Cited by 187CO2 Sequestration and Geologic InteractionsCarbon Dioxide Capture TechnologiesCarbon dioxide utilization in catalysis

Kinetics and mechanism of mineral carbonation of olivine for CO2 sequestration

Wang, Fei, Dreisinger, David, Jarvis, Mark, Hitchins, Tony·2019·Minerals Engineering

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Crossref · 10.1016/j.mineng.2018.11.024

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32 of 32 references verified0 citation errors · 0 not checkable

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  • The addition of NaHCO3 and NaCl enhances the reactivity of ultramafic mineral phases by retarding the formation of a Si-rich layer around reacted and non-reacted grains.

    “The addition of NaHCO3 and NaCl enhances the reactivity of ultramafic mineral phases through retarding the formation of Si-rich layer around the reacted and non-reacted grains36.”
  • The reaction comprises three steps: CO2 dissolution generates hydronium ions; hydronium ions attack ultramafic minerals releasing Mg2+ and silicic acid; released Mg2+ reacts with HCO3- and CO3^2- to form nesquehonite.

    “This reaction is comprised of three main steps: (1) CO2 dissolution in water generates hydronium ions72; (2) the hydronium ions attack ultramafic minerals resulting in release of Mg2+ ions and formation of silicic acid (H₄SiO4) which either remains in solution or precipitates as amorphous silica36; (3) the released Mg2+ reacts with HCO₃⁻ and carbonate (CO₃²⁻) to form nesquehonite64.”
  • The pH buffering effect of the NaHCO3-NaCl solution likely promoted faster dissolution of hydrotalcite compared to other silicate minerals.

    “The pH buffering effect of the NaHCO₃–NaCl solution likely promoted faster dissolution of hydrotalcite compared to other silicate minerals36.”
  • Incomplete dissolution of both olivine and chrysotile is likely due to formation of silica-layer passivation slowing further dissolution.

    “Incomplete dissolution of both olivine and chrysotile is likely due to the formation of silica-layer passivation slowing further dissolution36.”

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Authors
Wang, F., Dreisinger, D., Jarvis, M., & Hitchins, T.
Affiliations
University of British Columbia (CA)
Corresponding author
Wang, Fei
Venue
Minerals Engineering
Publisher
Elsevier BV
Published
2019-01
Volume
131
Pages
185-197
ISSN
0892-6875 (ISSN-L)
OpenAlex
W2901068949
Cited by
187
References
32
Citations by year
2026: 32 · 2025: 49 · 2024: 38 · 2023: 17 · 2022: 19 · 2021: 15 · 2020: 10 · 2019: 7
FWCI
4.02
Type
journal article
Language
en
Open access
closed
Locations
Minerals Engineering (publishedVersion)
Funders
  • Killam
  • Natural Sciences and Engineering Research Council of Canada (505580 2016)
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
  • Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
Keywords
CO2 mineralization, olivine, CO2 sequestration, carbonation kinetics, reaction mechanism, sodium salts, partial pressure of CO2, particle size effects, temperature effects, bicarbonate, ionic strength, diffusion-controlled reaction, carbonate layers, silica dissolution, amorphous silica, reaction kinetics control

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