Ir-Ru-Sn 掺杂电极电催化法处理苯酚废水的实验研究.pdf

第28卷第7期 化 学 研 究 与 应 用 Vol.28,No.7 　 化 学研 究与应 用 第28卷　 2016年7月 ChemicalResearchandApplication July,2016 文章编号:1004-1656(2016)07-0942-05 Ir-Ru-Sn掺杂电极电催化法处理苯酚废水的实验研究 * 范荣桂 ,董　 雪,戴　 艺,王权程,高海娟 (辽宁工程技术大学环境科学与工程学院,辽宁　 阜新　 123000) 摘要:实验研究了以Ir-Ru-Sn掺杂电极为阳极、不锈钢板为阴极的电催化降解模拟苯酚废水。 分别考察了废 水初始pH值、极板电压、极板间距、初始液的浓度及曝气等因素对电催化处理效果的影响。 实验结果表明, Ir-Ru-Sn掺杂电极对苯酚的电催化降解具有很好的适应性;降解特征为表观一级动力学;曝气的存在可以有 效提高传质动力,但对苯酚的降解率的提高贡献不大。 采用该电极时适宜的工艺条件是:初始液的pH值为 3,极板电压为36 V,极板间距为1．0cm,反应时间为180 min,在此条件下苯酚的去除率达到了97．97%以上。 关键词:掺杂电极;电催化;苯酚;降解 中图分类号:O643.36 　 　 文献标志码:A Experimental research on the degradation of phenol containing wastewater with Ir-Ru-Sn doped electrode FAN Rong-gui,DONG Xue,DAI Yi,WANG Quan-cheng,GAO Hai-juan (College of Environmental Sciences and Engineering,Liaoning Technical University,Fuxin 123000,China) Abstract:The degradation of stimulated phenol wastewater by electrocatalysis which took Iridium-Ruthenium-Stannum(Ir-Ru-Sn) doped electrode as anode andstainlesssteelplateascathodewasstudiedintheexperiment.Theinfluencesof initialpH,platevolt- age,plate distance,initial solution concentration aeration etc.on the performance of electrocatalysis were investigated respectively. The experimental results show that,the Ir-Ru-Sn doped electrode had very good adaptability to the electrocatalytic degradation of phenol;the degradation fit first-order kineticsequation;theaerationcouldincreasethemasstransferpower effectively,but contribu- tedlittletotheincreaseofphenoldegradationrate.Theappropriateprocessconditionsforthiselectrodewere:thepHvalueof initial solution was3,theplatevoltagewas36V,theplatedistancewas1．0cm,andthereactiontimewas180min,wh