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Title: Liquid membrane coated ion-exchange column solids

Abstract

This invention relates to a method for improving the performance of liquid membrane separations by coating a liquid membrane onto solid ion-exchange resin beads in a fixed bed. Ion-exchange beads fabricated from an ion-exchange resin are swelled with water and are coated with a liquid membrane material that forms a film over the beads. The beads constitute a fixed bed ion-exchange column. Fluid being treated that contains the desired ion to be trapped by the ion-exchange particle is passed through the column. A carrier molecule, contained in the liquid membrane ion-exchange material, is selective for the desired ion in the fluid. The carrier molecule forms a complex with the desired ion, transporting it through the membrane and thus separating it from the other ions. The solution is fed continuously until breakthrough occurs at which time the ion is recovered, and the bed is regenerated.

Inventors:
 [1]
  1. Berkeley, CA
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
866604
Patent Number(s):
4747949
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
liquid; membrane; coated; ion-exchange; column; solids; relates; method; improving; performance; separations; coating; solid; resin; beads; fixed; bed; fabricated; swelled; water; material; forms; film; constitute; fluid; treated; contains; desired; trapped; particle; passed; carrier; molecule; contained; selective; complex; transporting; separating; solution; fed; continuously; breakthrough; occurs; time; recovered; regenerated; resin beads; membrane coated; exchange column; change material; exchange resin; liquid membrane; membrane separation; fixed bed; exchange material; ion-exchange resin; ion-exchange column; ion-exchange material; solid ion-exchange; column solids; coated ion-exchange; membrane material; beads fabricated; ion-exchange beads; /210/

Citation Formats

Barkey, Dale P. Liquid membrane coated ion-exchange column solids. United States: N. p., 1988. Web.
Barkey, Dale P. Liquid membrane coated ion-exchange column solids. United States.
Barkey, Dale P. Fri . "Liquid membrane coated ion-exchange column solids". United States. https://www.osti.gov/servlets/purl/866604.
@article{osti_866604,
title = {Liquid membrane coated ion-exchange column solids},
author = {Barkey, Dale P},
abstractNote = {This invention relates to a method for improving the performance of liquid membrane separations by coating a liquid membrane onto solid ion-exchange resin beads in a fixed bed. Ion-exchange beads fabricated from an ion-exchange resin are swelled with water and are coated with a liquid membrane material that forms a film over the beads. The beads constitute a fixed bed ion-exchange column. Fluid being treated that contains the desired ion to be trapped by the ion-exchange particle is passed through the column. A carrier molecule, contained in the liquid membrane ion-exchange material, is selective for the desired ion in the fluid. The carrier molecule forms a complex with the desired ion, transporting it through the membrane and thus separating it from the other ions. The solution is fed continuously until breakthrough occurs at which time the ion is recovered, and the bed is regenerated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Patent:

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