Actinide partitioning and transmutation program. Progress report, July 1--September 30, 1977
- comps.
In Purex process modifications, two cold runs with mixer-settlers were made on the extraction and stripping of ruthenium and zirconium without the presence of uranium. Efforts in actinide recovery from solids were directed toward the determination of dissolution parameters in various reagents for /sup 241/Am and /sup 239/Pu oxide mixtures, /sup 233/U oxide, /sup 237/Np oxide, /sup 244/Cm oxide, /sup 232/Th oxide, and PuO/sub 2/. Studies in americium-curium recovery with OPIX (oxalate precipitation and ion exchange), Talspeak, and cation exchange chromatography focused on the feasibility of forming oxalate precipitates in continuous systems, the effects of zirconium on Talspeak, and methods for removing solvent degradation products of the Talspeak system. In studies of americium-curium recovery using bidentate extractants, additional distribution coefficients for actinides and other key elements between reduced synthetic LWR waste solution and 30 percent dihexyl-N, N-diethyl-carbamylmethylene phosphonate in diisopropylbenzene were measured. Studies in the americium-curium recovery using inorganic ion exchange media to determine the pH dependence of lanthanide ion affinity for niobate, titanate, and zirconate ion exchange materials have been completed. A modified flowsheet for the extraction of uranium, neptunium, plutonium, americium, and curium from high-level liquid waste is presented. Evaluation of methods for measuring actinides from incinerator ash is continuing. A preliminary evaluation of methods for treatment of salt waste and waste waters was completed. In thermal reactor transmutation studies, waste actinides from an LWR lattice containing mixed uranium-plutonium assemblies were recycled in separate target assemblies. (LK)
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5065842
- Report Number(s):
- ORNL/TM-6174
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACTINIDES
SEPARATION PROCESSES
TRANSMUTATION
AMERICIUM
ION EXCHANGE
SOLVENT EXTRACTION
CURIUM
NEPTUNIUM
PLUTONIUM
PUREX PROCESS
MODIFICATIONS
RADIOACTIVE WASTE PROCESSING
RESEARCH PROGRAMS
URANIUM
FLOWSHEETS
HIGH-LEVEL RADIOACTIVE WASTES
PHOSPHORIC ACID ESTERS
RECOVERY
DIAGRAMS
ELEMENTS
ESTERS
EXTRACTION
MANAGEMENT
METALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
REPROCESSING
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing
052002 - Nuclear Fuels- Waste Disposal & Storage