Application of GMA Equation of State to Study Thermodynamic Properties of 2-Amino-2-methyl-1-propanol as an Efficient Absorbent for CO2

Alkanolamine solutions such as 2-amino-2-methyl-1-propanol (AMP) are widely used in chemical industries for the removal of acid gases such as CO2 and H2S. In this work, the density of CO2, AMP, water, and AMP solutions using the Goharshadi–Morsali–Abbaspour Equation of State “GMA EoS” in the extended 50-degree range of temperatures (313.06-362.65 K) and pressures (0.5-40 MPa) was calculated. The results showed that the GMA EoS can reproduce the density of these fluids within experimental errors throughout the liquid phase. The minimum and maximum absolute average deviations for the prediction of density for all studied fluids are -0.0082 and 5.2288, respectively. The values of statistical parameters between experimental and calculated thermodynamic properties such as isobaric expansion coefficient, isothermal compressibility, internal pressure, and solubility parameter of AMP show the ability of this equation of state in reproducing these properties.