Modeling CO2-water mixture thermodynamics using various equations of state (EoSs) with emphasis on the potential of the SPUNG EoS

The predictability of the single and liquid rich phase densities, two-phase solubilities and dew line is investigated over a wide range of pressures, temperatures and mixture compositions. The results show better density prediction using SPUNG EoS over all the evaluated conditions compared to SRKs with a potential of improvements by changing the reference fluid. However, the CO2 solubility prediction using SPUNG requires the use of other mixing rules that can account for the polar nature of the system.