International Journal of Economy, Energy and Environment

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Modification of Waste-derived CaO Using Organic Acids for CO2 Capture

Received: Nov. 02, 2019    Accepted:     Published: Jan. 06, 2020
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Abstract

Calcium looping is a widely used CO2 capture technology, where calcium oxide (CaO) is used as a sorbent. However, it has many drawbacks such as expensive raw material and reduction in sorbent capacity over multiple cycles. This study is aimed at developing economic as well as environment friendly sorbents for CO2 capturing. For this purpose, chicken eggshells were collected from household municipal waste as a CaO sorbent for CO2 capture. The eggshell sorbent was characterized using different techniques such as SEM-EDS, XRD and TGA. Three different organic acids were used to improve the conversion of eggshell sorbents i.e., lactic, oxalic and tartaric acid. The results showed that one out of three acids i.e., lactic acid (ES LA-10%) showed improved conversion and stability over a period of 20 cycles as compared to other acids. In terms of CaO conversion ES LA-10% displayed the maximum performance of 47.8% and had improved cyclic stability during 20 cycles. Hence, this study showed that modifying sorbent (eggshells) by using acid is a better sorbent in comparison with other natural and synthetic sorbent, therefore reducing waste and cost simultaneously.

DOI 10.11648/j.ijeee.20190406.13
Published in International Journal of Economy, Energy and Environment ( Volume 4, Issue 6, December 2019 )
Page(s) 132-135
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Eggshell, Organic Acids, CaO Based Sorbent, CO2 Capture

References
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  • APA Style

    Azra Nawar, Majid Ali, Rashid Khan, Mariam Mahmood. (2020). Modification of Waste-derived CaO Using Organic Acids for CO2 Capture. International Journal of Economy, Energy and Environment, 4(6), 132-135. https://doi.org/10.11648/j.ijeee.20190406.13

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    ACS Style

    Azra Nawar; Majid Ali; Rashid Khan; Mariam Mahmood. Modification of Waste-derived CaO Using Organic Acids for CO2 Capture. Int. J. Econ. Energy Environ. 2020, 4(6), 132-135. doi: 10.11648/j.ijeee.20190406.13

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    AMA Style

    Azra Nawar, Majid Ali, Rashid Khan, Mariam Mahmood. Modification of Waste-derived CaO Using Organic Acids for CO2 Capture. Int J Econ Energy Environ. 2020;4(6):132-135. doi: 10.11648/j.ijeee.20190406.13

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  • @article{10.11648/j.ijeee.20190406.13,
      author = {Azra Nawar and Majid Ali and Rashid Khan and Mariam Mahmood},
      title = {Modification of Waste-derived CaO Using Organic Acids for CO2 Capture},
      journal = {International Journal of Economy, Energy and Environment},
      volume = {4},
      number = {6},
      pages = {132-135},
      doi = {10.11648/j.ijeee.20190406.13},
      url = {https://doi.org/10.11648/j.ijeee.20190406.13},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ijeee.20190406.13},
      abstract = {Calcium looping is a widely used CO2 capture technology, where calcium oxide (CaO) is used as a sorbent. However, it has many drawbacks such as expensive raw material and reduction in sorbent capacity over multiple cycles. This study is aimed at developing economic as well as environment friendly sorbents for CO2 capturing. For this purpose, chicken eggshells were collected from household municipal waste as a CaO sorbent for CO2 capture. The eggshell sorbent was characterized using different techniques such as SEM-EDS, XRD and TGA. Three different organic acids were used to improve the conversion of eggshell sorbents i.e., lactic, oxalic and tartaric acid. The results showed that one out of three acids i.e., lactic acid (ES LA-10%) showed improved conversion and stability over a period of 20 cycles as compared to other acids. In terms of CaO conversion ES LA-10% displayed the maximum performance of 47.8% and had improved cyclic stability during 20 cycles. Hence, this study showed that modifying sorbent (eggshells) by using acid is a better sorbent in comparison with other natural and synthetic sorbent, therefore reducing waste and cost simultaneously.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Modification of Waste-derived CaO Using Organic Acids for CO2 Capture
    AU  - Azra Nawar
    AU  - Majid Ali
    AU  - Rashid Khan
    AU  - Mariam Mahmood
    Y1  - 2020/01/06
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ijeee.20190406.13
    DO  - 10.11648/j.ijeee.20190406.13
    T2  - International Journal of Economy, Energy and Environment
    JF  - International Journal of Economy, Energy and Environment
    JO  - International Journal of Economy, Energy and Environment
    SP  - 132
    EP  - 135
    PB  - Science Publishing Group
    SN  - 2575-5021
    UR  - https://doi.org/10.11648/j.ijeee.20190406.13
    AB  - Calcium looping is a widely used CO2 capture technology, where calcium oxide (CaO) is used as a sorbent. However, it has many drawbacks such as expensive raw material and reduction in sorbent capacity over multiple cycles. This study is aimed at developing economic as well as environment friendly sorbents for CO2 capturing. For this purpose, chicken eggshells were collected from household municipal waste as a CaO sorbent for CO2 capture. The eggshell sorbent was characterized using different techniques such as SEM-EDS, XRD and TGA. Three different organic acids were used to improve the conversion of eggshell sorbents i.e., lactic, oxalic and tartaric acid. The results showed that one out of three acids i.e., lactic acid (ES LA-10%) showed improved conversion and stability over a period of 20 cycles as compared to other acids. In terms of CaO conversion ES LA-10% displayed the maximum performance of 47.8% and had improved cyclic stability during 20 cycles. Hence, this study showed that modifying sorbent (eggshells) by using acid is a better sorbent in comparison with other natural and synthetic sorbent, therefore reducing waste and cost simultaneously.
    VL  - 4
    IS  - 6
    ER  - 

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Author Information
  • US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan

  • US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan

  • School of Environment, Tsinghua University, Beijing, China

  • US-Pakistan Centre for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, Pakistan

  • Section