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    NEXARTM-coated hollow fibers for air dehumidification

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    Name:
    N_NEXAR.pdf
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    4.848Mb
    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Upadhyaya, Lakshmeesha
    Gebreyohannes, Abaynesh Yihdego cc
    Akhtar, Faheem cc
    Falca, Gheorghe
    Musteata, Valentina-Elena
    Mahalingam, Dinesh K.
    Almansoury, Rneem
    Ng, Kim Choon cc
    Nunes, Suzana Pereira cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Nanostructured Polymeric Membrane Lab
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2020-07-22
    Online Publication Date
    2020-07-22
    Print Publication Date
    2020-11
    Embargo End Date
    2022-07-22
    Submitted Date
    2020-04-28
    Permanent link to this record
    http://hdl.handle.net/10754/664386
    
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    Abstract
    Air conditioning is one of the essential requirements for households as well as work stations. Dehumidification in air conditioning is the highest energy-consuming component, where membranes could play a crucial role. In this work, we propose the coating of NEXARTM, a commercial pentablock copolymer in tetrahydrofuran on polyetherimide hollow fiber support for separation of water vapor from humidified air. The block copolymer in tetrahydrofuran forms a lamellar/parallel cylindrical structure separated by equidistance during the morphological transformation process giving its unique characteristics with higher water vapor transfer efficiency. Both vacuum and sweep gas modes of membrane dehumidification strategies are investigated along with the detailed study of the morphological transformation process under a controlled environment, which is supported by comprehensive scanning electron microscopic and atomic force microscopic imaging. The membrane has shown water vapor permeance up to 9089 GPU with water vapor to nitrogen selectivity up to 3870. The membrane can reduce the relative humidity from 80% to 41% proving one of the competitive materials for membrane dehumidification.
    Citation
    Upadhyaya, L., Gebreyohannes, A. Y., Akhtar, F. H., Falca, G., Musteata, V., Mahalingam, D. K., … Nunes, S. P. (2020). NEXARTM-coated hollow fibers for air dehumidification. Journal of Membrane Science, 118450. doi:10.1016/j.memsci.2020.118450
    Sponsors
    This work was sponsored by King Abdullah University of Science and Technology (KAUST), grants REP/1/3988-06-01 and REP/1/3988-09-01. The authors thank Prof. Klaus-Viktor Peinemann, Dr. Jiangtao Li, Prof. William Worek, Prof. Omar Abdel Aziz and Dr. Rory Jordan for valuable discussion in the frame of the KAUST Cooling Initiative.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2020.118450
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0376738820310279
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2020.118450
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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