摘要
以石墨电极作阳极,考察了石墨电极对甲基橙和敌草隆的电化学降解效果。结果表明,酸性和中性条件有利于石墨电极降解有机污染物;当甲基橙和敌草隆的初始浓度分别为50、20mg/L时,在19 mA/cm2的电流密度下电解4 h后,对甲基橙和敌草隆的去除率分别为86.6%和90.7%,对TOC的去除率分别为74.5%和85.5%;电解过程中,石墨电极的极化作用较小,电化学性能稳定。
Taking the graphite electrode as the anode, the electrochemical degradation efficiency of methyl orange and diuron by graphite electrode was investigated. The results show that the acidic and neutral conditions are favorable to the degradation of organic pollutants by the graphite electrode. When the initial concentrations of methyl orange and diuron are 50 mg/L and 20 mg/L respectively, the current density is 19 mA/cm2 , and the electrolysis time is 4 h, the removal rates of methyl orange and diuron are 86.6% and 90.7%, and the removal rates of TOC are 74.5% and 85.5% respectively. During the e- lectrolysis process, the polarization of the graphite electrode is slight, which shows that its electrochemi- cal property is stable.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第21期82-83,86,共3页
China Water & Wastewater
关键词
石墨电极
电化学降解
甲基橙
敌草隆
graphite electrode
electrochemical degradation
methyl orange
diuron
