Title: Prediction of phase equilibria in tributyl phosphate extraction system using the unifac group contribution method
Abstract: Vapour-liquid and vapour-liquid-liquid equilibria of 19 tributyl phosphate-involved systems are experimentally studied. The activity coefficients of aqueous species are calculated using Pitzer's equations. For the organic phase, the UNIFAC method is used for the correlation of the experimental data and the prediction of the equilibrium composition. For extraction systems of HNO3 and UO2(NO3)2, a group assignment is proposed. Parameters needed in the method are derived or determined by data regression. Concentrations predicted by UNIFAC are in good agreement with the experimental results.
Publication Year: 1990
Publication Date: 1990-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 8
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