铁氧化物联合低含量亚铁离子催化H_2O_2降解偶氮染料活性黑5  

DEGRADATION OF AZO DYE REACTIVE BLACK 5 BY LOW FERROUS IONS CONCENTRATION CATALYZED H_2O_2 IN COMBINATION WITH WASTE IRON OXIDE

作　　者：王艳[1] 宋祖德[1] 冯明明[1] 孔洁[1] 郭玉[1] 王云[1] 

机构地区：[1]安徽科技学院环境科学与工程系,安徽凤阳233100

出　　处：《水处理技术》2014年第2期35-38,共4页Technology of Water Treatment

基　　金：安徽省教育厅自然科学基金(KJ2012B054);高等学校人才引进专项基金(ZRC2012328);国家大学生创新创业训练项目(201210879001)

摘　　要：采用铁污泥（铁氧化物）／Fe^2＋／H2O2法对模拟染料废水进行处理。以活性黑5染料溶液为研究对象，比较了不N氧化体系下活性黑5的脱色效果，其中铁氧化物／Fe^2＋／H2O2对活性黑5的脱色效果最佳；考察了溶液pH、H2O2含量、铁氧化物投加量、染料初始含量对脱色效率的影响。结果表明，脱色反应在60min内基本完成，铁氧化物／Fe^2＋/H2O2能在较宽的pH范围内保持较好的脱色效果；增加H2O2含量和铁氧化物投加量均可以提高活性黑5溶液脱色率，但H2O2质量浓度超过5．78mg／L后效果提高不明显；在15～450mg／L内，铁氧化物投加量的增加对脱色效果的影响不显著；染料脱色率随染料初始含量的升高而降低。The iron sludge （iron oxide）/Fe^2＋/H202 was proposed to deal with simulated dye wastewater treatment. As the research object, the decolorization rate of Reactive Black 5 dye solution was investigated under different oxidation system. The result show that Reactive Black 5 decolorization rate reached maximum under the iron oxide/Fe^2＋/H2O2 system. At the same time, The effect of important operational parameters, including pH, H2O2 concentration, iron oxide dosage and dye initial concentration on the decolorization of dye was investigated. The results show that the decolorization reaction basically completed within 60 min, and the iron oxide/Fe^2＋/H2O2 system could keep better decolorization rate in a wide pH range. The decolorization rate of Reactive black 5 solution increased with increasing the H2O2 concentration and iron oxide dosage, but the decolorization rate was increased not obviously when the H2O2 concentration was more than 5.78 mg/L. The iron oxide dosage on decolorization effect was not significant within the range of 15-450 mg/L. Dye decolorization rate decreased with increasing initial dye concentration.

关 键 词：废弃铁氧化物 低含量铁 活性黑5 脱色 

分 类 号：X788[环境科学与工程—环境工程]