Ti/RuO_2-Pt电极电化学降解苯酚废水研究  

Electrochemical Degradation of Phenol with Ti/RuO_2-Pt Anode

作　　者：李淼[1] 冯传平[1] 胡伟武[1] 张振亚[2] 杉浦则夫[2] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]筑波大学生命与环境科学院,日本筑波058572

出　　处：《环境科学与技术》2008年第8期84-86,89,共4页Environmental Science & Technology

基　　金："十一五"国家科技支撑计划(2006BAJ08B04)

摘　　要：研究以典型的难降解有机污染物苯酚为对象,用Ti/RuO2-Pt阳极进行电催化氧化降解研究,讨论了电解质、苯酚初始浓度、电流密度以及氨氮对苯酚降解效果的影响。研究结果表明:以NaCl为电解质比Na2SO4为电解质时处理苯酚的效果明显,而且电流密度越大、NaCl的添加量越多,苯酚全部降解所需的时间越短;在10mA/cm2的电流密度,0.3g/L氯化钠的添加量下,将苯酚从8mg/L降解为0需要30min。在电流浓度10mA/cm2,氯化钠添加量1.0g/L下,苯酚由20、40、80mg/L降解为0分别需要30、60、130min,降解时间随着浓度的增加呈接近正比增加;氨氮的存在不影响苯酚的电化学降解,而且苯酚优先降解,然后氨氮降解。Electrochemical degradation of phenol was evaluated using Ti/RuO2-Pt anode to treat toxic aromatic compounds. It was found that at current density of 10mA/cm2, phenol was degraded completely from 8 mg/L in 30 minutes with 0.3 g/L NaCl as supporting electrolyte. At current density of 10 mA/cm2 with 1.0g/L NaCl as supporting electrolyte, phenol was degraded completely from 20, 40, 80mg/L in 30, 60, 130 minutes. The efficiency of phenol degradation with NaCl was higher than that with Na2SO4 as supporting electrolyte. Moreover, the degradation of phenol was not affected by the existence of ammonia, and ammonia can be removed after all the phenol was degraded.

关 键 词：电化学 苯酚 氯化钠 

分 类 号：X703[环境科学与工程—环境工程]