Extraction of substances from aqueous solution

Details Extraction of substances from aqueous solution Extraction of substances from aqueous solution

B - Operations, Transporting

01

D

252/30, 99/80, 2

B01D 11/04 (2006.01) A23F 5/20 (2006.01) A23F 5/22 (2006.01)

Patent

CA 1235109

TITLE Extraction of Substances From Aqueous Solution Abstract of the Disclosure Extraction of dissolved substances from aqueous solution by contacting the solution with a mixture of fluorocarbon solvents comprising normally gaseous monochlorodifluoromethane and normally liquid trichlorotrifluoroethane. Contact is carried out under pressure which maintains the solvent mixture in the liquid state. The aqueous solution and the solvent mixture form two phases upon standing. Separation of the phases and release of pressure on the fluorocarbon solvent liberates the monochloro- difluoromethane from the mixture, and extracted material insoluble in trichlorotrifluoroethane either precipitates or forms a second liquid layer. The insoluble material is then separated from the trichloro- trifluoromethane.

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