The influence of Na2SO4 on the CO2 solubility in water at high pressure

The system CO2-H2O-Na2SO4 was modeled using the Anderko-Pitzer EOS, specially developed for water-salt systems at high temperatures and pressures. Experimental data were used for obtaining parameters in the range of pressure and temperature of the data. In this range they differ with an average deviation of %ΔP = 4.64% in total pressure from the experimental results. However, extrapolated results from the Anderko-Pitzer EOS are poor. In order to extend the region of applicability of the EOS, it will be necessary to adjust the parameters in the appropriate range of temperature and concentration.