Cited by 103CO2 Sequestration and Geologic InteractionsMicrobial Applications in Construction MaterialsMine drainage and remediation techniques

Microbially mediated mineral carbonation: Roles of phototrophy and heterotrophy

Power, Ian M., Wilson, Sasha, Small, Darcy P., Dipple, Gregory M., Wan, Wankei, Southam, Gordon·2011·Environmental Science & Technology

Abstract

Ultramafic mine tailings from the Diavik Diamond Mine, Canada and the Mount Keith Nickel Mine, Western Australia are valuable feedstocks for sequestering CO₂ via mineral carbonation. In microcosm experiments, tailings were leached using various dilute acids to produce subsaline solutions at circumneutral pH that were inoculated with a phototrophic consortium that is able to induce carbonate precipitation. Geochemical modeling of the experimental solutions indicates that up to 2.5% and 16.7% of the annual emissions for Diavik and Mount Keith mines, respectively, could be sequestered as carbonate minerals and phototrophic biomass. CO₂ sequestration rates are mainly limited by cation availability and the uptake of CO₂. Abundant carbonate mineral precipitation occurred when heterotrophic oxidation of acetate acted as an alternative pathway for CO₂ delivery. These experiments highlight the importance of heterotrophy in producing sufficient DIC concentrations while phototrophy causes alkalinization of waters and produces biomass (fatty acids = 7.6 wt.%), a potential feedstock for biofuel production. Tailings storage facilities could be redesigned to promote CO₂ sequestration by directing leachate waters from tailings piles into specially designed ponds where carbonate precipitation would be mediated by both chemical and biological processes, thereby storing carbon in stable carbonate minerals and potentially valuable biomass.

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Crossref · 10.1021/es201648g

Cites

38 of 38 references verified0 citation errors · 0 not checkable

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  • By-products of carbonation, such as photoautotrophic biomass, can be harvested as biofuel.

    “Moreover, the by-products of carbonation, such as photoautotrophic biomass, can be harvested as biofuel [94].”
  • Cyanobacteria can mediate Mg-carbonate precipitation in the natural environment.

    “For example, cyanobacteria can mediate Mg-carbonate precipitation in the natural environment (Figure 3) [60,94].”
  • This biogeochemical process has potential to produce stable, long-term sinks for atmospheric CO2.

    “This biogeochemical process has potential to produce stable, long-”
  • Carbonate minerals are stable and long-lived, making them an ideal sink for surplus atmospheric CO2.

    “The stability and longevity of carbonate minerals make them an ideal sink for surplus atmospheric”
  • Biotic and abiotic acceleration strategies have proven effective in laboratory-scale studies.

    “Although these strategies have proven effective in laboratory-scale studies (e.g., [13,15,19,28,32,33]), pilot projects are crucially needed to evaluate strategies for accelerating carbon mineralization, which if successful and cost effective could be incorporated into TSF design with the purpose of sequestering CO 2 .”

    From Strategizing carbon-neutral mines: A case for pilot projects (2014) · cites this paper as [15]

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Authors
Power, I. M., Wilson, S., Small, D. P., Dipple, G. M., Wan, W., & Southam, G.
Affiliations
  • Western University (CA)
  • University of British Columbia (CA)
Corresponding author
Power, Ian M.
Venue
Environmental Science & Technology
Published
2011-08-31
Volume
45
Issue
20
Pages
9061-9068
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2017362990
Cited by
103
References
39
Citations by year
2026: 4 · 2025: 10 · 2024: 4 · 2023: 8 · 2022: 10 · 2021: 4 · 2020: 9 · 2019: 9 · 2018: 5 · 2017: 4 · 2016: 5 · 2015: 5 · 2014: 10 · 2013: 10 · 2012: 6
FWCI
7.37
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
  • Physical Sciences › Environmental Science › Environmental Engineering › Microbial Applications in Construction Materials
  • Physical Sciences › Environmental Science › Environmental Chemistry › Mine drainage and remediation techniques
Keywords
CO2 mineralization, CO2 sequestration, phototrophy, heterotrophy, acetate oxidation, carbonate precipitation, dissolved inorganic carbon, tailings dams, biofuel feedstock, fatty acids, Diavik Diamond Mine, geochemical modeling
MeSH terms
Biodegradation, Environmental, Carbon Dioxide, Minerals, Mining, Water Microbiology, Biomass, Phototrophic Processes, Heterotrophic Processes

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