Liquid membrane coated ion-exchange column solids

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867209

Barkey, Dale P ^[1]

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1. Berkeley, CA

This invention relates to a method for improving the performance of liquid embrane 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 selected 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.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4886598
• OSTI ID: 867209
• Country of Publication: United States
• Language: English

Related Subjects

liquid
membrane
coated
ion-exchange
column
solids
relates
method
improving
performance
embrane
separations
coating
solid
resin
beads
fixed
bed
fabricated
swelled
water
material
forms
film
constitute
fluid
treated
contains
desired
trapped
particle
passed
carrier
molecule
contained
selected
complex
transporting
separating
solution
fed
continuously
breakthrough
occurs
time
recovered
regenerated
resin beads
membrane coated
exchange column
change material
exchange resin
liquid membrane
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
/210/502/