藻毒素MC-LR的研究  

Study on the Degradation of Microcystins MC-LR with the Method of Fenton Oxidation

作　　者：董泽琴 张琳[1,3] 张维 杨再荣[1,3] 

机构地区：[1]贵州省环境科学研究设计院,贵州贵阳550002 [2]贵州省水污染控制与资源化技术研究重点实验室,贵州贵阳550002 [3]贵州师范大学地理与环境科学学院,贵州贵阳550001

出　　处：《安徽农业科学》2010年第21期11658-11660,共3页Journal of Anhui Agricultural Sciences

基　　金：贵州省社会发展科技攻关项目(黔科合S字[2007]1007号);贵州省优秀科技教育人才省长专项资金项目(黔省专合字[2007]108号);贵州省高层次人才科研条件特助经费项目(TZJF-2007-15)

摘　　要：[目的]研究Fenton法氧化降解微污染水体水中微囊藻毒素MC-LR的效果。[方法]采用Fenton氧化法对微污染水中MC-LR的降解效果进行试验研究,考察H2O2与Fe2+投加浓度、pH值、藻毒素初始浓度、反应时间等各种因素对降解效果的影响。同时,对影响水中MC-LR的Fenton氧化过程的相关因素进行初步探讨。[结果]在藻毒素MC-LR浓度0.31mg/L时,试验得到的最佳去除工艺条件为H2O2起始浓度0.30mmol/L,[H2O2]/[FeSO4]摩尔比30∶1,pH值4.0,反应温度(24±2)℃,反应60min后,去除率可达到90.30%。[结论]Fenton法在一定反应条件下可有效降解微囊藻毒素MC-LR。[Objective] The efficiency of the Fenton oxidation on the degradation of microcystins MC-LR in slightly polluted water was analyzed.[Method] The experiment in the effect of the Fenton oxidation on the degradation of MC-LR in slightly polluted water was conducted and the concentration of H2O2 and Fe2＋-adding,the pH value,the initial concentration of microcystin,the reaction time and others affecting the degradation effect was measured.Meanwhile,the related factor related to the process of Fenton oxidation degrading MC-LR in water was also discussed.[Results] The optimal condition was the initial concentration of H2O2 was 0.30 mmol/L,the molar ratio of [H2O2]/[FeSO4] was 30∶1,the pH value was 4.0,the reaction temperature was（24±2）℃ and the reaction time was 60 minutes while the concentration of microcystin MC-LR was 0.31 mg/L,so that the removal rate of MC-LR was 90.30%.[Conclusion] The microcystin MC-LR could be effectively degraded through the Fenton Oxidation under certain condition.

关 键 词：FENTON氧化法 MC-LR降解 反应参数 

分 类 号：X172[环境科学与工程—环境科学]