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Selective aqueous extraction of organics coupled with trapping by membrane separation

Patent ·
OSTI ID:5421648
; ;

This patent describes improvement in an organic/aqueous extraction process for the extraction of an organic solute from an organic solvent or solvent mixture with an aqueous-based extractant. The improvement comprises continuously recycling the aqueous-based extractant through a membrane separation process that selectively removes the organic solute from the aqueous-based extractant, the membrane separation process being selected from at least one of reverse osmosis, nanofiltration, ultrafiltration, membrane distillation, pervaporation, membrane contactor and supported-liquid membrane.

Assignee:
Bend Research, Inc., Bend, OR (United States)
Patent Number(s):
A; US 5041227
Application Number:
PPN: US 7-595241
OSTI ID:
5421648
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
AQUEOUS SOLUTIONS
DIFFUSION
DISPERSIONS
DISTILLATION
EXTRACTION
FILTRATION
MEMBRANES
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OSMOSIS
SEPARATION PROCESSES
SOLUTES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
ULTRAFILTRATION
USES