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A Review on CO 2 Sequestration via Mineralization of Coal Fly Ash

Author

Listed:
  • Long Jiang

    (North China Electric Power Research Institute Co., Ltd., Beijing 100045, China)

  • Liang Cheng

    (North China Electric Power Research Institute Co., Ltd., Beijing 100045, China)

  • Yuxuan Zhang

    (School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210042, China)

  • Gaojun Liu

    (North China Electric Power Research Institute Co., Ltd., Beijing 100045, China)

  • Jian Sun

    (School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210042, China)

Abstract

Coal fly ashes (COFA) are readily available and reactive materials suitable for CO 2 sequestration due to their substantial alkali components. Therefore, the onsite collaborative technology of COFA disposal and CO 2 sequestration in coal-fired power plants appears to have potential. This work provides an overview of the state-of-the-art research studies in the literature on CO 2 sequestration via the mineralization of COFA. The various CO 2 sequestration routes of COFA are summarized, mainly including direct and indirect wet carbonation, the synthesis of porous CO 2 adsorbents derived from COFA, and the development of COFA-derived inert supports for gas-solid adsorbents. The direct and indirect wet carbonation of COFA is the most concerned research technology route, which can obtain valued Ca-based by-products while achieving CO 2 sequestration. Moreover, the Al and Si components rich in fly ash can be adapted to produce zeolite, hierarchical porous nano-silica, and nano-silicon/aluminum aerogels for producing highly efficient CO 2 adsorbents. The prospects of CO 2 sequestration technologies using COFA are also discussed. The objective of this work is to help researchers from academia and industry keep abreast of the latest progress in the study of CO 2 sequestration by COFA.

Suggested Citation

  • Long Jiang & Liang Cheng & Yuxuan Zhang & Gaojun Liu & Jian Sun, 2023. "A Review on CO 2 Sequestration via Mineralization of Coal Fly Ash," Energies, MDPI, vol. 16(17), pages 1-24, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6241-:d:1227051
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    References listed on IDEAS

    as
    1. Guo, Baihe & Zhang, Jingchao & Wang, Yanlin & Qiao, Xiaolei & Xiang, Jun & Jin, Yan, 2023. "Study on CO2 adsorption capacity and kinetic mechanism of CO2 adsorbent prepared from fly ash," Energy, Elsevier, vol. 263(PB).
    2. Ukwattage, N.L. & Ranjith, P.G. & Wang, S.H., 2013. "Investigation of the potential of coal combustion fly ash for mineral sequestration of CO2 by accelerated carbonation," Energy, Elsevier, vol. 52(C), pages 230-236.
    3. Rong Liu & Xiaolong Wang & Shiwang Gao, 2020. "CO2 capture and mineralization using carbide slag doped fly ash," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(1), pages 103-115, February.
    4. Wee, Jung-Ho, 2013. "A review on carbon dioxide capture and storage technology using coal fly ash," Applied Energy, Elsevier, vol. 106(C), pages 143-151.
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