环境工程学报2017，Vol.11Issue(7)：4003-4009,7.DOI:10.12030/j.cjee.201605160
多羧酸改良硫代光-Fenton处理有机染料废水
Degradation of organic dye wastewater using polycarboxylic acid modified SR-Photo-Fenton
摘要
Abstract
This study was designed to investigate the degradation performance of acid orange Ⅱ in a persulfate or sulfite modified photo-Fenton system using EDDS (N,N'-ethylenediamine disuccinic acid) as the complexing agent of Fe(Ⅲ).The effects of initial pH,and the concentration of persulfate or sulfite and Fe(Ⅲ)-EDDS,were investigated and the optimal system for acid orange Ⅱ degradation was obtained.According to the results,under the conditions of 5 mmol · L-1 Na2SO3 and 0.05 mmol · L-1 Fe(Ⅲ)-EDDS in a Na2SO3-Fe(Ⅲ)-EDDS system,the removal efficiency of acid orange Ⅱ reached 98％ at pH 3.0 after 60 min of degradation.While in the Na2S2Os-Fe(Ⅲ)-EDDS system,under the conditions of 10 mmol · L-1 Na2S2Os and O.50 mmol · L-1 Fe(Ⅲ)-EDDS,acid orange Ⅱ removal efficiency was 99％ at pH 7.0 after 120 min of degradation.It was observed that there is an optimum concentration of Fe(Ⅲ)-EDDS for orange Ⅱ degradation in both systems.The degradation rate of acid orange Ⅱ declined with increase in the initial pH in the Na2SO3-Fe (Ⅲ)-EDDS system.For the Na2S2Os-Fe(lⅢ)-EDDS system,the degradation rate of orange Ⅱ decreased when the pH was higher or lower than 7.0.In the Na2SO3-Fe(Ⅲ)-EDDS system,the degradation rate of acid orange Ⅱ increased with increase in the concentration of Na2SO3,and in the Na2S2Os-Fe(Ⅲ)-EDDS system,it had an optimum pH.Either increase or decrease of the concentration led to decrease of the degradation efficiency.关键词
Fe(Ⅲ)-EDDS/光-Fenton/降解/橙黄Ⅱ/过硫酸钠/亚硫酸钠Key words
Fe (Ⅲ)-EDDS/photo-Fenton/degradation/Orange Ⅱ/persulfate or sulfite分类
资源环境引用本文复制引用
罗梦琦,韦朝帅,张晓清,胡棋智,黄闻宇..多羧酸改良硫代光-Fenton处理有机染料废水[J].环境工程学报,2017,11(7):4003-4009,7.基金项目
国家自然科学基金资助项目(21367003) （21367003）
广西自然科学基金资助项目(2014GXNSFBA118217) （2014GXNSFBA118217）
广西教育厅高校科研项目(YB2014012) （YB2014012）
