邵天元,李新宝,张宝锋,张家兴,李国亭,赵旭.电芬顿法处理重金属络合物Ni-EDTA的研究[J].环境科学学报,2015,35(3):745-749
电芬顿法处理重金属络合物Ni-EDTA的研究
- Removal of Ni-EDTA by Electro-Fenton process
- 基金项目:国家自然科学基金优秀青年基金项目(No.51222802,21377148)
- 邵天元
- 1. 华北水利水电大学环境与市政工程学院, 郑州 450011;2. 中国科学院生态环境研究中心环境水质学实验室, 北京 100085
- 李新宝
- 华北水利水电大学环境与市政工程学院, 郑州 450011
- 张宝锋
- 中国科学院生态环境研究中心环境水质学实验室, 北京 100085
- 张家兴
- 1. 华北水利水电大学环境与市政工程学院, 郑州 450011;2. 深圳大学化学与化工学院, 深圳 518060
- 李国亭
- 华北水利水电大学环境与市政工程学院, 郑州 450011
- 赵旭
- 中国科学院生态环境研究中心环境水质学实验室, 北京 100085
- 摘要:本文首先研究了电絮凝与电芬顿对Ni-EDTA去除效率对比,结果发现电絮凝对Ni-EDTA去除效率较低.通过电化学阳极溶解产生Fe2+,外加H2O2反应的阳极电芬顿过程可有效去除Ni-EDTA.详细考察Ni-EDTA初始浓度、电流密度、pH值及H2O2投加量对Ni-EDTA去除率的影响.结果表明,电芬顿方法处理Ni-EDTA络合物其初始浓度越低,去除效果越好.反应最佳pH值为3.5,H2O2投加量在一定条件下存在最优值,而络合物的去除率随着电流密度的增加而提高.对Ni-EDTA去除过程进行了分析.
- Abstract:Treatment of Ni-EDTA complexes was performed by electro-coagulation and electro-Fenton Processes. The results indicated that Ni-EDTA was slightly removed by electro-coagulation process. However Ni-EDTA can be efficiently removed by electro-Fenton process with iron anode and the addition of H2O2. The effects of initial Ni-EDTA concentration, current density, pH value and different concentrations of H2O2 on the Ni-EDTA removal were investigated. The results indicated that removal of Ni-EDTA was favourable in pH 3.5 and the lower initial concentration of Ni-EDTA. The optimal H2O2 dosage existed, and the removal efficiency of Ni-EDTA increased with the current density. The removal process of Ni-EDTA was discussed.
摘要点击次数: 2048 全文下载次数: 5253