Thermodynamic modeling of chemical equilibria in metal extraction

Conference · Sat Oct 01 04:00:00 EDT 1988 · Sep. Sci. Technol.; (United States)

OSTI ID:5996020

Chaiko, D J; Fredrickson, D R; Reichley-Yinger, L; Vandergrift, G F

Models of equilibrium extraction data are being developed for use in computer simulations of metal extraction processes. The correlations are based on chemical mass action principles in which the effects of metal complexation and aqueous phase activity coefficients are considered. Activity coefficients in mixed electrolyte solutions at high ionic strengths are calculated using methods available in the literature. This modeling approach is demonstrated for HNO/sub 3/ extraction with both the PUREX and TRUEX solvents and for Am/sup 3 +/ extraction by octylphenyl-N,N-diisobutylcarbamoylmethylphosphine oxide, which is the primary extractant in the TRUEX solvent.

• Research Organization: Argonne National Lab., IL (USA)
• OSTI ID: 5996020
• Report Number(s): CONF-871038-
• Conference Information: Journal Name: Sep. Sci. Technol.; (United States) Journal Volume: 23:12,13
• Country of Publication: United States
• Language: English

Related Subjects

050800 -- Nuclear Fuels-- Spent Fuels Reprocessing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
AMERICIUM
BUTYL PHOSPHATES
CHALCOGENIDES
COMPLEXES
COMPUTERIZED SIMULATION
DATA
DISPERSIONS
ELECTROLYTES
ELEMENTS
EQUILIBRIUM
ESTERS
EXPERIMENTAL DATA
EXTRACTION
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONIC POTENTIAL
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
METALS
MIXTURES
NITRIC ACID
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHOSPHINES
PHOSPHORIC ACID ESTERS
PHOSPHORUS COMPOUNDS
SEPARATION PROCESSES
SIMULATION
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
TBP
THERMODYNAMIC ACTIVITY
THERMODYNAMICS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS