Cited by 216CO2 Sequestration and Geologic InteractionsConcrete and Cement Materials ResearchCarbon Dioxide Capture Technologies

CO2 Sequestration Potential of Steel Slags at Ambient Pressure and Temperature

Bonenfant, Danielle, Kharoune, Lynda, Sauve´, Sébastien, Hausler, Robert, Niquette, Patrick, Mimeault, Murielle, Kharoune, Mourad·2008·Industrial & Engineering Chemistry Research

Abstract

A study of carbon dioxide sequestration has been performed in aqueous electric arc furnace (EAF) and ladle furnace (LF) slag suspensions, in leached hydrated-matrixes, and in leachates to estimate their intrinsic sequestration potential at ambient conditions (temperature of 20 ± 1 °C and atmospheric pressure). The CO 2 sequestration was tested in aqueous suspensions of steel slags at a liquid-to-solid ratio of 10 kg/kg as well as in leached hydrated-matrixes and leachates isolated from these fresh slag suspensions after three consecutive leachings. The sequestration assays were performed at 20 °C with a flow rate of 5 mL/min of a CO 2 concentration of 15.00 vol %. The results have revealed that the CO 2 sequestration capacity of the LF slag suspension (24.7 g of CO 2 /100 g of slag) is 14 times superior to that of the EAF slag suspension. This greater CO 2 sequestration capacity of the LF slag suspension may be associated in large part to its higher content of portlandite, which reacts with CO 2 relative to the EAF slag suspension. Moreover, the separation of hydrated-matrixes and leachates significantly enhanced the CO 2 sequestration capacity of EAF slag while a slight decrease was observed for the LF slags. This may be due to an obstruction of the CO 2 binding sites of LF slag hydrated-matrixes following the accumulation of calcium carbonate. Taken together, these results suggest that EAF and LF slags could be used for the CO 2 sequestration and given a good yield as well in aqueous suspension as in separated matrixes and leachates.

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Crossref · 10.1021/ie701721j

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  • The CKD E CO2 uptake achieved was 8-25 wt% (0.08-0.25 t-CO2 per t-CKD,CBD) at ambient temperature and pressure in a column reactor or in a pressurized reactor.

    “The CKD E CO 2 uptake achieved was 8-25 wt% (i.e.0.08-0.25 t-CO 2 per t-CKD,CBD) at ambient temperature and pressure in a column reactor 132 or in a pressurized reactor.148”

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Authors
Bonenfant, D., Kharoune, L., Sauve´, S., Hausler, R., Niquette, P., Mimeault, M., & Kharoune, M.
Affiliations
  • University of Nebraska Medical Center (US)
  • STEPPE, Département de Génie de la Construction, Département de Génie Mécanique, and Département de Génie de la Production Automatisée, École de Technologie Supérieure, 1100, Notre-Dame Ouest, Montréal, Québec, Canada H3C 1K3, Département de Chimie, Université de Montréal, P.O. 6128, Succursale Centre-ville, Montréal, Québec, Canada H3C 3J7, and Department of Biochemistry and Molecular Biology, College of Medicine, Eppley Cancer Institute, 7052 DRC, University of Nebraska Medical Center, Omaha, Nebraska...
Corresponding author
Kharoune, Mourad
Venue
Industrial & Engineering Chemistry Research
Published
2008-09-26
Volume
47
Issue
20
Pages
7610-7616
ISSN
  • 0888-5885 (ISSN-L)
  • 1520-5045
OpenAlex
W2085526683
Cited by
215
References
14
Citations by year
2026: 8 · 2025: 23 · 2024: 21 · 2023: 12 · 2022: 10 · 2021: 26 · 2020: 14 · 2019: 14 · 2018: 5 · 2017: 8 · 2016: 13 · 2015: 10 · 2014: 14 · 2013: 9 · 2012: 7
FWCI
7.20
Type
journal article
Language
en
Open access
closed
Locations
  • Industrial & Engineering Chemistry Research (publishedVersion)
  • Espace ÉTS (ETS) (submittedVersion)
Funders
Natural Resources Canada
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete and Cement Materials Research
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
Keywords
CO2 sequestration, steel slag, electric arc furnace slag, ladle furnace slag, portlandite, calcium carbonate, ambient temperature

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