过硫酸盐高级氧化工艺降解硝基苯  

Degradation of Nitrobenzene with Persulfate Advanced Oxidation Process

作　　者：王航[1] 王涵[1] 冯宇[1] 刘宁[1] 郭骞昊 刘娜[1] 高松[1] 

机构地区：[1]吉林大学环境与资源学院地下水资源与环境教育部重点实验室,吉林长春130021

出　　处：《环境科学与技术》2016年第5期75-79,共5页Environmental Science & Technology

基　　金：国家自然科学基金面上项目:硝基苯污染地下水生物修复微生物群落结构及修复效能(41072170)

摘　　要：近来,高级氧化工艺被广泛应用到各种工业废水的处理中,并取得了较好的处理效果。实验以过硫酸钾作为氧化剂,二价铁离子作为催化剂,以石墨板作为电极,在通电的条件下研究该反应对目标污染物硝基苯的降解。并通过改变氧化剂的浓度、电压、pH值、电解质浓度、Fe^(2+)浓度等条件,以提高硝基苯的降解率。实验表明,当控制硝基苯浓度为100 mg/L,过硫酸钾浓度2 mmol/L,电压为5 V,电极间距为4 cm,pH值3.0,Na_2SO_4浓度0.05 mol/L,Fe^(2+)浓度2 mmol/L反应180 min后,硝基苯的降解率可达到80%。Recently, advanced oxidation process have been widely applied to various kinds of industrial wastewater treatment, and achieved ideal effect.The experiment with potassium persulfate as oxidant, the ferrous as catalyst, graphite as electrode, and kept the reaction under the condition of electricity to study the degradation of the nitrobenzene. Reaction condition such as the concentration of the oxidant, voltage, the value of pH, the concentration of electrolyte and Fe^2＋ were changed, to improve the degradation rate of the nitrobenzene. The experiment result show that when the concentration of the nitrobenzene was kept as 100 mg/L, potassium persulfate as 2 mmol/L, voltage as 5 V, electrode gap as 4 cm, the value of pH as 3.0, the concentration of Na_2SO_4 and Fe^2＋respectively as 0.05 mol/L and 2 mmol/L, the degradation rate of nitrobenzene can be reached 80% after 180 min＇s reaction.

关 键 词：高级氧化工艺 过硫酸钾 石墨板 硝基苯降解率 

分 类 号：X703.1[环境科学与工程—环境工程]