| PC-88A为载体的大块液膜体系Cu(II)传输动力学 |
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| 引用本文： | 余晓皎,范薇,姚秉华,周孝德,张建丰.PC-88A为载体的大块液膜体系Cu(II)传输动力学[J].过程工程学报,2009,9(4):647-651. |
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| 作者姓名： | 余晓皎 范薇 姚秉华 周孝德 张建丰 |
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| 作者单位： | 西安理工大学应用化学系 开封大学化学工程学院 西安理工大学理学院应用化学系 西安理工大学水利水电学院 西安理工大学水利水电学院 |
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| 摘 要： | 采用以2-乙基己基膦酸-2-乙基己基单酯(PC-88A)为载体、CHCl3为膜溶剂的大块液膜分离体系，研究了搅拌速度、载体浓度、体系温度对铜离子迁移的影响. 获得了不同反应温度下的表观反应速率常数，萃取与反萃取表观反应活化能分别为41.97和8.59 kJ/mol. 铜离子的迁移过程可用2个串联的准一级不可逆过程描述，萃取过程化学反应为控速步骤，反萃取过程扩散为控速步骤.
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| 关 键 词： | 2-乙基己基膦酸-2-乙基己基单酯 铜离子 大块液膜 传输动力学 |
| 收稿时间： | 2009-2-25 |
| 修稿时间： | 2009-5-20 |
Transfer Kinetics of Cu(II) through Bulk Liquid Membrane Using PC-88A as Carrier |
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| YU Xiao-jiao,FAN Wei,YAO Bing-hua,ZHOU Xiao-de,ZHANG Jian-feng.Transfer Kinetics of Cu(II) through Bulk Liquid Membrane Using PC-88A as Carrier[J].Chinese Journal of Process Engineering,2009,9(4):647-651. |
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| Authors: | YU Xiao-jiao FAN Wei YAO Bing-hua ZHOU Xiao-de ZHANG Jian-feng |
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| Affiliation: | Department of Applied Chemistry, Xi'an University of Technology College of Chemical Engineering, Kaifeng University Institute of Water Resources and Hydro-electric Engineering，Xian University of Technology College of Water Resources and Hydraulic Power, Xi'an University of Technology College of Water Resources and Hydraulic Power, Xi'an University of Technology |
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| Abstract: | The effects of stirring speed, carrier concentration and reaction temperature on transport of Cu(II) ion through bulk liquid membrane was studied with chloroform as membrane solvent and 2-ethylhexyl phosphonic acid-mono-2-ethylhexylester (PC-88A) as carrier. The pseudo-first order apparent rate constants of interfacial transport of Cu(II) ions were determined. The apparent activation energy values are 31.65 kJ/mol for extraction and 23.11 kJ/mol for stripping, respectively. The kinetics of Cu(II) transport could be evaluated by two consecutive irreversible pseudo-first order reactions. In this condition the chemical reaction is the controlled step for extraction, and diffusion for stripping. |
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| Keywords: | 2-ethylhexyl phosphonic acid-mono-2-ethylhexylester copper ion bulk liquid membrane transport kinetics |
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