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    The Effect of Monoethylene Glycol on Calcium Carbonate Solubility at High Temperatures

    Access Status
    Fulltext not available
    Authors
    Odeigah, E.
    Pojtanabuntoeng, Kod
    Jones, Franca
    Gubner, Rolf
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Odeigah, E. and Pojtanabuntoeng, K. and Jones, F. and Gubner, R. 2018. The Effect of Monoethylene Glycol on Calcium Carbonate Solubility at High Temperatures. Industrial and Engineering Chemistry Research. 57 (46): pp. 15909-15915.
    Source Title
    Industrial and Engineering Chemistry Research
    DOI
    10.1021/acs.iecr.8b03761
    ISSN
    0888-5885
    URI
    http://hdl.handle.net/20.500.11937/71472
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © 2018 American Chemical Society. This study presents the solubility of calcium carbonate in monoethylene glycol (MEG)/water solution at high temperatures and high MEG concentrations. The conditions simulate the water removal process during MEG regeneration. Solubility was measured by dissolution at equilibrium, and the thermodynamics of the dissolution process of calcium carbonate was also explored. The solubility of calcium carbonate decreased with increasing temperature up to 120 °C and showed a slight increase above 120 °C. The presence of MEG increased the activity coefficient of calcium carbonate and calcium ions with respect to temperature. The effect of MEG degradation on the solubility of calcium carbonate was also studied. At all temperatures studied (90 to 145 °C), MEG degraded in the presence of residual dissolved oxygen to produce acetate ions which complexed with calcium ions resulting in an increase in calcium solubility.

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