摘要
以FeOOH作为催化剂,采用超声波与多相类Fenton氧化联用技术降解硝基苯。研究结果表明:在超声波功率为150 W、频率为40 kHz、溶液pH为3、初始硝基苯质量浓度为6.16 mg/L、H2O2加入量为17.01 mg/L、FeOOH加入量为100 mg/L时,反应120 min后硝基苯去除率达88.06%;加入·OH捕获剂叔丁醇后,FeOOH和超声波-FeOOH反应体系的硝基苯去除率均显著下降;随着反应时间的延长,FeOOH和超声波-FeOOH反应体系的铁溶出量均逐渐增大,但在整个反应过程中,总铁和Fe2+质量浓度均很小。
Nitrobenzene was degraded by the combination process of ultrasonic and heterogeneous Fenton- like oxidation using FeOOH as catalyst. The research results show that under the conditions of ultrasonic power 150 W, ultrasonic frequency 40 kHz, solution pH 3, initial nitrobenzene mass concentration 6.16 mg/L, H2O2 dosage 17.01 mg/L, FeOOH dosage 100 mg/L and reaction time 120 min, the nitrobenzene removal rate is 88.06%; With the addition of tert-butyl alcohol（· OH capture agent）, the nitrobenzene removal rates in the FeOOH and ultrasonic-FeOOH systems are both decreased significantly; With the extension of reaction time, the dissolved iron quantities in the FeOOH and ultrasonic-FeOOH systems are both increased gradually, but the mass concentrations of total iron and Fe2＋ are both very small during the whole reaction process.
出处
《化工环保》
CAS
CSCD
北大核心
2013年第5期381-385,共5页
Environmental Protection of Chemical Industry
基金
国家自然科学基金资助项目(50978169)
深圳市科技工贸和信息化委员会资助项目(JC200903180722A)
关键词
超声波
多相类芬顿氧化
硝基苯
铁离子
废水处理
ultrasonic wave
heterogeneous Fenton-like oxidation
nitrobenzene
iron ion
wastewatertreatment
