Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1978-07-25
1980-06-17
Hunt, Brooks H.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 10, 423 18, 423 19, 2523011W, C02B 132
Patent
active
042083770
ABSTRACT:
A process for rendering actinide values recoverable from sodium carbonate scrub waste solutions containing these and other values along with organic compounds resulting from the radiolytic and hydrolytic degradation of neutral organophosphorous extractants such as tri-n butyl phosphate (TBP) and dihexyl-N,N-diethyl carbamylmethylene phosphonate (DHDECAMP) which have been used in the reprocessing of irradiated nuclear reactor fuels. The scrub waste solution is preferably made acidic with mineral acid, to form a feed solution which is then contacted with a water-immiscible, highly polar organic extractant which selectively extracts the degradation products from the feed solution. The feed solution can then be processed to recover the actinides for storage or recycled back into the high-level waste process stream. The extractant is recycled after stripping the degradation products with a neutral sodium carbonate solution.
REFERENCES:
patent: 4162230 (1979-07-01), Horwitz et al.
Horwitz E. Philip
Mason George W.
Hunt Brooks H.
Jackson Frank H.
Lupo R. V.
The United States of America as represented by the United States
Weinberger James W.
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