Measurements and modelling of FeCO3 solubility in water relevant to corrosion and CO2 mineralization

FeCO3 is present as a CO2 corrosion product in many industrial processes and takes part the natural mineralization process. This work presents solid–liquid equilibrium of system FeCO3-H2O at 5–120 °C. The solubility showed little temperature dependence. However, affected kinetics rate constants for dissolution increased with temperature. activation energy water was determined to 1.55 kJ mol−1. Gibbs formation found be −653.27 mol−1, enthalpy −710.01 mol−1 using Extended UNIQUAC model. could predict experimental data within an average absolute relative deviation 0.08. obtained this study creates basis reducing consequences increasing knowledge