Fenton试剂氧化法降解三氯生的研究

Study on Oxidation Degradation Triclosan by Fenton Reagent

三氯生具有很好的广谱、持久、高效的抑菌效果,被普遍作为添加剂使用,其在自然条件下会转化成致癌物等多种有毒有害物质.大量的使用和不当的处理,致使其对环境造成严重的污染,带来很大的危害.通过研究Fenton试剂氧化降解三氯生,考察了初始浓度、pH值、Fe2+浓度、H2O2浓度、反应时间对其降解的影响,确定最佳降解工艺条件.实验结果表明:当三氯生浓度为140mg.L-1时,pH值为3,Fe2+浓度为1.2mmol.L-1,H2O2为70mmol.L-1时,三氯生降解率达到最大达78.12%.

Triclosan has a good broad-spectrum,long-lasting,efficient antibacterial effect,as an additive,under natural conditions it will be converted into carcinogens and other toxic and hazardous substances.A lot of use and improper handling it will cause serious environmental pollution and a great deal of harm.The effects of the initial concentration,pH value,Fe2 + concentration,H2O2 concentration and reaction time on the triclosan degradation efficiency were studied by Fenton Oxidation for optimizing these factors in this paper.The results showed that the highest triclosan degradation rate was 78.12% under these conditions of the triclosan concentration of 140mg / L,pH value of 3,Fe2+ concentration of 1.2mmol / L and H2O2 of 70mmol / L.