Abstract
FeCO3 solubility plays a crucial role in the rate of carbon
sequestration and corrosion processes. We present an extensive dataset
on precipitation of the solid–liquid equilibria in FeCO3-NaCl-H2O, and FeCO3-HCl-H2O studied at 25–80 °C. 136 new data points on FeCO3
solubility in aqueous NaCl solutions, and 63 data points on the
solubility in aqueous HCl solutions are presented. The temperature has a
minor impact on the FeCO3 solubility in solutions with NaCl and HCl. FeCO3 is ten times more soluble in HCl than in NaCl solutions. The dissolution rate of FeCO3
in NaCl solutions decreased as a function of salt concentrations and
increased with increased temperature. The dissolution rate of FeCO3 in HCl was much larger compared to dissolution in NaCl solutions. The Extended UNIQUAC model was able to calculate FeCO3 solubility. The new FeCO3 solubility data create the foundation for a better understanding of the consequences of CO2 corrosion.
Original language | English |
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Article number | 119605 |
Journal | Chemical Engineering Science |
Volume | 285 |
Number of pages | 15 |
ISSN | 0009-2509 |
DOIs | |
Publication status | Published - 2024 |
Keywords
- CO2 corrosion
- CO2 mineralization
- FeCO3
- HCl
- NaCl
- Solid-liquid equilibria (SLE)
- Solubility