Enrichment of water in components of heavy water

Details Enrichment of water in components of heavy water Enrichment of water in components of heavy water

1990-06-08

1992-01-28

Dawson, Robert A.

Liquid purification or separation

Processes

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

210650, 210651, 210653, 21050027, 55 16, 55 17, 423580, B01D 6100

Patent

active

050841815

ABSTRACT:
A method for the enrichment of the natural water in the components of heavy water such as D.sub.2 O and/or HDO being the source of deuterium. The method utilizes the passing of water through semipermeable hydrophobic membranes on which phase transition occurs. The latter is caused by vacuum or neutral carrier gas on the vapor side of the membrane. Lighter isotopes preferentially pass through the membrane leaving the original water enriched in heavy water components.

REFERENCES:
patent: 3789112 (1974-06-01), Pachaly
patent: 3953568 (1976-04-01), Seko et al.
patent: 4284418 (1981-08-01), Andres
patent: 4285701 (1981-08-01), Schlenker
patent: 4331522 (1982-05-01), Pierini
patent: 4399120 (1983-08-01), Cheung
patent: 4504460 (1985-03-01), Mandrin
patent: 4770785 (1988-09-01), Schaupert
patent: 4818345 (1989-04-01), Jonsson
patent: 4879041 (1989-11-01), Kurokawa et al.
U.S. Application Ser. No. 07/534,960, filed Jun. 8, 1990, entitled "Method of Enrichment of Oxygen-18 in Natural Water".

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