La-Ti/SnO2-Sb/RuO2-Co电极制备及其处理垃圾渗滤液研究  

Preparation of La-Ti/SnO2-Sb/RuO2-Co Electrode and Its Treatment of Landfill Leachate

作　　者：杨小亮 魏琛 盛贵尚 张显宇 李琬黎 YANG Xiao-liang;WEI Chen;SHENG Gui-shang;ZHANG Xian-yu;LI Wan-li(College of Civil Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学土木工程学院

出　　处：《广州化学》2019年第4期13-19,共7页Guangzhou Chemistry

基　　金：土木工程一流学科（QYNYL[2017]0013）;贵州省科技计划项目（黔科合SY字[2014]3045号、黔科合基础[2018]1125号）;贵州大学引进人才项目（贵大人基合字[2015]18号）

摘　　要：以纯钛为基体材料,并以热氧化的方式制备La-Ti/SnO2-Sb/RuO2-Co电极,采用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)及X-射线能量色散谱(EDS)对电极涂层表面形貌和晶体结构进行表征。采用制备的La-Ti/SnO2-Sb/RuO2-Co电极作为阳极,不锈钢为阴极,构建电化学反应器,对老龄垃圾渗滤液进行降解。结果表明在电流密度为65 mA/cm^2、Cl-浓度为4 500 mg/L、初始pH=9和反应时间为6 h的最佳反应条件下,La-Ti/SnO2-Sb/RuO2-Co电极对NH3-N和COD的去除率分别达到86.5%、61%。La-Ti/SnO2-Sb/RuO2-Co electrodes were prepared by thermal oxidation using pure titanium as the matrix material.X-ray diffractometry(XRD),scanning electron microscopy(SEM)and X-ray energy dispersion were used.The surface morphology and crystal structure of the electrode coating were characterized by EDS.The prepared La-Ti/SnO2-Sb/RuO2-Co electrode was used as the anode and the stainless steel was used as the cathode to construct an electrochemical reactor to degrade the aged landfill leachate.The results show that the La-Ti/SnO2-Sb/RuO2-Co electrode under the optimal reaction conditions of current density of 65 mA/cm^2,Cl-concentration of 4 500 mg/L,initial pH=9 and reaction time of 6 h.The removal rates of NH3-N and COD were 86.5%and 61%,respectively.

关 键 词：热氧化法 La-Ti/SnO2-Sb/RuO2-Co电极 垃圾渗滤液 电化学氧化法 

分 类 号：X703.1[环境科学与工程—环境工程]