Ti/Ti_(4)O_(7)电极电化学氧化焦化废水中有机物  

Ti/Ti_(4)O_(7)electrode for electrochemical oxidation of organic compounds in coking water

作　　者：宿素玲 于冀芳[3] 胡亚伟[4] 余慧君 郭东芝 XU Suling;YU Jifang;HU Yawei;YU Huijun;GUO Dongzhi(Hebei Special Equipment Supervision and Inspection Institute,Shijiazhuang 050000,Hebei Province,China;Hebei Pressure Equipment Testing and Evaluation Technology Innovation Center,Shijiazhuang 050000,Hebei Province,China;School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Department of Chemical and Environmental Engineering,Hebei Chemical and Pharmaceutical Vocational Technology College,Shijiazhuang 050026,Hebei Province,China)

机构地区：[1]河北省特种设备监督检验研究院,河北石家庄050000 [2]河北省承压设备检测评价技术创新中心,河北石家庄050000 [3]中国矿业大学(北京)化学与环境工程学院,北京100083 [4]河北化工医药职业技术学院化学与环境工程系,河北石家庄050026

出　　处：《化学工程》2024年第10期45-51,共7页Chemical Engineering(China)

基　　金：河北省市场监督管理局基金资助项目(2021ZC17)。

摘　　要：EAOP(电化学高级氧化)作为一种前景广阔的技术,广泛应用于工业水处理领域,其中阳极材料是EAOP的核心。采用等离子喷涂法制备多孔Ti/Ti_(4)O_(7)电极,对其性能进行结构表征和电化学测试。考察电流密度、通量、电解质种类对处理效果的影响,并对电化学氧化过程及污染物氧化机理进行分析。在最佳实验条件电流密度为15 mA/cm^(2)、通量为400 L/(m^(2)·h)下,选择0.1 mol/L Na_(2)SO_(4)为支持电解质,废水中COD(化学需氧量)的去除率为75.3%,去除1 kg COD的能耗为110.14 kW·h,能够有效去除水中PAHs(多环芳烃)。因此,制备的Ti/Ti_(4)O_(7)电极在电化学氧化实际废水中有机物的工程实践方面具备很强的应用前景。EAOP(electrochemical advanced oxidation processes)is widely applied in the field of industrial wastewater treatment,and the anode material is a key factor that affects the EAOP treatment efficiency.Porous Ti/Ti_(4)O_(7)electrode was prepared by spraying Ti_(4)O_(7)powder onto porous Ti substrate by plasma spraying method.The properties of Ti/Ti_(4)O_(7)electrodes were characterized by XRD(X-ray diffractometry),SEM(scanning electron microscopy),EDS(energy dispersive spectroscopy)and mercury injection analysis.The effect of current density,membrane flux and electrolyte type on treatment efficiency was examined.The electrochemistry oxidation process and mechanism were analyzed.Under current density of 15 mA/cm^(2)and membrane flux of 400 L/(m^(2)·h),0.1 mol/L Na_(2)SO_(4)as supporting electrolyte,the Ti/Ti_(4)O_(7)electrode has a COD removal rate of 75.3%and the energy consumption of removal 1 kg COD was 110.14 kW·h,which can effectively remove PAHs(polycyclic aromatic hydrocarbons)in water.The Ti/Ti_(4)O_(7)electrode prepared demonstrates satisfactory performance and strong stability in actual organic wastewater,and has a strong potential for application in the field of engineering practice.

关 键 词：Ti/Ti_(4)O_(7)电极 电化学氧化 废水 化学需氧量 多环芳烃 

分 类 号：O646.5[理学—物理化学]