Formation of a third phase in the simultaneous extraction of actinide(IV) and uranyl nitrates by tributyl phosphate in dodecane
The loading of a 30 vol.% solution of tributyl phosphate in dodecane with large amounts of thorium(IV), uranium(IV) or plutonium(IV) nitrate in the presence of uranyl nitrate causes the formation of a second organic phase, which contains both the actinide(IV) and uranium(VI). The presence of uranium(VI) in the third phase is due to physical distribution of uranyl nitrate, solvated by tributyl phosphate, between the two organic phases. Equations are suggested which describe the distribution of some components between the organic phases, and the actinide(IV) to uranium(VI) ratio in the second organic phase. The maximum attainable concentration of actinides(IV) in the organic phase of a two-liquid-phase system, at which a third phase is not yet formed, was measured and described by an empirical equation as a function of the concentration of uranium(VI) in the organic phase and of ntiric acid in the aqueous phase. 4 figures, 3 tables.
- Research Organization:
- Nuclear Research Centre, Karlaruhe, Germany
- OSTI ID:
- 5597077
- Journal Information:
- Solvent Extr. Ion Exch.; (United States), Journal Name: Solvent Extr. Ion Exch.; (United States) Vol. 1:3; ISSN SEIED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ABSORPTION SPECTRA
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
ALKANES
AMINO ACIDS
AQUEOUS SOLUTIONS
AZINES
BUTYL PHOSPHATES
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMICAL ANALYSIS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMPLEXES
DATA
DATA ANALYSIS
DISPERSIONS
DODECANE
DRUGS
DTPA
ELEMENTS
EQUILIBRIUM
ESTERS
EXPERIMENTAL DATA
EXTRACTION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
INORGANIC ACIDS
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
METALS
MIXTURES
NITRATES
NITRIC ACID
NITROGEN COMPOUNDS
NUMERICAL DATA
NUMERICAL SOLUTION
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PHOSPHORIC ACID ESTERS
PICOLINES
PICOLINIC ACID
PLUTONIUM
PLUTONIUM COMPLEXES
PLUTONIUM COMPOUNDS
PLUTONIUM NITRATES
PYRIDINES
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
RADIOPROTECTIVE SUBSTANCES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLUTIONS
SOLVATION
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TBP
THORIUM
THORIUM COMPLEXES
THORIUM COMPOUNDS
THORIUM NITRATES
TITRATION
TRANSURANIUM COMPLEXES
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS
URANIUM
URANIUM COMPLEXES
URANIUM COMPOUNDS
URANYL COMPOUNDS
URANYL NITRATES
YIELDS