Extraction of actinide and lanthanide complexonates in potassium carbonate-poly(ethylene glycol)-water two-phase aqueous system
An extraction system based on poly(ethylene glycol) for preconcentrating, isolating and separating actinides, is proposed. The extraction of actinides and lanthanides in a potassium carbonate-poly(ethylene glycol)-water two-phase aqueous system in the presence of various complexones was studied. Trivalent actinides are quantitatively extracted by poly(ethylene glycol) from potassium carbonate solutions in a system with Xylenol Orange and alizarin complexone. Under these conditions, uranium (VI) and plutonium (IV) are extracted inappreciably into a phase enriched with poly(ethylene glycol), so that they can be separated from trivalent actinides with a separation factor of 10/sup 2/-10/sup 3/. To separate actinides and lanthanides, two complexones were introduced into the system, one of which served as an extractant, and the other as a masking reagent. The best results were obtained for a mixture of Xylenol Orange and hydroxyethylidenediphosphonic acid. The separation coefficients of americium and europium are 4.5-5.6.
- OSTI ID:
- 5976684
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Vol. 30:1; Other Information: Translated from Radiokhimiya; 30: No. 1, 60-64(Jan-Feb 1988)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ACTINIDE COMPLEXES
SOLVENT EXTRACTION
ORGANIC SOLVENTS
MATERIALS TESTING
RARE EARTH COMPLEXES
AMERICIUM COMPLEXES
AQUEOUS SOLUTIONS
COMPARATIVE EVALUATIONS
EUROPIUM COMPLEXES
PHASE DIAGRAMS
PHOSPHONIC ACID ESTERS
PLUTONIUM COMPLEXES
POLYETHYLENE GLYCOLS
POTASSIUM CARBONATES
RADIOMETRIC ANALYSIS
SOLVENT PROPERTIES
TERBIUM COMPLEXES
URANIUM COMPLEXES
VALENCE
XYLENOL ORANGE
ALCOHOLS
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMICAL ANALYSIS
COMPLEXES
DIAGRAMS
DISPERSIONS
DYES
ESTERS
EXTRACTION
GLYCOLS
HYDROXY COMPOUNDS
INDICATORS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POTASSIUM COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SOLVENTS
TESTING
TRANSURANIUM COMPLEXES
400105* - Separation Procedures
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials