Bromide separation and concentration using semipermeable membran

Details Bromide separation and concentration using semipermeable membran Bromide separation and concentration using semipermeable membran

1991-09-03

1992-10-27

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210652, 423504, B01D 6100

Patent

active

051586835

ABSTRACT:
Aqueous solutions containing bromide and one or more polyvalent anions are separated by nanofiltration into two streams, a brine enriched in the bromide and a brine enriched in the polyvalent anion. The bromide-enriched brine can be concentrated using reverse osmosis, and the concentrated brine can be used, e.g., as feed to a process for recovering elemental bromine or for the production of metal bromide salt.

REFERENCES:
patent: 3479 (1869-01-01), Stieren
patent: 3505216 (1970-04-01), Kryzer
patent: 4141825 (1979-02-01), Conger
patent: 4725425 (1988-02-01), Lesher et al.
patent: 4806244 (1989-02-01), Guilhem
patent: 4872984 (1989-10-01), Tomaschke
patent: 4944882 (1990-07-01), Ray et al.
patent: 4978518 (1990-12-01), Lesher et al.
patent: 4981594 (1991-01-01), Jones

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