Recovery of plutonium and americium from chloride salt wastes by solvent extraction
Plutonium and americium can be recovered from aqueous waste solutions containing a mixture of HCl and chloride salt wastes by the coupling of two solvent extraction systems: tributyl phosphate (TBP) in tetrachloroethylene (TCE) and octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in TCE. In the flowsheet developed, the salt wastes are dissolved in HCl, the Pu(III) is oxidized to the IV state with NaClO/sub 2/ and recovered in the TBP-TCE cycle, and the Am is then removed from the resultant raffinate by the CMPO-TCE cycle. The consequences of the feed solution composition and extraction behavior of these species on the process flowsheet design, the Pu-product purity, and the decontamination of the aqueous raffinate from transuranic elements are discussed. 16 refs., 6 figs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5197071
- Report Number(s):
- CONF-871038-13; CONF-871038-; ON: DE88009947
- Resource Relation:
- Conference: 5. symposium on separation science and technology for energy application, Knoxville, TN, USA, 26 Oct 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AMERICIUM
FLOWSHEETS
SOLVENT EXTRACTION
PLUTONIUM
RADIOACTIVE WASTE PROCESSING
CHLORIDES
CHLORINATED ALIPHATIC HYDROCARBONS
DECONTAMINATION
PHOSPHINE OXIDES
RECOVERY
SALTS
TBP
ACTINIDES
BUTYL PHOSPHATES
CHLORINE COMPOUNDS
CLEANING
DIAGRAMS
ELEMENTS
ESTERS
EXTRACTION
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
MANAGEMENT
METALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHINES
PHOSPHORIC ACID ESTERS
PHOSPHORUS COMPOUNDS
PROCESSING
SEPARATION PROCESSES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
052001* - Nuclear Fuels- Waste Processing