电解制备高铁酸盐中负脉冲作用和高铁酸盐对十二烷基苯磺酸钠的降解  

Effect of Negative Pulse on Electrogenerated FeO_4^(2+) and Degradation of Sodium Dodecylbenzene sulfonate by FeO_4^(2+)

作　　者：夏庆余[1] 陈日耀[1] 郑曦[1] 方熠[1] 陈震[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《应用化学》2005年第1期35-39,共5页Chinese Journal of Applied Chemistry

基　　金：福建省教育厅项目(JA0192;JA0177;JA0189);福建省科技厅重点项目(02H034)

摘　　要：以低碳钢、高碳钢和灰铸铁为阳极,电解生成高铁酸盐的研究表明,阳极材料含碳量的不同,电流效率有显著的差异,即灰铸铁>高碳钢>低碳钢。实验结果表明,对阳极加间歇式脉冲方波,可有效地去除阳极上的氧化膜,电流效率明显提高。用电解新制的高铁酸盐降解十二烷基苯磺酸钠模拟废水的实验结果表明,COD的去除率可达85%以上。Three iron materials, low carbon steel, high carbon steel and gray cast iron were used respectively as the anode in the electrolysis production of ferrate(Ⅵ). The results show that their current efficiencies were remarkably different with the carbon content, the gray cast iron showed the highest FeO 2- 4 current efficiency . An intermittent negative square wave pulsed on the anode was capable of effectively improving the oxide film elimination on the anode surface, with distinct increase of current efficiency. The removal rate of COD Cr was more than 85% when the freshly produced ferrate(Ⅵ) via electrolysis was used to degrade sodium dodecyl benzene sulfonate (SDBS) which was in a synthetic waste water sample.

关 键 词：高铁酸盐 电解 脉冲方波 十二烷基苯磺酸钠 

分 类 号：O614.8[理学—无机化学]