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• 环境科学 • 上一篇    下一篇

模拟太阳光条件下草酸钠Fenton试剂降解苯酚

康春莉, 冯淑霞, 郭\ 平, 郭\ 晶, 张立辉   

  1. 吉林大学 环境与资源学院, 长春 130012
  • 收稿日期:2005-09-15 修回日期:1900-01-01 出版日期:2006-07-26 发布日期:2006-07-26
  • 通讯作者: 康春莉

Degradation of Phenol by Sodium OxalateFenton Reagent under Simulated Sunlight

KANG Chunli, FENG Shuxia, GUO Ping, GUO Jing, ZHANG Lihui   

  1. College of Environment and Resources, Jilin University, Changchun 130012, China
  • Received:2005-09-15 Revised:1900-01-01 Online:2006-07-26 Published:2006-07-26
  • Contact: KANG Chunli

摘要: 采用氙灯模拟自然条件下的太阳光, 研究了苯酚在草酸钠Fenton反应体系作用下 的降解规律. 对光源、 H2O2、C2O2-4、Fe2+的初始浓度以及pH 值对苯酚的去除率的影响进行了探讨. 结果表明, C2O2-4能有效强化Fenton试剂对苯酚的作用, 在初始pH值为4、 过氧化氢浓度为0.735 1 mmol/L、 草酸钠浓度为0.074 63 mmol/L、 亚铁离子浓度为0.053 6 mmol/L时, 溶液中0.595 2 mmol/L苯酚在90 min的降解率可达76.5%, 其降解过程符合一级动力学方程. GCMS分析表明, 苯酚降解的中间产物主要为苯醌和有机酸.

关键词: 苯酚, 光降解, Fenton试剂

Abstract: Degradation of phenol irradiated with a xenon lamp was studied in the presence of sodium oxalateFenton reagent. Effects of light, the initial concentrations of H2O2、C2O2-4、Fe2+ and pH value on the reactions were investigated. The result shows that C2O2-4 can effectively intensify the effect of the Fenton reagent, and under the following conditions, that is, pH=4.0, c(H2O2)=0.735 1 mmol/L, c(Na2C2O4)=0.074 63 mmol/L, c(Fe2+)=0.053 6 mmol/L, the degradation rate of phenol with a mass concent ration of 0.595 2 mmol/L was 76.5% under simulated sunlight irradiation for 90 min and the degradation course obeyed the  one order kinetic equation.The main intermediates were also identified by GCMS,and they were organic acid and benzoquinone.

Key words: phenols, photodegradation, Fenton reagent

中图分类号: 

  • X132