Activity Coefficient Model: Redlich-Kister for Ternary Mixtures

Note 1: Models for ternary systems are based solely on the combined results for the binary sub-systems. Specific formulations are described in the book by Novak, Matous , and Pick, Liquid-liquid equilibria, which is Volume 4 of the series Studies in Modern Thermodynamics published by Elsevier in 1987 (See ref 31).

Note 2: The same model must be used for all binary sub-systems in order to calculate the properties of the ternary.

Note 3: Only vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) are considered in the fitting of model parameters.

where N is the number of terms and Aijk is the binary parameter ak for components i and j.

Note: Switching components i and j changes the signs of the ak parameters with odd k.

Aii = 0.