Japan Geoscience Union Meeting 2023

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[J] Oral

H (Human Geosciences ) » H-SC Social Earth Sciences & Civil/Urban System Sciences

[H-SC04] CCUS (Carbon Dioxide Capture, Utilization, and Storage) for Climate Mitigation

Wed. May 24, 2023 9:00 AM - 10:30 AM 201B (International Conference Hall, Makuhari Messe)

convener:Masao Sorai(Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology), Ziqiu Xue(Research Institute of Innovative Tech for the Earth), Masaatsu Aichi(Graduate School of Frontier Sciences, University of Tokyo), Yoshihiro Konno(The University of Tokyo, Japan), Chairperson:Masaatsu Aichi(Graduate School of Frontier Sciences, University of Tokyo)

9:30 AM - 9:45 AM

[HSC04-03] Study on phase behaviors and dynamics of carbon dioxide and water systems by molecular dynamics simulations

*Masashige Shiga1, Tetsuya Morishita2, Masao Sorai1 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology)

Keywords:CO2 geological storage and utilization, Geothermal reservoirs, Phase behaviors, Molecular dynamics simulations

CO2-EGS (Enhanced Geothermal Systems) has garnered significant attention as a viable option for the advancement of sustainable energy development. To gain a deeper understanding of the fundamental physical properties associated with this technology, molecular dynamics simulations were conducted to compute the phase behavior of CO2 + water systems under varying conditions ranging from 40°C to 300°C. Through the analysis of dynamics, in conjunction with an investigation of molecular structure during phase change, the physical properties underlying the estimation and interpretation of transport properties were examined and discussed.