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Energy and Environmental Analysis of Membrane-Based CH 4 -CO 2 Replacement Processes in Natural Gas Hydrates

Author

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  • Beatrice Castellani

    (CIRIAF, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy)

  • Alberto Maria Gambelli

    (CIRIAF, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy)

  • Andrea Nicolini

    (CIRIAF, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy)

  • Federico Rossi

    (CIRIAF, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy)

Abstract

Natural gas hydrates are the largest reservoir of natural gas worldwide. This paper proposes and analyzes the CH 4 -CO 2 replacement in the hydrate phase and pure methane collection through the use of membrane-based separation. The investigation uses a 1 L lab reactor, in which the CH 4 hydrates are formed in a quartz sand matrix partially saturated with water. CH 4 is subsequently dissociated with a CO 2 stream supplied within the sediment inside the reactor. An energy and environmental analysis was carried out to prove the sustainability of the process. Results show that the process energy consumption constitutes 4.75% of the energy stored in the recovered methane. The carbon footprint of the CH 4 -CO 2 exchange process is calculated as a balance of the CO 2 produced in the process and the CO 2 stored in system. Results provide an estimated negative value, equal to 0.004 moles sequestrated, thus proving the environmental benefit of the exchange process.

Suggested Citation

  • Beatrice Castellani & Alberto Maria Gambelli & Andrea Nicolini & Federico Rossi, 2019. "Energy and Environmental Analysis of Membrane-Based CH 4 -CO 2 Replacement Processes in Natural Gas Hydrates," Energies, MDPI, vol. 12(5), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:850-:d:210949
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    References listed on IDEAS

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    Cited by:

    1. Xueping Chen & Shuaijun Li & Peng Zhang & Wenting Chen & Qingbai Wu & Jing Zhan & Yingmei Wang, 2021. "Promoted Disappearance of CO 2 Hydrate Self-Preservation Effect by Surfactant SDS," Energies, MDPI, vol. 14(13), pages 1-14, June.
    2. Shmulik Pinkert, 2019. "Dilation Behavior of Gas-Saturated Methane-Hydrate Bearing Sand," Energies, MDPI, vol. 12(15), pages 1-14, July.
    3. Marat K. Khasanov & Guzal R. Rafikova & Nail G. Musakaev, 2020. "Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate," Energies, MDPI, vol. 13(2), pages 1-17, January.
    4. Liu, Fa-Ping & Li, Ai-Rong & Qing, Sheng-Lan & Luo, Ze-Dong & Ma, Yu-Ling, 2022. "Formation kinetics, mechanism of CO2 hydrate and its applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 159(C).
    5. Ren, Junjie & Zeng, Siyu & Chen, Daoyi & Yang, Mingjun & Linga, Praveen & Yin, Zhenyuan, 2023. "Roles of montmorillonite clay on the kinetics and morphology of CO2 hydrate in hydrate-based CO2 sequestration1," Applied Energy, Elsevier, vol. 340(C).

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