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

Randi Neerup; Isaac A. Løge; Georgios M. Kontogeorgis; Kaj Thomsen; Philip L. Fosbøl

doi:10.1016/j.ces.2023.118549

Measurements and modelling of FeCO₃solubility in water relevant to corrosion and CO₂mineralization

Randi Neerup, Isaac A. Løge, Georgios M. Kontogeorgis, Kaj Thomsen, Philip L. Fosbøl^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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

The data obtained in this study creates the basis of reducing the consequences of CO₂ corrosion and increasing knowledge of the CO₂ mineralization process.

Original language	English
Article number	118549
Journal	Chemical Engineering Science
Volume	270
Number of pages	12
ISSN	0009-2509
DOIs	https://doi.org/10.1016/j.ces.2023.118549
Publication status	Published - 2023

Keywords

CO2 corrosion
CO2 storage, Extended UNIQUAC model
FeCO3
Solid-liquid equilibria (SLE)
Solubility

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title = "Measurements and modelling of FeCO3 solubility in water relevant to corrosion and CO2 mineralization",

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

keywords = "CO2 corrosion, CO2 storage, Extended UNIQUAC model, FeCO3, Solid-liquid equilibria (SLE), Solubility",

author = "Randi Neerup and L{\o}ge, {Isaac A.} and Kontogeorgis, {Georgios M.} and Kaj Thomsen and Fosb{\o}l, {Philip L.}",

year = "2023",

doi = "10.1016/j.ces.2023.118549",

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volume = "270",

journal = "Chemical Engineering Science",

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T1 - Measurements and modelling of FeCO3 solubility in water relevant to corrosion and CO2 mineralization

AU - Neerup, Randi

AU - Løge, Isaac A.

AU - Kontogeorgis, Georgios M.

AU - Thomsen, Kaj

AU - Fosbøl, Philip L.

PY - 2023

Y1 - 2023

N2 - FeCO3 is present as a CO2 corrosion product in many industrial processes and takes part in the natural CO2 mineralization process. This work presents the solid-liquid equilibrium of the system FeCO3-H2O at 5-120 °C. The FeCO3 solubility showed little temperature dependence. However, temperature affected kinetics as the rate constants for FeCO3 dissolution increased with temperature. The activation energy of FeCO3 dissolution in water was determined to 1.55 kJ mol-1. Gibbs energy of formation was found to be -653.27 kJ mol-1 and the enthalpy of formation for FeCO3 was -710.01 kJ mol-1 using the Extended UNIQUAC model. Extended UNIQUAC could predict the experimental solubility data of FeCO3 in water within an average absolute relative deviation of 0.08.The data obtained in this study creates the basis of reducing the consequences of CO2 corrosion and increasing knowledge of the CO2 mineralization process.

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

KW - CO2 corrosion

KW - CO2 storage, Extended UNIQUAC model

KW - FeCO3

KW - Solid-liquid equilibria (SLE)

KW - Solubility

U2 - 10.1016/j.ces.2023.118549

DO - 10.1016/j.ces.2023.118549

M3 - Journal article

SN - 0009-2509

VL - 270

JO - Chemical Engineering Science

JF - Chemical Engineering Science

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ER -