聚丙烯中空纤维膜萃取水溶液中铜离子的研究

左丹英; 朱宝库; 王绍洪; 徐又一

环境化学

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左丹英, 朱宝库, 王绍洪, 徐又一. 聚丙烯中空纤维膜萃取水溶液中铜离子的研究[J]. 环境化学, 2006, 25(1): 50-54.

引用本文:

左丹英, 朱宝库, 王绍洪, 徐又一. 聚丙烯中空纤维膜萃取水溶液中铜离子的研究[J]. 环境化学, 2006, 25(1): 50-54.

ZUO Dan-ying, ZHU Bao-ku, WANG Shao-hong, XU You-yi. A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER[J]. Environmental Chemistry, 2006, 25(1): 50-54.

Citation:

ZUO Dan-ying, ZHU Bao-ku, WANG Shao-hong, XU You-yi. A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER[J]. Environmental Chemistry, 2006, 25(1): 50-54.

聚丙烯中空纤维膜萃取水溶液中铜离子的研究

1.
浙江大学高分子科学研究所, 杭州, 310027
基金项目:
国家"973"计划资助项目(2003CB615705)及"863"计划资助项目(2002AA061203).

A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER

1.
Institute of Polymer Science, Zhejiang University, Hangzhou, 310027, China
Fund Project:

摘要: 研究了聚丙烯中空纤维膜萃取二(2-乙基己基)膦酸(D2EHPA)水溶液中铜离子的工艺条件.结果表明,两相流速、膜面积对萃取率基本无影响;而水溶液的pH值和有机相初始铜离子浓度的改变使萃取率在40%-99%之间变化.整个萃取过程的传质阻力主要来源于D2EHPA和 Cu2+的界面配位络合反应阻力,铜浓度比较高时,传质阻力与铜浓度无关;而当铜浓度降低时,传质阻力随着铜浓度的降低而增大.
- 聚丙烯中空纤维膜 /
- 萃取 /
- 铜离子 /
- 二(2-乙基己基)膦酸
Abstract: Processing conditions and mass transfer performance were studied for the system of Cu2+/ D2EHPA kerosene using hydrophobic polypropylene hollow fiber membrane modules.Experiment results showed that the extraction efficiency were independent of flow rates of two phases and the areas of membrane extraction.However, pH of aqueous phase and the initial concentration of copper ions in organic phase have direct relation with extraction efficiency. The total mass transfer resistance was controlled by interfacial complexation reaction. The mass transfer resistance was independent of Cu2+ at high copper ions concentration; but at low copper ions concentration, the mass transfer resistance increased as Cu2+ concentration reduced.
- polypropylene hollow fiber membrane /
- membrane extraction /
- copper ions /
- di-(2-ethylxyl-phosphoric acid

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聚丙烯中空纤维膜萃取水溶液中铜离子的研究

1. 浙江大学高分子科学研究所, 杭州, 310027

收稿日期: 2005-01-07

基金项目:

国家"973"计划资助项目(2003CB615705)及"863"计划资助项目(2002AA061203).

关键词:

摘要: 研究了聚丙烯中空纤维膜萃取二(2-乙基己基)膦酸(D2EHPA)水溶液中铜离子的工艺条件.结果表明,两相流速、膜面积对萃取率基本无影响;而水溶液的pH值和有机相初始铜离子浓度的改变使萃取率在40%-99%之间变化.整个萃取过程的传质阻力主要来源于D2EHPA和 Cu2+的界面配位络合反应阻力,铜浓度比较高时,传质阻力与铜浓度无关;而当铜浓度降低时,传质阻力随着铜浓度的降低而增大.

English Abstract

A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER

1. Institute of Polymer Science, Zhejiang University, Hangzhou, 310027, China

Received Date: 2005-01-07

Fund Project:

Keywords:

Abstract: Processing conditions and mass transfer performance were studied for the system of Cu2+/ D2EHPA kerosene using hydrophobic polypropylene hollow fiber membrane modules.Experiment results showed that the extraction efficiency were independent of flow rates of two phases and the areas of membrane extraction.However, pH of aqueous phase and the initial concentration of copper ions in organic phase have direct relation with extraction efficiency. The total mass transfer resistance was controlled by interfacial complexation reaction. The mass transfer resistance was independent of Cu2+ at high copper ions concentration; but at low copper ions concentration, the mass transfer resistance increased as Cu2+ concentration reduced.

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聚丙烯中空纤维膜萃取水溶液中铜离子的研究

A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER

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聚丙烯中空纤维膜萃取水溶液中铜离子的研究

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A STUDY ON MEMBRANE EXTRACTION OF Cu2+ FROM AQUEOUS SOLUTION USING POLYPROPYLENE HOLLOW FIBER

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