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The Effect of Physicochemical Properties and Surface Chemistry on CO 2 Adsorption Capacity of Potassium Acetate-Treated Carbon Pellets

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  • Farihahusnah Hussin

    (Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
    Sunway Materials Smart Science and Engineering (SMS2E) Research Cluster, Sunway University, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia)

  • Nur Nadira Hazani

    (Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia)

  • Mohamed Kheireddine Aroua

    (Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
    Sunway Materials Smart Science and Engineering (SMS2E) Research Cluster, Sunway University, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
    School of Engineering, Lancaster University, Lancaster LA1 4YW, UK)

Abstract

The aim of this study is to prepare a carbon pellet using low-cost material and a green process with excellent surface properties for carbon dioxide (CO 2 ) capture application. To enhance the surface properties of the carbon pellet, a chemical activation method was introduced by modifying the pellet with potassium acetate. Then, the carbon pellet was tested in a packed-bed adsorption column to evaluate their performance for breakthrough time and CO 2 adsorption. The effect of the physicochemical and surface chemistry of the carbon pellet on CO 2 adsorption was also studied. The SEM image showed remarkable changes in the surface morphology of the carbon pellet after modification with potassium acetate. In addition, the presence of oxygen-containing functional groups such as hydroxyl and carbonyl groups in the modified carbon pellet could effectively enhance the CO 2 adsorption capacity. Thus, it is proven that the carbon pellet modified with potassium acetate is suitable for CO 2 adsorption. The results revealed that the CAC-PA 2M obtained the longest breakthrough time (19.4 min), higher adsorption capacity (0.685 mmol/g), and good recyclability (the regenerated sample can be reused for more than five cycles). The comprehensive characterization study and CO 2 adsorption experimental data on new carbon pellets can provide a direction for new researchers that are venturing into the CO 2 capture field.

Suggested Citation

  • Farihahusnah Hussin & Nur Nadira Hazani & Mohamed Kheireddine Aroua, 2023. "The Effect of Physicochemical Properties and Surface Chemistry on CO 2 Adsorption Capacity of Potassium Acetate-Treated Carbon Pellets," Sustainability, MDPI, vol. 15(6), pages 1-21, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:4903-:d:1092662
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    References listed on IDEAS

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    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. Zhu, Youjian & Yang, Wei & Fan, Jiyuan & Kan, Tao & Zhang, Wennan & Liu, Heng & Cheng, Wei & Yang, Haiping & Wu, Xuehong & Chen, Hanping, 2018. "Effect of sodium carboxymethyl cellulose addition on particulate matter emissions during biomass pellet combustion," Applied Energy, Elsevier, vol. 230(C), pages 925-934.
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    Cited by:

    1. Joanna Siemak & Beata Michalkiewicz, 2023. "Adsorption Equilibrium of CO 2 on Microporous Activated Carbon Produced from Avocado Stone Using H 2 SO 4 as an Activating Agent," Sustainability, MDPI, vol. 15(24), pages 1-28, December.

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