سال انتشار: ۱۳۸۲

محل انتشار: هشتمین کنگره ملی مهندسی شیمی ایران

تعداد صفحات: ۶

نویسنده(ها):

Mohammad Nader Lotfollahi – Department of Chemical Engineering, Semnan University, Semnan

چکیده:

The activity coefficients of ions in the several ternary systems have been calculated by the UNIQUAC model. Using these values of activity coefficients in the equilibrium equation , the solubilities of solids in the aqueous electrolyte solutions have been calculated. These calculations are performed for Na2SO4-NaCl-H2O, Na2SO4,10H2O -NaCl-H2O, K2SO4-KCl- H2O and K2SO4-Na2SO4-H2O systems. The comparison of the calculated results with the experimental data shows that the UNIQUAC model is able to give a good representation of the solid-liquid phase equilibria in these mineral solutions in the whole temperature range from 273.15 to 373.15K.