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Effect of moisture on the heat capacity and the regeneration heat required for CO 2 capture process using PEI impregnated mesoporous precipitated silica

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Listed:
  • Dang Viet Quang
  • Abdallah Dindi
  • Aravind V Rayer
  • Nabil El Hadri
  • Abdurahim Abdulkadir
  • Mohammad R.M. Abu‐Zahra

Abstract

In this study, we report the effect of the moisture of polyethylenimine (PEI) impregnated mesoporous precipitated silica used for CO 2 adsorption on the heat capacity and the heat required to regenerate the adsorbent. The results indicate that the heat capacity of the absorbent increases as its moisture content increases. The increase in moisture results in the rise of the vaporization heat of water and the elevated heat capacity results in higher sensible heat. For these reasons, the total regeneration heat required for CO 2 capture process increases significantly. The adsorbent has a maximum CO 2 adsorption capacity at 75 °C. CO 2 capture process using PEI impregnated mesoporous precipitated silica requires a minimum energy to regenerate the adsorbent; it reduces 46% of the energy compared to a process using an aqueous MEA 30 wt%, as the process operates at 75 °C.

Suggested Citation

  • Dang Viet Quang & Abdallah Dindi & Aravind V Rayer & Nabil El Hadri & Abdurahim Abdulkadir & Mohammad R.M. Abu‐Zahra, 2015. "Effect of moisture on the heat capacity and the regeneration heat required for CO 2 capture process using PEI impregnated mesoporous precipitated silica," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 5(1), pages 91-101, February.
    • Handle: RePEc:wly:greenh:v:5:y:2015:i:1:p:91-101
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    File URL: http://hdl.handle.net/10.1002/ghg.1427
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    Cited by:

    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. Liu, Yamin & Yu, Xiaojing, 2018. "Carbon dioxide adsorption properties and adsorption/desorption kinetics of amine-functionalized KIT-6," Applied Energy, Elsevier, vol. 211(C), pages 1080-1088.
    3. Xu, Chenhuan & Zhang, Yongmin & Yang, Tianlei & Jia, Xiaohao & Qiu, Feng & Liu, Cenfan & Jiang, Shuai, 2023. "Adsorption mechanisms and regeneration heat analysis of a solid amine sorbent during CO2 capture in wet flue gas," Energy, Elsevier, vol. 284(C).

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