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Solubility of CO2 and density of CO2 hydrate at 30 MPa

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  • Aya, I.
  • Yamane, K.
  • Nariai, H.

Abstract

Data needed for evaluation of ocean CO2-sequestering technologies include the solubility of CO2 and density of CO2 hydrate at 30 MPa. Theses were measured using a high-pressure facility suitable for simulating pressure and temperature conditions 3000 m beneath the ocean surface. The solubility decreases linearly with decreasing water temperature, which is opposite to the temperature dependence in the non-hydrate region. The measured solubility agrees with the published value for the non-hydrate region at an equilibrium temperature of 12 °C. The hydrate density was estimated from pressure drop, temperature increase, and concentration changes, followed by precipitation of CO2 hydrate. The estimated CO2 hydrate density varies from 1.11 to 1.09, depending on the fraction of CO2 in hydrate form.

Suggested Citation

  • Aya, I. & Yamane, K. & Nariai, H., 1997. "Solubility of CO2 and density of CO2 hydrate at 30 MPa," Energy, Elsevier, vol. 22(2), pages 263-271.
    • Handle: RePEc:eee:energy:v:22:y:1997:i:2:p:263-271
    DOI: 10.1016/S0360-5442(96)00093-X
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    Cited by:

    1. Kuang, Yangmin & Zhang, Lunxiang & Zheng, Yanpeng, 2022. "Enhanced CO2 sequestration based on hydrate technology with pressure oscillation in porous medium using NMR," Energy, Elsevier, vol. 252(C).
    2. Ma, Z.W. & Zhang, P. & Bao, H.S. & Deng, S., 2016. "Review of fundamental properties of CO2 hydrates and CO2 capture and separation using hydration method," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1273-1302.
    3. Yuji Takagi & Akiko Kaneko & Yutaka Abe & Kenji Yamane, 2012. "Influence of CO2 Hydrate on Liquid CO2 Hydrodynamics for CCS under Ocean Floor," Energy and Environment Research, Canadian Center of Science and Education, vol. 2(1), pages 1-98, June.
    4. Zhang, Kai & Lau, Hon Chung, 2022. "Sequestering CO2 as CO2 hydrate in an offshore saline aquifer by reservoir pressure management," Energy, Elsevier, vol. 239(PC).

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