ABSTRACT
Due to the various important applications of subcritical water as a solvent, it is an interesting topic in recent researches. Obtaining knowledge of solubility in subcritical water and the effects of important parameters in this field are very important. In this chapter, the solubility measurement of organic compounds in subcritical water and the use of solubility data in modeling are reviewed. Also, some thermodynamic models for predicting the solubility of organic compounds in subcritical water, such as empirical and semi-empirical models, regular solution theory (RST), dielectric constant model, cubic-plus association (CPA) equation of state and universal functional activity coefficient(UNIFAC) based models are described. Knowledge of phase equilibrium, mass transfer rate and solubility data are important for designing extraction processes and equipment.
