Processing of nuclear waste solutions by membrane separation

Details Processing of nuclear waste solutions by membrane separation Processing of nuclear waste solutions by membrane separation

1995-01-23

1996-05-28

Fortuna, Ana

Liquid purification or separation

Processes

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

210644, 210651, 21032175, 210682, 204267, 204524, 204529, 423DIG14, B01D 1504, B01D 1104

Patent

active

055208134

ABSTRACT:
A process for separating monovalent ions from a sodium-bearing radioactive waste stream which comprises contacting the sodium-bearing radioactive waste stream against at least one ion exchange membrane having permselectivity for monovalent ions wherein the monovalent ions permeate or diffuse across the ion exchange membrane to form a permeate of a monovalent ion-enriched stream and wherein a retentate is formed from the sodium-bearing radioactive waste stream which is substantially depleted of monovalent ions.

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Yukio Mizutani, Ion Exchange Membranes with Preferential Permselectivity for monovalent Ions, Journal of Membrane Science, vol. 54, (1990), pp. 233-257.
Ogumi et al., Modification of Ion-Exchange Membrane Surface by Plasma Process. Part 2. Journal of Membrane Science, vol. 54, (1990), pp. 163-174.
Killer et al., On the Nitrate and Monovalent Cation Selectivity of Ion Exchange Membranes used in Drinking Water Purification, Journal of Membrane Science, 75 (1992), pp. 265-275.
Ohmura et al., Interaction of Cation-Exchange Membrane with Polycation. II. Poly(N-Alkyl-4-Vinylpyridinium Halides, Journal of Applied Polymer Science, vol. 38, pp. 1025-1036 (1989).
Sata et al., Modification of The Transport Properties of Ion Exchange Membranes. XII., Journal of Membrane Science, vol. 45 (1989), pp. 209-224.
Yasuda et al., Enhancement of Monovalent Cation Perm-Selectivity of Nafion by Plasma-Induced Surface Modification, Chemistry Letters, The Chemical Society of Japan, pp. 2013-2016, 1992.
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