Molecular Simulation Models of Carbon Dioxide Intercalation in Hydrated Sodium Montmorillonite

Technical Report · Tue Nov 22 04:00:00 EST 2016

DOI:https://doi.org/10.18141/1432985· OSTI ID:1609149

Myshakin, Evgeniy ^[1]; Saidi, Wissam ^[2]; Romanov, Vyacheslav ^[1]; Cygan, Randall ^[3]; Jordan, Kenneth ^[4]; Guthrie, George ^[5]

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1. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States)
2. Univ. of Pittsburgh, PA (United States)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
4. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Univ. of Pittsburgh, PA (United States)
5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Carbon capture and storage (CCS) technologies provide effective options for reducing carbon dioxide (CO₂) emissions and mitigating global climate change. Geologic CO₂ storage involves the injection of supercritical CO₂ into deep geologic formations overlain by sealing formations and geologic traps that prevent the CO₂ from escaping. The ability of seals to retain injected CO₂ depends on their permeability and geomechanical property evolution. Caprocks are often comprised of shale or mudstone enriched with swelling clay minerals that can expand or contract upon interaction with CO₂. Intercalation of CO₂ into interlayer of swelling clay causes evolution of the geomechanical stress and can promote fracture formation. The interlayer of expanded clay provides ample space for additional permanent CO₂ storage and its subsequent transformation into carbonates.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• OSTI ID: 1609149
• Report Number(s): NETL-TRS--11-2016
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES