Chemically based model to predict distribution coefficients in the Cu--LIX 65N and Cu-KELEX 100 systems

Journal Article · Wed Mar 01 00:00:00 EST 1978 · Metall. Trans., B; (United States)

DOI:https://doi.org/10.1007/BF02822673· OSTI ID:6822882

Hoh, Y C; Bautista, R G

A chemically based thermodynamic model to predict the distribution coefficients have been developed for the Cu-LIX 65N and Cu-KELEX 100 systems. The predictive model makes use of the aqueous phase cupric sulfate complex stoichiometric stability constant expressed as its degree of formation, their extraction mechnism, and the equilibrium constant for the extraction reaction. The distribution coefficient of copper can be predicted by the equation K/sub d/ = k/sub 1/..cap alpha../sub o/phi/sup 2/, where phi is the ratio of the equilibrated organic concentration to the equilibrated hydrogen ion concentration in the aqueous phase, k/sub 1/ is the effective equilibrium constant containing the quotient of the activity coefficients of the reacting species and ..cap alpha../sub 0/ is the degree of formation of the free cupric ion in the equilibrated aqueous phase. Excellent agreement between the experimental data and the predicted values was obtained. 6 figures, 4 tables.

• Research Organization: Iowa State Univ., Ames
• OSTI ID: 6822882
• Journal Information: Metall. Trans., B; (United States), Vol. 9
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPPER
SOLVENT EXTRACTION
CHELATING AGENTS
COPPER SULFATES
STABILITY
THERMODYNAMICS
COPPER COMPOUNDS
ELEMENTS
EXTRACTION
METALS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400105* - Separation Procedures