光助Fenton试剂氧化降解染料直接耐晒黑G的研究

Study on Photo-Fenton Reagent Oxidation Processes Used in the Degradation of Direct Fast Light Black G

文章研究了影响Fenton试剂氧化降解持久性有机污染物直接耐晒黑G的因素,如光源的选择、初始pH值、H2O2的用量、Fe2+的用量、阳离子交换树脂载体的引入等,通过研究确定了各因素的优化条件。研究结果表明:太阳光照能有效的促进直接耐晒黑G染料的降解脱色,大大缩短反应时间;引入阳离子交换树脂后,可增强Fenton氧化反应的活性,降解效果更好。

Photo-Fenton reagent can degradate dye well. In the present paper, some main factors such as different light sources, the initial pH value, the dosage of Fe^2＋ and H2O2, the cation-exchange resin, etc. , which have great influences on degradation, were researched. Through numerous experiments, the optimum condition for dye direct fast light black G degradation was given. The results of the research were as follows： the sunlight can promote this reaction apparently, and the reaction time can greatly be shortened; Under optimal conditions, after the cation-exchange resin was introduced into the Fenton system, the activation of Fenton reagent for degradation reaction was enhanced to a great extent, the degradation effect of direct fast light black G was better, and the ratio of color removal was more than 94% within 40 mir.