高铁酸盐/Al(OH)_3对偶氮类染料的降解脱色研究  

Study on Treating Azo Dyes Waste Water by FeO_4^(2-)/Al(OH)_3 Coagulant

作　　者：谢鸿芳[1] 郑淑英[1] 陈巧平[1] 郑林禄[1] 林智虹[2] 陈震[1,2] 

机构地区：[1]宁德师范学院化学系,福建宁德352100 [2]福建师范大学化学与材料学院,福建福州350108

出　　处：《福建师范大学学报（自然科学版）》2011年第4期112-116,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省发展和改革委员会资助项目(闽发改资2008762);宁德师范学院"服务海西建设"科研经费资助项目(2010H302);宁德师范学院校级科研资助项目(2010309);宁德市科技局科技计划资助项目(20100027)

摘　　要：以电化学循环伏安法研究了FeO42-、甲基橙、酸性铬蓝以及铬黑T等偶氮类染料的氧化还原电位.实验结果表明FeO42-有足够高的氧化电位来氧化偶氮类染料中的生色基团.用紫外-可见光谱法分析了FeO42-对甲基橙、酸性铬蓝、铬黑T等偶氮类染料的降解脱色行为.经高铁酸盐处理后偶氮染料类废水溶液中的有机成分逐渐减少,脱色率高于90%.经FeO42-/Al(OH)3混凝剂处理偶氮染料类废水,CODCr去除率可以达到60%以上,脱色率达100%.I-V cyclic voltammogram,UV were used to discuss organic matter degradation.Results of I-V cyclic voltammograms showed the redox peaks corresponding to organic substance were not observed in the treated solutions.Instead,a couple of Fe3＋/Fe2＋ redox peaks were observed.IR results indicated that organic substance was decomposed.The degradation and the decolorization of dyes were confirmed by the measurements of visible spectrum and chemical analysis.The decolorization of azo dyes waste water was close to 100%,and the CODCr remove rate after treatment by FeO42-/Al（OH）3 coagulant was over 60%.After treatment of ferrate,the organic part of azo dyes wastewater gradually reduced,and the rate of decoloration was more than 90%.After azo dyes wastewater was treated by the FeO42-/Al（OH）3 coagulant,the removal rate of CODCr was more than 60% and the rate of decoloration reached 100%.

关 键 词：偶氮染料 废水处理 高铁酸盐 电化学 

分 类 号：Q644.1[生物学—生物物理学]