ABSTRACT
Activity coefficient models offer an alternative approach to equations of state for the calculation of fugacities in liquid solutions (Prausnitz et al. 1986; Tassios, 1993). These models are also mechanistic and contain adjustable parameters to enhance their correlational ability. The parameters are estimated by matching the thermodynamic model to available equilibrium data. In this chapter, we consider the estimation of parameters in activity coefficient models for electrolyte and non-electrolyte solutions.
