Cited by 80CO2 Sequestration and Geologic InteractionsCarbon Dioxide Capture TechnologiesCarbon dioxide utilization in catalysis

Reaction mechanism for the aqueous-phase mineral carbonation of heat-activated serpentine at low temperatures and pressures in flue gas conditions

Pasquier, Louis-César, Mercier, Guy, Blais, Jean-François, Cecchi, Emmanuelle, Kentish, Sandra·2014·Environmental Science & Technology

Abstract

Mineral carbonation is known as one of the safest ways to sequester CO2. Nevertheless, the slow kinetics and low carbonation rates constitute a major barrier for any possible industrial application. To date, no studies have focused on reacting serpentinite with a relatively low partial pressure of CO2 (pCO2) close to flue gas conditions. In this work, finely ground and heat-treated serpentinite [Mg3Si2O5(OH)4] extracted from mining residues was reacted with a 18.2 vol % CO2 gas stream at moderate global pressures to investigate the effect on CO2 solubility and Mg leaching. Serpentinite dissolution rates were also measured to define the rate-limiting step. Successive batches of gas were contacted with the same serpentinite to identify surface-limiting factors using scanning electron microscopy (SEM) analysis. Investigation of the serpentinite carbonation reaction mechanisms under conditions close to a direct flue gas treatment showed that increased dissolution rates could be achieved relative to prior work, with an average Mg dissolution rate of 3.55 × 10(-11) mol cm(-2) s(-1). This study provides another perspective of the feasibility of applying a mineral carbonation process to reduce industrial greenhouse gas (GHG) emissions from large emission sources.

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Crossref · 10.1021/es405449v

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  • The ultramafic rock-hosted ore deposits favored for integrated mineral carbonation technologies include chrysotile, nickel, chromium, diamond, and platinum group element mines.

    “The ultramafic rock-hosted ore deposits that are favored for integrated mineral carbonation technologies include chrysotile [63], nickel [64-66], chromium [67,68], diamond [69] and platinum group element (PGE) mines [70,71].”
  • The most common methods for mine waste pre-treatment are thermal activation using calcination, microwave heating, steam mediation, and chemical activation using organic or inorganic acids.

    “The most common methods for mine waste pre-treatment are thermal activation using calcination [67], microwave heating [11], steam mediation [110], and chemical activation using organic or inorganic acids [11].”

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Authors
Pasquier, L.-C., Mercier, G., Blais, J.-F., Cecchi, E., & Kentish, S.
Affiliations
  • Institut National de la Recherche Scientifique (CA)
  • The University of Melbourne (AU)
Corresponding author
Blais, Jean-François
Venue
Environmental Science & Technology
Published
2014-04-08
Volume
48
Issue
9
Pages
5163-5170
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2314316515
Cited by
80
References
48
Citations by year
2026: 3 · 2025: 12 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 5 · 2020: 12 · 2019: 8 · 2018: 7 · 2017: 4 · 2016: 5 · 2015: 2 · 2014: 2
FWCI
3.33
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
  • EspaceINRS (National Institute for Scientific Research (Canada)) (submittedVersion)
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, serpentinite, CO2 sequestration, flue gas, reaction mechanism, CO2 solubility, magnesium leaching, dissolution rate, greenhouse gas emissions reduction, mining waste
MeSH terms
Carbon Dioxide, Cold Temperature, Gases, Hot Temperature, Microscopy, Electron, Scanning, Minerals, Mining, Pressure, Water, Asbestos, Serpentine

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