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A Combined Chemical-Electrochemical Process to Capture CO 2 and Produce Hydrogen and Electricity

Author

Listed:
  • Nabila Shamim

    (Department of Chemical Engineering, Prairie View A&M University, Prairie View, TX 77446, USA)

  • Shuza Binzaid

    (Department of Electrical & Computer Engineering, Prairie View A&M University, Prairie View, TX 77446, USA)

  • Jorge Federico Gabitto

    (Department of Chemical Engineering, Prairie View A&M University, Prairie View, TX 77446, USA)

  • John Okyere Attia

    (Department of Electrical & Computer Engineering, Prairie View A&M University, Prairie View, TX 77446, USA)

Abstract

Several carbon sequestration technologies have been proposed to utilize carbon dioxide (CO 2 ) to produce energy and chemical compounds. However, feasible technologies have not been adopted due to the low efficiency conversion rate and high-energy requirements. Process intensification increases the process productivity and efficiency by combining chemical reactions and separation operations. In this work, we present a model of a chemical-electrochemical cyclical process that can capture carbon dioxide as a bicarbonate salt. The proposed process also produces hydrogen and electrical energy. Carbon capture is enhanced by the reaction at the cathode that displaces the equilibrium into bicarbonate production. Literature data show that the cyclic process can produce stable operation for long times by preserving ionic balance using a suitable ionic membrane that regulates ionic flows between the two half-cells. Numerical simulations have validated the proof of concept. The proposed process could serve as a novel CO 2 sequestration technology while producing electrical energy and hydrogen.

Suggested Citation

  • Nabila Shamim & Shuza Binzaid & Jorge Federico Gabitto & John Okyere Attia, 2021. "A Combined Chemical-Electrochemical Process to Capture CO 2 and Produce Hydrogen and Electricity," Energies, MDPI, vol. 14(18), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5807-:d:635288
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    References listed on IDEAS

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    1. Katherine Bourzac, 2017. "We have the technology," Nature, Nature, vol. 550(7675), pages 66-69, October.
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    Cited by:

    1. Eugenio Meloni, 2022. "Electrification of Chemical Engineering: A New Way to Intensify Chemical Processes," Energies, MDPI, vol. 15(15), pages 1-3, July.

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