Thermodynamic modelling of scale (Calcite, Barite, Anhydrite and Gypsum) deposition from brine

To identify the best activity coefficient model among e-NRTL, e-UNIQUAC and Pitzer approaches, activity coefficients of the above said chemicals have been calculated at different thermodynamic conditions with respect to the available data collected from the literature and the results have been compared to the experimental data. It is shown that the most precise model is Pitzer's one and the second accurate model is e-UNIQUAC.