活性炭催化电Fenton法降解甲基橙的研究

Degradation of Methyl Orange by Electro-Fenton Process With Actived Carbon as Catalyst

采用活性炭催化电Fenton技术降解含甲基橙的模拟偶氮染料废水,选用铁板做阴、阳极,活性炭做为催化剂悬浮于两极板之间,考察了甲基橙初始浓度、溶液pH值、活性炭投加量、槽压、电解质浓度等因素对甲基橙脱色率的影响。结果表明,当甲基橙初始浓度为100 mg/L、溶液pH值为3、活性炭投加量为10 g、槽电压为12.5 V、电解质Na2SO4浓度为1.5 g/L时,反应60 min后甲基橙脱色率可达到92%以上,且符合一级反应动力学。

Using activated carbon as catalyst,iron plates as anode and cathode,methyl orange-containing simulated azo dye wastewater was degraded by electro-Fenton process.The influences of methyl orange initial concentration,pH value,activated carbon dosage,electrode potential,Na2SO4 concentration on the decolorization rate of methyl orange were investigated.The results show that when the operating conditions are as follows： methyl orange initial concentration 100 mg/L,pH value 3,activated carbon dosage 10 g,electrode potential 12.5 V,electrolyte Na2SO4 concentration 1.5 g/L,and reaction time 60min,the decolorization rate of methyl orange can reach more than 92%,and the degradation reaction accords with first order kinetic equation.