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光助Fenton氧化反应降解染料罗丹明B
引用本文:郑怀礼,相欣奕.光助Fenton氧化反应降解染料罗丹明B[J].光谱学与光谱分析,2004,24(6):726-729.
作者姓名:郑怀礼  相欣奕
作者单位:重庆大学化学化工学院,重庆,400044
基金项目:重庆市重点攻关项目(编号 :751 7 0 3)资助
摘    要:研究了不同光源条件下光助Fenton反应催化氧化降解有机染料罗丹明B脱色情况及相关机理。内容包括 :不同光源、初始反应溶液酸度、反应时间、Fenton试剂浓度、初始染料溶液浓度等因素对光助Fen ton反应的影响 ,确定了方法的优化条件 ,并讨论了光助Fenton反应的反应机理。研究表明 :在 pH =3 5的条件下 ,4 5 0W高压汞灯照射以及较强太阳光照射的条件均可以明显加快Fenton法催化氧化降解罗丹明B溶液的过程 ,色度脱除率可达到 99%以上 ,COD也得到有效去除

关 键 词:光助Fenton反应  罗丹明B  染料  光催化氧化  脱色
文章编号:1000-0593(2004)06-0726-04
修稿时间:2003年12月16

Photo-Fenton Oxidation Processes Used in the Degradation of Rhodamine B
ZHENG Huai li,XIANG Xin yi College of Chemical and Chemistry Enigeering,Chongqing University,Chongqing ,China.Photo-Fenton Oxidation Processes Used in the Degradation of Rhodamine B[J].Spectroscopy and Spectral Analysis,2004,24(6):726-729.
Authors:ZHENG Huai li  XIANG Xin yi College of Chemical and Chemistry Enigeering  Chongqing University  Chongqing  China
Institution:College of Chemical and Chemistry Engineering, Chongqing University, Chongqing 400044, China.
Abstract:Photo Fenton method, the combination of Fenton reagent with light, is an efficient method for waste water treatment. In this paper, the degradation of rhodamine B (a kind of organic dye) using this method was researched. Through numerous experiments, the influences of five parameters including light source, pH, reaction time, dosage of Fenton reagent, and initial dye concentration were investigated intensively. In this paper, the mechanisms of this reaction have also been probed. It is concluded from the experiments that the irradiations of 450 W high pressure mercury lamp and sun light can both accelerate the process of degradation effectively. Under optimal conditions, the overall color removal was more than 99 9% within 45 min; COD can be removed effectively at the same time.
Keywords:Photo-Fenton Reaction  Rhodamine B  Dye  Photo-enhanced oxidation  Degradation
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