SOLVENT EXTRACTION RECOVERY AND PURIFICATION OF STRONTIUM-90
A solvent extraction process was developed to produce high-purity Sr/sup 90/ from an irradiated U reprocessing waste solutlon. The extractant is D2EHPA diluted with TBP and Shell Spray Base. The process uses an acetic acid-acetate huffered aqueous phsse which is countercurrently contracted with the D2EHPA organic phase. Calcium and some Ce/sup 144/ extract with the Sr/sup 90/; extraction of other contaminants (Zr/sup 95/, Nb/sup 95/, Ru/sup 106/, and inert lead and iron) is prevented by adding either DTPA or EDTA to the feed solution. Decontamination from Ca and Ce/sup 144/ is provided by back extraction of the Sr/ sup 90/ into an aqueous 1M citric acid solution. The process was used to isolate and purify about one megacurie of Sr/sup 90/ for subsequent use in the fabrication of thermoelectric power generators as part of the Systems for Nuclear Auxiliary Power (SNAP) program. (auth)
- Research Organization:
- General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
- DOE Contract Number:
- AT(45-1)-1350
- NSA Number:
- NSA-17-008241
- OSTI ID:
- 4752532
- Report Number(s):
- HW-SA-2396
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACETATES
AIR
BER
BUILDINGS
CALCIUM
CERIUM 144
CHEMISTRY
CITRIC ACID
COOLANT LOOPS
COOLANTS
COUNTER CURRENT
DECONTAMINATION
EDTA
ENVIRONMENT
FABRICATION
FAILURES
FUELS
GEOLOGY
IMPURITIES
IRON
LEAD
MAINTENANCE
METEOROLOGY
MODERATORS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
NIOBIUM 95
OPERATION
PERSONNEL
PHOSPHORIC ACID
PLANNING
REACTOR CORE
REACTOR SAFETY
REPROCESSING
RESEARCH REACTORS
RUTHENIUM 106
SHUTDOWN
SOLVENT EXTRACTION
STRONTIUM 90
THERMOELECTRIC CELLS
USES
WASTE DISPOSAL
WASTE SOLUTIONS
WATER
ZIRCONIUM 95