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KMID : 1024520000090060517
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Journal of the Environmental Sciences
2000 Volume.9 No. 6 p.517 ~ p.522
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Separation of Sr[2+] Ion from Seawater by Liquid Membrane Permeator with Two Micro-Porous Films
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Ju Chang-Sik
Lee Hwae-Gyon
Jeong Kap-Seop
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Abstract
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Separation of strontium ion from synthetic seawater in the contained liquid membrane permeator with two micro-porous films was performed. The permeator consisted of a liquid membrane and two cells for aqueous solutions. The liquid membrane consisted of and DCH18C6 (dicyclohexano-18-crown-6),diluted to 30 vol% with kerosine and was trapped between two micro-porous hydrophilic films. This liquid membrane separated two aqueous solutions, one of which was synthetic seawater and the other of which was the stripping solutions consisting of 1mol/L solution. The effects of various operating parameters on the extraction rate and equilibrium extraction ratio of strontium ion from synthetic seawater were experimentally examined. The addition of DCH18C6 to the solution caused synergy effect on the extraction of strontium ion. The permeator extracted strontium ion from synthetic seawater effectively with high membrane life time
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KEYWORD
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liquid membrane permeator, strontium Ion, seawater, micro-porous film
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