环境工程学报2012，Vol.6Issue(3)：793-798,6.
亚铁羟基络合物还原转化水溶性偶氮染料
Reductive transformation of hydrophilic azo dye by ferrous hydroxy complex
摘要
Abstract
Azo dye was one of the most widely used dyes in printing technique,the decolorization of its effluent is a challenge in wastewater treatment.Decolorization process of wastewater by coagulation treatment may include the effect of ferrous iron reduction.In this study,ferrous hydroxy complex（ferrous hydroxy complex,FHC） with higher reduction activity than dissolved ferrous iron was prepared,and reductive transformation of water-soluble azo dyes was investigated by using five different types of hydrophilic azo dyes as target pollutants.The results show that reactive red X-3B,acid red GR,cationic red X-GRL are well decolorizated by FHC reduction,the decolorization rate can reach 90%when adding 89.6 mg/L of the FHC.And the dyes can be completely bleached by increasing the dosage continuously.The decolorization of neutral claret GRL is less effective,needing 313.6 mg/L of the FHC to reach 90% decolorization.134.4 mg/L of FHC can completely bleach direct fast scarlet 4BS,but the bleaching mainly owe to coagulation decoloration.The pH has an important effect on the reduction of FHC with optimum pH value range of 4 to 10.The study provides a new technology to treat hydrophilic dye,and it offers a theoretical basis for the decolorization of printing and dyeing wastewater by FHC.关键词
亚铁羟基络合物/偶氮染料/还原脱色/混凝脱色/印染废水Key words
ferrous hydroxyl complex/azo dye/reduction decoloration/coagulation decoloration/printing and dying industry wastewater分类
资源环境引用本文复制引用
冯勇,吴德礼,马鲁铭..亚铁羟基络合物还原转化水溶性偶氮染料[J].环境工程学报,2012,6(3):793-798,6.基金项目
国家自然科学基金资助项目 （）
同济大学优秀青年教师资助项目 （）
国家“863”高技术研究发展计划重点项目 （）
