Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1994-06-03
1995-09-19
Dawson, Robert A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210649, 210651, 210490, 21050041, 423249, 423DIG7, B01D 6100
Patent
active
054513227
ABSTRACT:
The present invention is a membrane method and apparatus for separating isotopic water constituents from light water. The method involves providing a supported membrane of an aromatic polyphosphazene and pressurizing the water on one side of the membrane thereby forcing the light water through the supported membrane while isotopic water constituents are retained or vice versa. The apparatus of the present invention includes an aromatic polyphosphazene placed on a porous support and means for pressurizing water through the membrane while certain isotopic water constituents are retained.
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Harry R. Allcock and Sukky Kwon (Department of Chemistry, The Pennsylvania State University); "An Ionically Cross-Linkable Polyphosphazene: Poly[bis(carboxylatophenoxy)phosphazene] and Its Hydrogels and Membranes"; Macromolecules 1989, vol. 22, pp. 75-79.
Duncan James B.
Jensen George A.
Nelson David A.
Battelle (Memorial Institute)
Dawson Robert A.
Fortuna Ana M.
Zimmerman Paul W.
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