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Fabrication of Bamboo-Based Activated Carbon for Low-Level CO 2 Adsorption toward Sustainable Indoor Air

Author

Listed:
  • Sujeong Heo

    (Department of Applied Environmental Science, Kyung Hee University, Yogin-si 17104, Gyeonggi-do, Republic of Korea)

  • Wooram Kim

    (Department of Applied Environmental Science, Kyung Hee University, Yogin-si 17104, Gyeonggi-do, Republic of Korea)

  • Youngmin Jo

    (Department of Applied Environmental Science, Kyung Hee University, Yogin-si 17104, Gyeonggi-do, Republic of Korea)

  • Adedeji Adebukola Adelodun

    (Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
    Department of Marine Science and Technology, The Federal University of Technology, P.M.B. 704, Akure 340110, Nigeria)

Abstract

This study fabricated a low-cost activated carbon (AC) adsorbent from readily available bamboo trees to control indoor CO 2 levels and reduce energy costs associated with sustaining clean indoor air. Bamboo is naturally high in potassium content and has narrow fibrous channels that could enhance selective CO 2 adsorption. The prepared bamboo-based activated carbon (BAC) exhibits predominantly micropores with an average pore size of 0.17 nm and a specific surface area of 984 m 2 /g. Upon amination, amine functionalities, such as pyridine, pyrrole, and quaternary N, were formed on its surface, enhancing its CO 2 adsorption capacity of 0.98 and 1.80 mmol/g for low-level (3000 ppm) and pure CO 2 flows at the ambient condition, respectively. In addition, the 0.3% CO 2 /N 2 selectivity (α s,g ) of the prepared sorbents revealed a superior affinity of CO 2 by BAC (8.60) over coconut shell-based adsorbents (1.16–1.38). Furthermore, amination enhanced BAC’s CO 2 α s,g to 13.4. These results exhibit this sustainable approach’s potential capabilities to ensure the control of indoor CO 2 levels, thereby reducing the cost associated with mechanical ventilation systems. Further research should test the new sorbent’s adsorption properties (isotherm, kinetics, and thermodynamics) for real-life applicability.

Suggested Citation

  • Sujeong Heo & Wooram Kim & Youngmin Jo & Adedeji Adebukola Adelodun, 2024. "Fabrication of Bamboo-Based Activated Carbon for Low-Level CO 2 Adsorption toward Sustainable Indoor Air," Sustainability, MDPI, vol. 16(4), pages 1-18, February.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:4:p:1634-:d:1339893
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    References listed on IDEAS

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    1. Lee, Minjung & Ham, Jeonggyun & Lee, Jeong-Won & Cho, Honghyun, 2023. "Analysis of thermal comfort, energy consumption, and CO2 reduction of indoor space according to the type of local heating under winter rest conditions," Energy, Elsevier, vol. 268(C).
    2. Mehzabeen Mannan & Sami G. Al-Ghamdi, 2021. "Indoor Air Quality in Buildings: A Comprehensive Review on the Factors Influencing Air Pollution in Residential and Commercial Structure," IJERPH, MDPI, vol. 18(6), pages 1-25, March.
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