Solubility enhancement in supercritical solvents

Abstract

The enhancement of solubility of a solid in a supercritical solvent is interpreted with emphasis placed on binary mixtures of the second class. The selection of supercritical solvent ; the choice of temperature and pressure for supercritical fluid extractions; the characteristics of solubility curves between and in the vicinities of the upper critical and the lower critical end points; the effects of density and density-dependent properties; and the addition of an entrainer and its chemical affinity on the solubility enhancement are discussed. The correlations using a cubic equation of state for solid solubilities in a solvent with or without a cosolvent are presented. © 1990 De Gruyter