Cited by 74CO2 Sequestration and Geologic InteractionsSubcritical and Supercritical Water ProcessesCarbon Dioxide Capture Technologies

Wollastonite Carbonation in Water-Bearing Supercritical CO2: Effects of Particle Size

Open access
Min, Yujia, Li, Qingyun, Voltolini, Marco, Kneafsey, Timothy, Jun, Young-Shin·2017·Environmental Science & Technology

Abstract

The performance of geologic CO 2 sequestration (GCS) can be affected by CO 2 mineralization and changes in the permeability of geologic formations resulting from interactions between water-bearing supercritical CO 2 (scCO 2 ) and silicates in reservoir rocks. However, without an understanding of the size effects, the findings in previous studies using nanometer- or micrometer-size particles cannot be applied to the bulk rock in field sites. In this study, we report the effects of particle sizes on the carbonation of wollastonite (CaSiO 3 ) at 60 °C and 100 bar in water-bearing scCO 2 . After normalization by the surface area, the thickness of the reacted wollastonite layer on the surfaces was independent of particle sizes. After 20 h, the reaction was not controlled by the kinetics of surface reactions but by the diffusion of water-bearing scCO 2 across the product layer on wollastonite surfaces. Among the products of reaction, amorphous silica, rather than calcite, covered the wollastonite surface and acted as a diffusion barrier to water-bearing scCO 2 . The product layer was not highly porous, with a specific surface area 10 times smaller than that of the altered amorphous silica formed at the wollastonite surface in aqueous solution. These findings can help us evaluate the impacts of mineral carbonation in water-bearing scCO 2 .

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Crossref · 10.1021/acs.est.7b04475

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  • Amorphous silica formed during wollastonite carbonation in wet scCO2 is not porous and acts as a diffusion barrier, contributing to unique solute transport properties associated with thin water films.

    “Specifically, amorphous silica formed during wollastonite [CaSiO3] in wet scCO2 is not porous and was implicated as a diffusion barrier, contributing to fundamentally unique solute transport properties associated with thin water films.202”

    From Molecular-scale mechanisms of CO2 mineralization in nanoscale interfacial water films (2022) · cites this paper as [202]

    The section “Amorphous silica acts as a diffusion barrier for water-bearing scCO2” (page unavailable) describes the silica layer as low-porosity and says it can act as a diffusion barrier; it links the porosity difference to chemistry in thin water films. It does not say the layer is nonporous or establish fundamentally unique solute-transport properties. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Interfacial silica-rich layers that form during dissolution in interfacial water films are different from those that repolymerize in a bulk aqueous environment.

    “A salient investigation by Min et al. 202 revealed that interfacial silica-rich layers that form during dissolution in interfacial water films are different from those that repolymerize in a bulk aqueous environment.”

    From Molecular-scale mechanisms of CO2 mineralization in nanoscale interfacial water films (2022) · cites this paper as [202]

    The Environmental Implications section reports that silica layers formed in water-bearing supercritical CO₂ and aqueous solutions have different morphologies; the diffusion-barrier section also finds different porosities. The copy does not establish that the layers formed in bulk aqueous solution do so by repolymerization. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 5

  1. [1]1. IPCC. Special Report on Carbon Dioxide Capture and Storage; Cambridge, 2005.
  2. [19]19. Loring, J. S.; Thompson, C. J.; Wang, Z.; Joly, A. G.; Sklarew, D. S.; Schaef, H. T.; Ilton, E. S.; Rosso, K. M.; Felmy, A. R. In Situ Infrared Spectroscopic Study of Forsterite Carbonation in Wet Supercritical CO2. Environ. Sci. Technol. 2011, 45 (14), 6204-6210.
  3. [21]21. Todd Schaef, H.; McGrail, B. P.; Loring, J. L.; Bowden, M. E.; Arey, B. W.; Rosso, K. M. Forsterite [Mg2SiO4)] Carbonation in Wet Supercritical CO2: An in Situ High-Pressure X- ray Diffraction Study. Environ. Sci. Technol. 2012, 47 (1), 174-181.
  4. [22]22. Miller, Q. R. S.; Kaszuba, J. P.; Schaef, H. T.; Bowden, M. E.; McGrail, B. P. Impacts of Organic Ligands on Forsterite Reactivity in Supercritical CO2 Fluids. Environ. Sci. Technol. 2015, 49 (7), 4724-4734.
  5. [37]37. D. White, G. B., T. Davis, Z. Hajnal, K. Hirsche, I. Hutcheon, E. Majer, B. Rostron, S. Whittaker. Greenhouse gas sequestration in abandoned oil reservoirs: the international energy agency weyburn pilot project. GSA today. 2003, 14 (7), 40.

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Authors
Min, Y., Li, Q., Voltolini, M., Kneafsey, T., & Jun, Y.-S.
Affiliations
  • Washington University in St. Louis (US)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Jun, Young-Shin
Venue
Environmental Science & Technology
Published
2017-10-18
Volume
51
Issue
21
Pages
13044-13053
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2763929415
Cited by
74
References
44
Citations by year
2026: 11 · 2025: 19 · 2024: 9 · 2023: 7 · 2022: 7 · 2021: 6 · 2020: 5 · 2019: 4 · 2018: 6
FWCI
2.30
Type
journal article
Language
en
Open access
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
Division of Earth Sciences (EAR-1057117)
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
  • Physical Sciences › Engineering › Biomedical Engineering › Subcritical and Supercritical Water Processes
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
Keywords
wollastonite, CO2 mineralization, supercritical carbon dioxide, particle size effects, CO2 sequestration, amorphous silica, diffusion barrier, reaction kinetics, product layer
MeSH terms
Animals, Carbon Dioxide, Carbonates, Particle Size, Calcium Compounds, Silicates

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