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Flue gas CO2 capture via electrochemically mediated amine regeneration: System design and performance

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  • Wang, Miao
  • Rahimi, Mohammad
  • Kumar, Amit
  • Hariharan, Subrahmaniam
  • Choi, Wonyoung
  • Hatton, T. Alan

Abstract

The electrochemically-mediated amine regeneration (EMAR) process uses electrons to modulate amine capacity to achieve CO2 separation from flue gas as an alternative to the traditional thermal regeneration process for CO2 capture. The EMAR separation scheme is validated in a batch system designed to evaluate efficiency losses. Current and voltage responses of the electrochemical process were analyzed in a flow system operated continuously for up to 50 h. An isothermal EMAR system can achieve separation efficiencies above 80% from a 15% CO2 feed, which is representative of the CO2 composition in a flue gas. This bench scale continuous system can operate at 40–80 kJe/molCO2 with an amine regeneration of between 0.12 and 0.62 molCO2/molamine. The ability to separate CO2 at high electron utilization and moderate electrical energy consumption will prompt future research into optimization of the electrochemical separation unit to obtain long-term and stable operations for flue gas scrubbing.

Suggested Citation

  • Wang, Miao & Rahimi, Mohammad & Kumar, Amit & Hariharan, Subrahmaniam & Choi, Wonyoung & Hatton, T. Alan, 2019. "Flue gas CO2 capture via electrochemically mediated amine regeneration: System design and performance," Applied Energy, Elsevier, vol. 255(C).
    • Handle: RePEc:eee:appene:v:255:y:2019:i:c:s0306261919315661
    DOI: 10.1016/j.apenergy.2019.113879
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    Cited by:

    1. Fan, Huifeng & Mao, Yuanhao & Gao, Jifeng & Tong, Shuyue & Yu, Yunsong & Wu, Xiaomei & Zhang, Zaoxiao, 2023. "Combined experimental and computational study for the electrode process of electrochemically mediated amine regeneration (EMAR) CO2 capture," Applied Energy, Elsevier, vol. 350(C).
    2. Mohammadpour, Hossein & Cord-Ruwisch, Ralf & Pivrikas, Almantas & Ho, Goen, 2022. "Simple energy-efficient electrochemically-driven CO2 scrubbing for biogas upgrading," Renewable Energy, Elsevier, vol. 195(C), pages 274-282.
    3. Adefarati Oloruntoba & Yongmin Zhang & Chang Samuel Hsu, 2022. "State-of-the-Art Review of Fluid Catalytic Cracking (FCC) Catalyst Regeneration Intensification Technologies," Energies, MDPI, vol. 15(6), pages 1-75, March.
    4. Wu, Xiaomei & Mao, Yuanhao & Fan, Huifeng & Sultan, Sayd & Yu, Yunsong & Zhang, Zaoxiao, 2023. "Investigation on the performance of EDA-based blended solvents for electrochemically mediated CO2 capture," Applied Energy, Elsevier, vol. 349(C).
    5. Lin, Zi & Liu, Xiaolei & Lao, Liyun & Liu, Hengxu, 2020. "Prediction of two-phase flow patterns in upward inclined pipes via deep learning," Energy, Elsevier, vol. 210(C).
    6. Wu, Xiaomei & Fan, Huifeng & Mao, Yuanhao & Sharif, Maimoona & Yu, Yunsong & Zhang, Zaoxiao & Liu, Guangxin, 2022. "Systematic study of an energy efficient MEA-based electrochemical CO2 capture process: From mechanism to practical application," Applied Energy, Elsevier, vol. 327(C).
    7. Xing Li & Xunhua Zhao & Lingyu Zhang & Anmol Mathur & Yu Xu & Zhiwei Fang & Luo Gu & Yuanyue Liu & Yayuan Liu, 2024. "Redox-tunable isoindigos for electrochemically mediated carbon capture," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    8. Zhen Xu & Grace Mapstone & Zeke Coady & Mengnan Wang & Tristan L. Spreng & Xinyu Liu & Davide Molino & Alexander C. Forse, 2024. "Enhancing electrochemical carbon dioxide capture with supercapacitors," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    9. Wu, Xiaomei & Fan, Huifeng & Sharif, Maimoona & Yu, Yunsong & Wei, Keming & Zhang, Zaoxiao & Liu, Guangxin, 2021. "Electrochemically-mediated amine regeneration of CO2 capture: From electrochemical mechanism to bench-scale visualization study," Applied Energy, Elsevier, vol. 302(C).
    10. Shamair, Zufishan & Habib, Nitasha & Gilani, Mazhar Amjad & Khan, Asim Laeeq, 2020. "Theoretical and experimental investigation of CO2 separation from CH4 and N2 through supported ionic liquid membranes," Applied Energy, Elsevier, vol. 268(C).
    11. Yang, Qiulian & Li, Haitao & Wang, Dong & Zhang, Xiaochun & Guo, Xiangqian & Pu, Shaochen & Guo, Ruixin & Chen, Jianqiu, 2020. "Utilization of chemical wastewater for CO2 emission reduction: Purified terephthalic acid (PTA) wastewater-mediated culture of microalgae for CO2 bio-capture," Applied Energy, Elsevier, vol. 276(C).
    12. Chen, Hao & Dong, Sheying & Zhang, Yaojun & He, Panyang, 2022. "A comparative study on energy efficient CO2 capture using amine grafted solid sorbent: Materials characterization, isotherms, kinetics and thermodynamics," Energy, Elsevier, vol. 239(PD).
    13. Mohammad Rahimi, 2020. "Public Awareness: What Climate Change Scientists Should Consider," Sustainability, MDPI, vol. 12(20), pages 1-4, October.

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