Evaluation of extractants and chelating resins in polishing actinide-contaminated waste streams
At the Los Alamos National Laboratory Plutonium Facility, anion exchange is used for recovering plutonium from nitric acid solutions. Although this approach recovers >99%, the trace amounts of plutonium and other actinides remaining in the effluent require additional processing. We are doing research to develop a secondary unit operation that can directly polish the effluent so that actinide levels are reduced to below the maximum allowed for facility discharge. We selected solvent extraction, the only unit operation that can meet the stringent process requirements imposed; several carbonyl and phosphoryl extractants were evaluated and their performance characterized. We also investigated various engineering approaches for solvent extraction; the most promising was a chelating resin loaded with extractant. Our research now focuses on the synthesis of malonamides, and our goal is to bond these extractants to a resin matrix. 7 refs., 12 figs., 1 tab.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5679932
- Report Number(s):
- LA-11978; ON: DE91015354
- Country of Publication:
- United States
- Language:
- English
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Evaluation of extractants and chelating resins in polishing actinide-contaminated waste streams
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
SEPARATION PROCESSES
ION EXCHANGE MATERIALS
PERFORMANCE TESTING
POLYAMIDES
CHEMICAL PREPARATION
AMERICIUM
CHELATING AGENTS
DISTRIBUTION FUNCTIONS
GLOVEBOXES
ION EXCHANGE CHROMATOGRAPHY
LANL
LIQUID WASTES
MATRIX MATERIALS
PLUTONIUM
RADIOACTIVE WASTE PROCESSING
RESINS
SOLVENT EXTRACTION
TRUEX PROCESS
CHROMATOGRAPHY
ELEMENTS
EQUIPMENT
EXTRACTION
FUNCTIONS
LABORATORY EQUIPMENT
MANAGEMENT
MATERIALS
METALS
NATIONAL ORGANIZATIONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
PROCESSING
SYNTHESIS
TESTING
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
US DOE
US ORGANIZATIONS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
400105* - Separation Procedures
050800 - Nuclear Fuels- Spent Fuels Reprocessing