A Greenhouse-Scale photosynthetic microbial bioreactor for carbon sequestration in magnesium carbonate minerals
Abstract
A cyanobacteria dominated consortium collected from an alkaline wetland located near Atlin, British Columbia, Canada accelerated the precipitation of platy hydromagnesite [Mg5(CO3)4(OH)2·4H2O] in a linear flow-through experimental model wetland. The concentration of magnesium decreased rapidly within 2 m of the inflow point of the 10-m-long (∼1.5 m(2)) bioreactor. The change in water chemistry was monitored over two months along the length of the channel. Carbonate mineralization was associated with extra-cellular polymeric substances in the nutrient-rich upstream portion of the bioreactor, while the lower part of the system, which lacked essential nutrients, did not exhibit any hydromagnesite precipitation. A mass balance calculation using the water chemistry data produced a carbon sequestration rate of 33.34 t of C/ha per year. Amendment of the nutrient deficiency would intuitively allow for increased carbonation activity. Optimization of this process will have application as a sustainable mining practice by mediating magnesium carbonate precipitation in ultramafic mine tailings storage facilities.
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Integrated mineral carbonation processes in the mining industry that use mine wastes to trap CO2 are advantageous for their ability to manage CO2 emissions and remediate potentially hazardous materials such as chrysotile.
“Integrated mineral carbonation processes in the mining industry that use mine wastes (e.g., waste rock, tailings, and slag) to trap CO2 [59] are advantageous for their ability to manage CO2 emissions and remediate potentially hazardous materials (e.g., chrysotile) [60].”
From Integrated Mineral Carbonation of Ultramafic Mine Deposits—A Review (2018) · cites this paper as [60]
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].”
From Integrated Mineral Carbonation of Ultramafic Mine Deposits—A Review (2018) · cites this paper as [60]
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”
From Carbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals (2019) · cites this paper as [13]
This biogeochemical process has potential to produce stable, long-term sinks for atmospheric CO2.
“This biogeochemical process has potential to produce stable, long-”
From Carbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals (2019) · cites this paper as [13]
The ability of cyanobacteria to mediate precipitation of hydrated magnesium carbonate minerals could be stimulated by utilizing soluble magnesium derived from dissolution of ultramafic tailings.
“and could be stimulated by utilizing soluble magnesium derived from dissolution of ultramafic”
From Carbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals (2019) · cites this paper as [13]
With dypingite as the target mineral, the number of cycles of carbon fixation required to make the necessary hydroxyl and carbonate anions per molecule of dypingite produced was calculated as ten.
“the number of cycles of carbon fixation”
From Carbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals (2019) · cites this paper as [13]
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“For example, cyanobacteria can mediate Mg-carbonate precipitation in the natural environment (Figure 3) [60,94].”
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Self-citationCarbon Sequestration in Biogenic Magnesite and Other Magnesium Carbonate Minerals
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- Authors
- McCutcheon, J., Power, I. M., Harrison, A. L., Dipple, G. M., & Southam, G.
- Affiliations
- Western University (CA)
- University of British Columbia (CA)
- The University of Queensland (AU)
- Corresponding author
- McCutcheon, Jenine
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-07-29
- Volume
- 48
- Issue
- 16
- Pages
- 9142-9151
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2019114115
- Cited by
- 56
- References
- 20
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 3 · 2023: 5 · 2022: 8 · 2021: 2 · 2020: 5 · 2019: 4 · 2018: 6 · 2017: 6 · 2016: 5 · 2015: 4 · 2014: 2
- FWCI
- 4.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Science & Technology (publishedVersion)
- PubMed (publishedVersion)
- Bern Open Repository and Information System (University of Bern) (submittedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- Natural Sciences and Engineering Research Council of Canada (Discovery Grant)
- Carbon Management Canada
- 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 › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Keywords
- carbon sequestration, cyanobacteria, microbial bioreactors, magnesium carbonate minerals, extracellular polymeric substances, carbonate formation, nutrient limitation, mass balance
- MeSH terms
- Cyanobacteria, British Columbia, Industrial Waste, Magnesium, Mining, Photosynthesis, Water, Bioreactors, Carbon Sequestration
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