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    Influence of temperature and pressure on quartz–water–CO2 contact angle and CO2–water interfacial tension

    Access Status
    Fulltext not available
    Authors
    Sarmadivaleh, Mohammad
    Al'Yaseri, A.
    Iglauer, Stefan
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Sarmadivaleh, M. and Al'Yaseri, A. and Iglauer, S. 2015. Influence of temperature and pressure on quartz–water–CO2 contact angle and CO2–water interfacial tension. Journal of Colloid and Interface Science. 441: pp. 59-64.
    Source Title
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2014.11.010
    ISSN
    0021-9797
    School
    Department of Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/30367
    Collection
    • Curtin Research Publications
    Abstract

    We measured water–CO2 contact angles on a smooth quartz surface (RMS surface roughness ~40 nm) as a function of pressure and temperature. The advancing water contact angle θ was 0° at 0.1 MPa CO2 pressure and all temperatures tested (296–343 K); θ increased significantly with increasing pressure and temperature (θ = 35° at 296 K and θ = 56° at 343 K at 20 MPa). A larger θ implies less structural and residual trapping and thus lower CO2 storage capacities at higher pressures and temperatures. Furthermore we did not identify any significant influence of CO2–water equilibration on θ. Moreover, we measured the CO2–water interfacial tension γ and found that γ strongly decreased with increasing pressure up to ~10 MPa, and then decreased with a smaller slope with further increasing pressure. γ also increased with increasing temperature.

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