Cited by 189CO2 Sequestration and Geologic InteractionsCarbon Dioxide Capture TechnologiesConcrete and Cement Materials Research

Carbon sequestration through accelerated carbonation of BOF slag: Influence of particle size characteristics

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Polettini, A., Pomi, R., Stramazzo, A.·2016·Chemical Engineering Journal

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Registry

Crossref · 10.1016/j.cej.2016.04.015

Cites

39 of 39 references verified0 citation errors · 0 not checkable

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  • Small particles have a large specific surface area for carbonation reactions, and small particle size facilitates release of metal (Ca2+/Mg2+) ions.

    “This is because (i) particles with small sizes have a large specific surface area for carbonation reactions, and (ii) the small particle size facilitates the release of metal (Ca 2+ /Mg 2+ ) ions [64,104,105].”
  • With particle size reducing from 1000 to approximately 80 μm, CO2 uptake of slag increased exponentially.

    “With the particle size reducing from 1000 to approximately 80 µm, the CO 2 uptake of the slag was found to increase exponentially (see the grey trend line in Fig. 7).”
  • Decreased CO2 uptake of slag at smaller particle sizes may be because accelerated carbonation reactions are counterbalanced by fast formation of calcite layer, and reduced particle size promotes dissolution of silicate phases and incongruent precipitation of amorphous silica gel on slag surface hindering further carbonation.

    “Two possible reasons may explain the decreased CO 2 uptake: (i) the accelerated carbonation reactions of slag caused by reducing particle sizes is counterbalanced by the fast formation of the calcite layer (as illustrated in Fig. 2); and (ii) the reduced particle size promotes the dissolution of silicate phases and subsequent incongruent precipitation of amorphous silica gel on the surface of slag”
  • With further reduction in particle size below approximately 80 μm, CO2 uptake capacity of slag decreased.

    “Then, with the further reduction in the particle size, the CO 2 uptake capacity decreased.”

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Authors
Polettini, A., Pomi, R., & Stramazzo, A.
Affiliations
Sapienza University of Rome (IT)
Corresponding author
Polettini, A.
Venue
Chemical Engineering Journal
Publisher
Elsevier BV
Published
2016-08
Volume
298
Pages
26-35
ISSN
1385-8947 (ISSN-L)
OpenAlex
W2332506106
Cited by
189
References
41
Citations by year
2026: 27 · 2025: 37 · 2024: 39 · 2023: 22 · 2022: 19 · 2021: 12 · 2020: 11 · 2019: 9 · 2018: 10 · 2017: 2 · 2016: 1
FWCI
4.58
Type
journal article
Language
en
Open access
Locations
  • Chemical Engineering Journal (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, cc-by-nc-nd)
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
carbon sequestration, accelerated carbonation, basic oxygen furnace slag, particle size distribution, CO2 uptake, carbonate precipitation, pore blocking, particle erosion, geochemical modeling, mineral transformation, pore size distribution, steel slag utilization

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