新型双阳极电助芬顿体系降解抗生素机理研究  

Mechanism study on antibiotic degradation by novel dual-anodes electroassisted Fenton system

作　　者：李红 汪致成 黄昭玮 冷超群 吴德明 吴晓晖[2] 魏朋 黄明杰 周涛[2] LI Hong;WANG Zhicheng;HUANG Zhaowei;LENG Chaoqun;WU Deming;WU Xiaohui;WEI Peng;HUANG Mingjie;ZHOU Tao(Wuhan Tianyuan Environmental Protection Co.Ltd.,Wuhan 430090,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉天源环保股份有限公司,湖北武汉430090 [2]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2024年第10期136-141,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(22006045,22106159)。

摘　　要：构建了一类由铁片、铂片及碳毡阴极组成的新型双阳极电助芬顿氧化体系.其中,铁片-碳毡在较低电压下运行,溶出Fe^(2+)与投加的H_(2)O_(2)发生均相芬顿反应生成^(·)OH,^(·)OH快速降解矿化磺胺甲恶唑(SMX),同时产生的Fe^(3+)迁移至碳毡表面还原再生为Fe^(2+)继续参与反应.体系中Pt-碳毡在较高电压下运行,维持Fe^(2+)→Fe^(3+)→Fe^(2+)的高效循环利用,铁片则采用间歇式运行模式,防止Fe^(2+)过量溶出,实现铁泥量的减少.双阳极电芬顿体系能在低铁积累下成功处理实际医药行业抗生素废水,化学需氧量(COD)去除率为68.3%,废水可生化性显著提升.A novel dual-anode electro-assisted Fenton system consisting of iron sheet,platinum sheet and carbon felt cathode was constructed.Among them,the iron sheet-carbon felt was operated at lower voltage,and the dissolved Fe^(2+) and the added H_(2)O_(2) occurred homogeneous Fenton reaction to generate ·OH for rapid degradation of sulfamethoxazole(SMX),while the generated Fe^(3+)migrated to the surface of the carbon felt to be reduced to Fe^(2+) to participate in the reaction.In the system,the Pt-carbon felt was operated at higher voltage to maintain the efficient recycling of Fe^(2+)→Fe^(3+)→Fe^(2+),while the iron sheet adopted the intermittent operation mode to prevent the excessive dissolution of Fe^(2+) and realize the reduction of the amount of iron sludge.The dual-anode electro-assisted Fenton system could successfully treat antibiotic wastewater from actual pharmaceutical industry under low iron accumulation,with a chemical oxygen demand(COD) removal rate of 68.3% and a significant increase in wastewater biochemistry.

关 键 词：电芬顿 双阳极 铁循环 抗生素污染物 高级氧化技术 

分 类 号：X703[环境科学与工程—环境工程] X784