化工学报 ›› 2012, Vol. 63 ›› Issue (1): 272-278.DOI: 10.3969/j.issn.0438-1157.2012.01.038

• 能源和环境工程 • 上一篇    下一篇

FeOOH/H2O2体系去除水中对氯硝基苯

朱佳裔,沈吉敏,陈忠林,高国瀛,韩莹   

  1. 哈尔滨工业大学市政环境工程学院城市水资源与水环境国家重点实验室
  • 收稿日期:2011-05-25 修回日期:2011-08-05 出版日期:2012-01-05 发布日期:2012-01-05
  • 通讯作者: 陈忠林

Removal of para-chloronitrobenzene in water by FeOOH/H2O2

ZHU Jiayi,SHEN Jimin,CHEN Zhonglin,GAO Guoying,HAN Ying   

  1. State Key Laboratory of Urban Water Resource and Environment,School of Municipal & Environmental Engineering, Harbin Institute of Technology
  • Received:2011-05-25 Revised:2011-08-05 Online:2012-01-05 Published:2012-01-05

关键词: 羟基氧化铁, 非均相芬顿, 对氯硝基苯, 羟基自由基

Abstract: Synthetic goethite(FeOOH) prepared in laboratory was evaluated for FeOOH/H2O2 catalytic activity removing para-chloronitrobenzene(p-CNB) in water.The pathway of degradation was deduced from the effect of tert-butanol on the catalytic reaction and the performance comparison with some related reactions.Effects of catalyst and oxidant doses,as well as the factors associated with water quality such as initial pH of solution,HCO-3 alkalinity and humic acids,on p-CNB removal in FeOOH/ H2O2 system were also examined.The results show that FeOOH has high catalytic activity on H2O2 decomposition for removing p-CNB in water.Tert-butanol could effectively inhibit the oxidation of p-CNB in FeOOH/H2O2 system,indicating the catalytic oxidation reaction follows a hydroxyl radical pathway.Under the optimal reaction conditions of pH value in the range of 4.0—6.0,dosage of 333 mg·L-1 FeOOH and 6.6 mg·L-1 of H2O2,the removal efficiency of p-CNB is more than 80% after 30 minutes in this experiment.Both bicarbonate and humic acid have inhibitory effect on p-CNB removal,and the higher bicarbonate and humic aid concentration are,the stronger the inhibitory effect is.

Key words: synthetic goethite, heterogeneous Fenton, para-chloronitrobenzene, hydroxyl radical

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