三维电极法对SDBS的电催化降解(英文)  

Electrochemical Degradation of SDBS Using a Three-dimensional Electrochemical Reactor

作　　者：余婕[1] 乔楠楠[1] 何文妍[1] 王珊珊[1] 王静[1] 黄晓丽[1] 马红竹[1] 

机构地区：[1]陕西师范大学化学化工学院,西安710119

出　　处：《硅酸盐通报》2014年第10期2484-2492,共9页Bulletin of the Chinese Ceramic Society

基　　金：Research Funds for the Central Universities(GK201302013)

摘　　要：采用PVA对高岭土进行改性,制成了一种新型粒子电极-PVA-kaolin,并采用FT-IR、XRD对其进行了表征。实验将其填充在阴阳两极之间,在三维电极体系中对十二烷基苯磺酸钠(SDBS)进行了电催化降解。结果表明:PVA浓度0.1 g/L,PVA-kaolin投加量13 g,pH值为10,SDBS浓度300 mg/L,电流密度100 mA/cm2,Na2SO4投加量为3 g时降解20 min,SDBS去除率可达80.85%。动力学分析表明,相比于SDBS初始浓度,粒子电极投加量对降解效果的影响较大。另外,实验所制备粒子电极具有较好的重复使用性。In this study,a novel particle electrode,PVA modified kaolin（ PVA-kaolin）,was prepared and characterized by Fourier transform infrared spectrometer and X-ray diffractometer. It was applied in degrading sodium dodecyl benzene sulfonate（ SDBS） in a three dimensional electrolysis reactor and showed excellent catalytic activity,when 80. 85% SDBS removal was obtained under optimal operating conditions（ 0. 1 g /L PVA,13 g PVA-kaolin,pH 10,300 mL 300 mg /L SDBS,current density 100 mA / cm2,and 3 g Na2SO4） in 20 min. Furthermore,the effect of concentration of PVA-kaolin and SDBS on reaction kinetics was also studied. The results showed that the dosage of particle electrodes were the dominant factors. Moreover,it exhibited satisfactory cyclic performance.

关 键 词：粒子电极 电催化 PVA 反应动力学 

分 类 号：X703[环境科学与工程—环境工程]