Use of liquid membrane systems for selective ion transfer

Details Use of liquid membrane systems for selective ion transfer Use of liquid membrane systems for selective ion transfer

B - Operations, Transporting

01

D

23/363

B01D 15/04 (2006.01) B01D 61/40 (2006.01)

Patent

CA 1077241

ABSTRACT OF THE DISCLOSURE In a liquid membrane process for removing ions from solution which comprises contacting a solution containing a first ion with an emulsion, said emulsion comprising an external phase which is immiscible with said solution and contains a complexing agent, said complexing agent being capable of forming a first complex with said first ion, which is soluble in said external phase, and an internal phase, the improvement which comprises providing a second ion, in the internal phase, of the emulsion, said second ion being capable of converting said first complex to a second complex by replacing said first ion in said first complex, said second complex being also soluble in said external phase, whereby the first ion diffuses from said solution into said internal phase, and said second ion diffuses from said internal phase into said solution.

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