活性炭纤维阴极电-Fenton法降解艳红染料X3B

活性炭纤维阴极电-Fenton法降解艳红染料X3B Electro-Fenton Degradation of Reactive Brilliant Red X3B Using Activated Carbon Fiber Cathode 莫文艳 MO Wenyan 1 first-author 孙杰 SUN Jie 1 中南民族大学化学与材料科学学院/催化材料科学教育部重点实验室 中南民族大学化学与材料科学学院/催化材料科学教育部重点实验室 College of Chemistry and Material Science,South-Central University for Nationalities/Key Laboratory of Catalysis and Materials Science of Ministry of Education College of Chemistry and Material Science,South-Central University for Nationalities/Key Laboratory of Catalysis and Materials Science of Ministry of Education 采用活性炭纤维作为电-Fenton反应的充氧阴极来降解水中活性艳红染料X3B,运用扫描电镜、紫外可见光谱、总有机碳分析等手段系统考察了电极形貌、底物吸附、铁离子初始价态、曝气等影响因素.实验结果表明,X3B在活性炭纤维表面的吸附符合Langmuir等温吸附模型,而X3B的电-Fenton降解反应则符合准一级反应动力学;通入空气能显著提高X3B的降解反应速率和矿化率,铁离子价态对此则无明显影响;X3B能被有效矿化,210min内矿化率为75.9%,表观电流效率达57.2%. Activated carbon fiber was used as oxygen diffusion cathode of the Electro-Fenton reaction to degrade the reactive brilliant red X3B.The effects including the surface morphology of electrodes,adsorption of X3B,the initial oxidative value of iron and purging air were investigated in detail by means of scanning electron microscope（SEM）,UV-vis spectra and total organic carbon（TOC）analysis.The kinetic study indicates that the adsorption of X3Bon activated carbon fiber accords with the Langmuir adsorption model,and the X3Bdegradation via electro-Fenton reaction follows the pseudo-first-order kinetics.The control experiments suggest that purging air obviously enhance the X3Bdegradation and mineralization rate,in which the oxidative state of iron ion has no significant effect.Experimental results demonstrate that X3Bcan be effectively mineralized,achieving 75.9% mineralization rate and the total apparent current efficiency was 57.2%in 210min. 充氧电极 电-Fenton反应 染料污染物 矿化 oxygen diffusion electrode electro-Fenton reaction dye pollutants mineralization 10.14188/j.1671-8836.2010.05.007 O614.3 国家自然科学基金（20807057）;湖北省自然科学基金资助项目（2008CDB374） 2010-05-01 2021-04-01 5 56