TREATMENT FOR IMPROVING THE OPERATION OF STRONG BASE ANION EXCHANGE RESINS
Patent
·
OSTI ID:4118619
A process is offered for improving quaternary ammonium type strongly basic anion exchange resins so that centain zinc and cadmium residues, which normally stick to and "poison" this type of resin, can be removed by elution. Specifically, the resin as obtained commercially is treated with an aqueous solution of sodium hydroxide of about 1 to 4 M concentration by heating therein and periodically adding small amounts of oxidizing agent selected from hydrogen peroxide, sodium peroxide and hypochlorite. Zinc and cadmium values may then be adsorbed onto the resin from a 0.1 to 3 M HCl and thereafter eluted therefrom with very dilute HCl solutions.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-007271
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 2962351
- OSTI ID:
- 4118619
- Country of Publication:
- United States
- Language:
- English
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