膜科学与技术

离子液体－中空纤维包容液膜回收Cs(Ⅰ)研究

作者：陈姆妹²，罗顺忠²，钟文彬²，马宗平²

单位： 1．西南科技大学环境与资源学院，四川绵阳 621010；

关键词：离子液体；中空纤维；封闭液膜；Cs回收率

出版年,卷(期):页码： 2011,31(1):66-71

摘要：

采用疏水性聚丙烯中空纤维作膜器、冠醚DB18C6作萃取剂、离子液体[Bmim][PF6]作稀释剂，构建了新型的离子液体－中空纤维封闭液膜体系，通过正交试验并以直接萃取方法为参照探索其用于回收Cs+的性能。实验结果显示，该液膜体系可以实现从料液回收Cs+，且其中“经管程”操作模式的Cs回收效率优于“经壳程”模式。初步的条件实验显示该膜体系具有可调性，且适用于痕量Cs的分离回收。本实验成果为进一步加密实验条件、优化液膜体系性能奠定了基础，也为发展高效的Cs(Ⅰ) 分离回收方法提供一定参考。

Facilitated transport of Cs(I) from aqueous nitrate feed solutions to a receiver solution through a novel liquid membrane using Ionic liquid [Bmim][PF6] as diluents was investigated. The ionic liquid membrane phase containing DB18C6 as carrier was flowing in hollow fiber module. The recovery efficiency of Cs+ was higher while the ionic liquid membrane phase circulating in the inner side of hollow fiber than circulating in the shell side. The influence of the concentration of Cs+ and H+ in feed, H+ in trip phase and carrier was then analyzed by L9(34) table in order to establish the optimal condition parameter. Primary result concluded that this hollow fiber contained [Bmim][PF6] as membrane phase system was suitable for enriching tracer Cs and can be tuned by transferring parameter value for higher efficiency. This achievement shows a good potential for improving Cs＋ separation processs.

陈姆妹(1983-)，女，福建三明人，硕士研究生，主要从事放射性废物分离方面的工作，

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