Ti/α-PbO_2/β-PbO_2电极电催化氧化处理苯酚废水  

Electrocatalytic Oxidation Treatment of Phenol Wastewater by Ti/α-PbO_2/β-PbO_2 Electrode

作　　者：王鸿辉[1] 杨卫华[1] 黄龙[1] 黄婷婷[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2008年第2期263-266,共4页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金计划资助项目(D0540003)

摘　　要：采用电催化氧化法,以自制Ti/α-PbO2/β-PbO2电极为阳极,在室温条件下对苯酚模拟废水进行降解研究,探讨电流密度、电极间距、pH值及苯酚初始质量浓度对苯酚降解效率的影响规律.结果表明,在电流密度为600 A.m-2,电极间距为1.0 cm,pH值为3,苯酚初始质量浓度为100 mg.L-1的条件下,苯酚降解效率达92%以上.紫外光谱等实验结果表明,苯酚在氧化降解过程中会产生苯醌等中间产物,苯酚及其中间产物最终被矿化为CO2和H2O.Treatment of wastewater containing phenol using electrocatalytic oxidation method was studied at room temperature. In the oxidation-degradation process, Ti/α-PbO2/β-PbO2 electrode prepared by electrodeposition was used as anode. The effects of various conditions on the degradation efficiency, such as current density, electrode distance, pH and initial concentration of phenol, were investigated in this paper. Results show that the degradation rate was over 92% when the optional conditions were as follows： J= 600 A · m^-2 , d=1. 0 cm, pH=3, ρ0 =100 mg · L^-1. In addition, ultraviolet spectrum method and other experiment were employed to investigate the oxidation process of phenol. The experimental results indicate that benzoquinone and other intermediate products were generated in the degenerating process. Furthermore, phenol and the intermediate products were mineralized to CO2 and H2O finally.

关 键 词：电催化氧化 Ti/α-PbO2/β-PbO2电极 苯酚 降解 

分 类 号：O643.32[理学—物理化学] X703.1[理学—化学]