Thermodynamic modeling of chemical equilibria in metal extraction. [TBP, CMPO]

Conference · Wed Dec 31 23:00:00 EST 1986

OSTI ID:7005579

Chaiko, D J; Fredrickson, D R; Reichley-Yinger, L; Vandegrift, 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 PIREX and TRUEX solvents and for Am/sup 3 +/ extraction by octylphenyl-N,N-diisobutylcarbamoylmethylphosphine oxide, which is the primary extractant in the TRUEX solvent. 27 refs., 4 figs., 4 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7005579
• Report Number(s): CONF-871038-12; ON: DE88009948
• Country of Publication: United States
• Language: English

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ACTINIDES
ALKALI METAL COMPOUNDS
AMERICIUM
BUTYL PHOSPHATES
COMPUTERIZED SIMULATION
ELEMENTS
ESTERS
EXTRACTION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATHEMATICAL MODELS
METALS
NITRATES
NITRIC ACID
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PHOSPHORIC ACID ESTERS
PUREX PROCESS
REPROCESSING
SALTING-OUT AGENTS
SEPARATION PROCESSES
SIMULATION
SODIUM COMPOUNDS
SODIUM NITRATES
SOLVENT EXTRACTION
SOLVENTS
TBP
THERMODYNAMIC ACTIVITY
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS