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U.S. Department of Energy
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STUDIES OF THE BEHAVIOR OF THE TBP-KEROSENE SOLVENT IN URANIUM REFINING: RECOVERY OF DISCARDED REFINERY SOLVENT

Technical Report ·
OSTI ID:4152671

A series of laboratory tests showed that uranium is retained in the tributyl phosphate-kerosene solvent extraction stream during re-extraction as a result of the formation of non-water-strippable uranium complexes and the decrease of uranium mass transfer rate at the re-extraction stage, The uranium retained by complexing is held by dibuityl phosphate (DBP) and other unknown complexing agents. Continuous solvent treatment, using a 3-step cycle of sodium carbonate-water-nitric acid, removes the DBP and the agents) affecting the decrease of mass transfer rate and slowly reduces the concentration of the unshown uranium-complexing agents. (auth)

Research Organization:
National Lead Co. of Ohio, Cincinnati
NSA Number:
NSA-14-016727
OSTI ID:
4152671
Report Number(s):
NLCO-714
Country of Publication:
United States
Language:
English