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超声波和零价铁联用对氯代苯酚脱氯降解作用的研究

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赵保卫, 周怡, 赵艺. 超声波和零价铁联用对氯代苯酚脱氯降解作用的研究[J]. 环境工程学报, 2009, 3(11): 1973-1976.
引用本文: 赵保卫, 周怡, 赵艺. 超声波和零价铁联用对氯代苯酚脱氯降解作用的研究[J]. 环境工程学报, 2009, 3(11): 1973-1976.
shu
Zhao Baowei, Zhou Yi, Zhao Yi. Study on dechlorination of chlorinated phenols by ultrasound and zero valent iron[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1973-1976.
Citation: Zhao Baowei, Zhou Yi, Zhao Yi. Study on dechlorination of chlorinated phenols by ultrasound and zero valent iron[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1973-1976.
shu

超声波和零价铁联用对氯代苯酚脱氯降解作用的研究

  • 1.

    兰州交通大学环境与市政工程学院，兰州 730070

  • 基金项目:

    教育部“春晖”计划项目（Z2005-1-62010）

    甘肃省自然科学基金资助项目（3ZS051-A25-039）

    兰州交通大学“青蓝”人才工程项目

  • 中图分类号: X703.1

Study on dechlorination of chlorinated phenols by ultrasound and zero valent iron

  • 1.

    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

  • Fund Project:

摘要

  • 摘要: 采用超声波和零价铁联用对氯代有机物3氯苯酚(CP)、2,4-二氯苯酚(DCP)和2,4,6-三氯苯酚(TCP)模拟废水进行了脱氯处理研究。以单因素法, 考察了铁粉初始投加量、溶液的初始浓度、超声波功率和溶液的pH值等因素对氯代酚降解的影响，并探讨了降解反应动力学。结果表明，超声波和零价铁联用对氯酚具有显著的降解效果，当水样初始浓度为25 mg/L，溶液pH呈弱酸性，超声波功率为200 W时，氯代酚的脱氯效率达到最大值。降解反应符合准一级反应，CP、DCP和TCP的反应速率常数分别0.0613 h-1、0.374 h-1和0.197 h-1。
    Abstract: In this paper, the dechlorination of 3-chlorophenol (CP), 2, 4-dichlorophenol (DCP) and 2, 4, 6-trichlorophenol (TCP) by ultrasound (US) and zero valent iron (Fe0) was investigated. The influences of iron addition, power of ultrasound, initial concentration of phenols and pH values of solution on dechlorination efficiency were tested and the kinetics of dechlorination was discussed. It was shown that the dechlorination by US/Fe0 was significant in general. When the initial concentration of phenols was 25 mg/L, the pH values of solution was weak acid, and the power of ultrasound was 200 W, the efficiency of dechlorination was up to the biggest value. The dechlorination reaction was a pseudofirst-order reaction and the rate constants were 0.0613 h-1, 0.374 h-11 and 0.197 h-1 for CP, DCP and TCP, respectively.
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出版历程
  • 收稿日期:  2008-12-01
赵保卫, 周怡, 赵艺. 超声波和零价铁联用对氯代苯酚脱氯降解作用的研究[J]. 环境工程学报, 2009, 3(11): 1973-1976.
引用本文: 赵保卫, 周怡, 赵艺. 超声波和零价铁联用对氯代苯酚脱氯降解作用的研究[J]. 环境工程学报, 2009, 3(11): 1973-1976.
shu
Zhao Baowei, Zhou Yi, Zhao Yi. Study on dechlorination of chlorinated phenols by ultrasound and zero valent iron[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1973-1976.
Citation: Zhao Baowei, Zhou Yi, Zhao Yi. Study on dechlorination of chlorinated phenols by ultrasound and zero valent iron[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1973-1976.
shu

超声波和零价铁联用对氯代苯酚脱氯降解作用的研究

  • 1. 兰州交通大学环境与市政工程学院，兰州 730070
  • 收稿日期:  2008-12-01
基金项目:

教育部“春晖”计划项目（Z2005-1-62010）

甘肃省自然科学基金资助项目（3ZS051-A25-039）

兰州交通大学“青蓝”人才工程项目

摘要: 采用超声波和零价铁联用对氯代有机物3氯苯酚(CP)、2,4-二氯苯酚(DCP)和2,4,6-三氯苯酚(TCP)模拟废水进行了脱氯处理研究。以单因素法, 考察了铁粉初始投加量、溶液的初始浓度、超声波功率和溶液的pH值等因素对氯代酚降解的影响，并探讨了降解反应动力学。结果表明，超声波和零价铁联用对氯酚具有显著的降解效果，当水样初始浓度为25 mg/L，溶液pH呈弱酸性，超声波功率为200 W时，氯代酚的脱氯效率达到最大值。降解反应符合准一级反应，CP、DCP和TCP的反应速率常数分别0.0613 h-1、0.374 h-1和0.197 h-1。

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