Energy Consumption and Net CO 2 Sequestration of Aqueous Mineral Carbonation
Open accessAbstract
Aqueous mineral carbonation is a potentially attractive sequestration technology to reduce CO 2 emissions. The energy consumption of this technology, however, reduces the net amount of CO 2 sequestered. Therefore, the energetic CO 2 sequestration efficiency of aqueous mineral carbonation was studied in dependence of various process variables using either wollastonite (CaSiO 3 ) or steel slag as feedstock. For wollastonite, the maximum energetic CO 2 sequestration efficiency within the ranges of process conditions studied was 75% at 200 °C, 20 bar CO 2, and a particle size of <38 μm. The main energy-consuming process steps were the grinding of the feedstock and the compression of the CO 2 feed. At these process conditions, a significantly lower efficiency was determined for steel slag (69%), mainly because of the lower Ca content of the feedstock. The CO 2 sequestration efficiency might be improved substantially for both types of feedstock by, e.g., reducing the amount of process water applied and further grinding of the feedstock. The calculated energetic efficiencies warrant a further assessment of the (energetic) feasibility of CO 2 sequestration by aqueous mineral carbonation on the basis of a pilot-scale process.
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Kwak and co-workers found a final CO2 storage capacity of 8% for direct aqueous carbonation of finely ground olivine (forsterite) (1 g) mixed with water (1 g) at 80 1C and 97 bar for 20 h.
“Kwak and co-workers 78,79 investigated the reaction pathways and reaction extent of direct aqueous carbonation of finely ground olivine (forsterite) (1 g) mixed with water (1 g) and fed into a batch reactor with a volume of 11.7 mL.The reaction was kept at 80 1C and 97 bar for 20 h with a final CO 2 storage capacity of 8%.”
From A review of mineral carbonation technologies to sequester CO <sub>2</sub> (2014) · cites this paper as [78]
The CO2 storage capacity was increased to 67% but required 7 days.
“The capacity was increased to 67% but it required 7 days.”
From A review of mineral carbonation technologies to sequester CO <sub>2</sub> (2014) · cites this paper as [78]
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- Authors
- Huijgen, W. J. J., Ruijg, G. J., Comans, R. N. J., & Witkamp, G.-J.
- Affiliations
- Energy Research Centre of the Netherlands (NL)
- Corresponding author
- Comans, Rob N. J.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-11-08
- Volume
- 45
- Issue
- 26
- Pages
- 9184-9194
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2140026551
- Cited by
- 162
- References
- 0
- Citations by year
- 2026: 11 · 2025: 11 · 2024: 18 · 2023: 16 · 2022: 6 · 2021: 10 · 2020: 13 · 2019: 7 · 2018: 5 · 2017: 12 · 2016: 7 · 2015: 2 · 2014: 10 · 2013: 10 · 2012: 6
- FWCI
- 2.09
- Type
- journal article
- Language
- en
- Open access
- green
- research.wur.nl
- Locations
- Industrial & Engineering Chemistry Research (publishedVersion)
- Socio-Environmental Systems Modeling (acceptedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Engineering › Civil and Structural Engineering › Concrete and Cement Materials Research
- Keywords
- aqueous mineral carbonation, CO2 sequestration, energy consumption, energy efficiency, wollastonite, steel slag, particle size, CO2 compression, process water, CO2 emission reduction
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