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Title: Process for recovering chaotropic anions from an aqueous solution also containing other ions

Patent ·
OSTI ID:335436
; ;

A solid/liquid process for the separation and recovery of chaotropic anions from an aqueous solution is disclosed. The solid support comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the chaotropic anions are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved salt (lyotrope). A solid/liquid phase admixture of separation particles containing bound chaotropic anions in such an aqueous solution is also contemplated, as is a chromatography apparatus containing that solid/liquid phase admixture. 19 figs.

Research Organization:
Univ. of Chicago, IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
Assignee:
ARCH Develop. Corp., Chicago, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
Patent Number(s):
US 5,888,397/A/
Application Number:
PAN: 8-478,382
OSTI ID:
335436
Resource Relation:
Other Information: PBD: 30 Mar 1999
Country of Publication:
United States
Language:
English

References (13)

Solid-phase cosolvents. Triphase catalytic hydrolysis of 1-bromoadamantane journal January 1979
Surface affinity chromatographic separation of blood cells journal January 1983
Polystyrene-Immobilized PEG Chains book January 1992
Triphase Catalytic Saponification journal April 1983
Thermodynamics of solvation of ions. Part 5.—Gibbs free energy of hydration at 298.15 K journal January 1991
Non-supported and resin-supported oligo(oxyethylenes) as solid–liquid phase-transfer catalysts. Effect of chain length and head-group journal January 1981
Polyurethane foams as selective sorbents for noble metals journal January 1986
Surface affinity chromatographic separation of blood cells journal January 1980
Polyether-based triphase catalysts. A synthetic comparison journal March 1981
Poly(ethylene glycols) and poly(ethylene glycol)-grafted copolymers are extraordinary catalysts for dehydrohalogenation under two-phase and three-phase conditions journal January 1983
Surface affinity chromatographic separation of blood cells journal January 1984
Technetium Radiopharmaceuticals—Fundamentals, Synthesis, Structure, and Development journal December 1994
Extraction mechanism of monovalent ion-pairs by polyurethane foams journal July 1992

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Related Subjects

40 CHEMISTRY
SEPARATION PROCESSES
ANIONS
AQUEOUS SOLUTIONS
ADSORBENTS
POLYETHYLENE GLYCOLS