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    Investigations of crude-oil emulsions at the micro-to-nano scales

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    Name:
    CryoEM_crude_oil_Final_revised.pdf
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    1.025Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Embargo End Date:
    2023-12-01
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    Type
    Article
    Authors
    Ravaux, Florent
    Medina, Sandra Constanza
    Behzad, Ali Reza
    Zafar, Humaira
    George, Abraham
    Morin, Stephane
    Ghaffour, NorEddine cc
    Anjum, Dalaver H.
    KAUST Department
    Environmental Science and Engineering Program
    Biological and Environmental Science and Engineering (BESE) Division
    Imaging and Characterization Core Lab
    Bioscience Core Lab
    Electron Microscopy
    Date
    2021-12-08
    Online Publication Date
    2021-12
    Print Publication Date
    2022-04
    Embargo End Date
    2023-12-01
    Permanent link to this record
    http://hdl.handle.net/10754/673964
    
    Metadata
    Show full item record
    Abstract
    The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil provides critical information on their stability. Specifically, the cryoSEM imaging analysis applied to emulsion of murban-2019, and upper zakum-2019 crude-oils allowed determining naturally occurring surfactants in these crude-oils. Moreover, the applied method also turned out to be an efficient way to qualitatively investigate the effect of synthetic surfactant on the stability of the emulsions. The high resolution cryoTEM imaging analysis of emulsions from upper zakum-2019 sample enabled visualizing “bilayer” of naturally occurring surfactants, presumably the asphaltene. The cryoTEM analysis further allowed estimating the volume-fraction of emulsified water in the crude-oil at nanoscales and turned out to be about 1% for the upper zakum-2019 samples.
    Citation
    Ravaux, F., Medina, S., Behzad, A. R., Zafar, H., George, A., Morin, S., … Anjum, D. H. (2021). Investigations of crude-oil emulsions at the micro-to-nano scales. Fuel, 122692. doi:10.1016/j.fuel.2021.122692
    Sponsors
    The authors extend their appreciation to Khalifa University’s Faculty Startup (FSU) program for partially funding this research work under the project ID: FSU-2020-04, 2020 and to Abu Dhabi, and to King Abdullah University of Science and Technology (KAUST), Kingdom of Saudi Arabia for the use of cryo-EM equipment.
    Publisher
    Elsevier BV
    Journal
    Fuel
    DOI
    10.1016/j.fuel.2021.122692
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0016236121025588
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.fuel.2021.122692
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Bioscience Core Lab

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