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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 22, 2001
Accepted September 8, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Extraction of Strontium Ion from Sea Water by Contained Liquid Membrane Permeator

Suk-Ki Jeong Chang-Sik Ju^†

Department of Chemical Engineering, Pukyong National University, Busan 608-739, Korea

csju@pknu.ac.kr

Korean Journal of Chemical Engineering, January 2002, 19(1), 93-98(6), 10.1007/BF02706880

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Abstract

To develop a liquid membrane permeator that extracts strontium ion from sea water effectively and continuously, we investigated the extraction of strontium ion from artificial and natural sea water in a contained liquid membrane permeator. The permeator consists of a liquid membrane and two cells for aqueous solutions. The liquid membrane containing D2EHPA(di-2-ethylhexyl-phosphoric acid) and DCH18C6(dicyclohexano-18-crown-6) is trapped_x000D_ between two hydrophobic microporous polyethylene films and separates sea water and the 0.2M H2SO4 aqueous stripping solution. The effects of various operating parameters on the extraction of strontium ion were experimentally examined. The extractant of DCH18C6 - D2EHPA mixture in kerosene had a synergistic effect on the extraction of strontium ion. The permeator extracted strontium ion from sea water effectively and continuously with long membrane lifetime.

Keywords

Contained Liquid Membrane Strontium Ion Sea Water

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