• Login
    View Item 
    •   DSpace Home
    • ADU Repository
    • Science
    • Environmental Science
    • View Item
    •   DSpace Home
    • ADU Repository
    • Science
    • Environmental Science
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Nanoporous hollow fiber polyethersulfone membranes for the removal of residual contaminants from treated wastewater effluent: Functional and molecular implications

    Thumbnail
    Date
    2017-12
    Type
    Article
    Author
    Giwa, Adewale
    Chakraborty, Sudip
    Mavukkandy, Musthafa O
    Arafat, Hassan A
    ETAL.
    Metadata
    Show full item record
    Abstract
    Hollow fiber membranes consisting of polyethersulfone (PES) reformed with high proportions of single bondOH, aryl-N and alkyl-F groups in nonsolvent additives were compared for the removal of residual Cr (VI), COD, and bacteria from treated wastewater effluent by studying the underlying functional and molecular interactions during dope preparation and phase separation. These interactions were also studied and compared in the context of dope and membrane characteristics such as dope viscosity, membrane morphology, water contact angle, functionalities in the fabricated membranes, pure water permeability and rejection of residual solute. The membranes were characterized via Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FT-IR) spectroscopy and Raman spectroscopy. For nonsolvent additives with single bondOH group, molecular weights and dope viscosity exhibited more impact on phase separation whereas for those with aryl-N and alkyl-F groups, phase separation was influenced by thermodynamic instability. Functional interactions also influenced the lumen shapes and membrane thickness. The lumens changed from spherical to elliptical-type shapes when aryl-amide and fluoroalkyl groups were added. Additives containing –OH group provided the highest contaminant rejection and the least flux whereas those containing aryl amide and fluoroalkyl groups enhanced the water permeability across the PES-based membranes but reduced the contaminant rejection. The PES membrane modified with single bondOH group was able to reduce residual contaminant concentrations from 14 ppb Cr(VI), 36.9 ppm COD, and 18,300 ppm total bacterial counts (TBC) to 8.3 ppb Cr(VI), 20.3 ppm COD, and 8601 ppm TBC with an intrinsic water permeability of 22.94 LMH/bar.
    URI
    https://dspace.adu.ac.ae/handle/1/3849
    DOI
    https://doi.org/10.1016/j.seppur.2017.07.058
    Citation
    Giwa, A., Chakraborty, S., Mavukkandy, M. O., Arafat, H. A., & Hasan, S. W. (2017). Nanoporous hollow fiber polyethersulfone membranes for the removal of residual contaminants from treated wastewater effluent: Functional and molecular implications. Separation and Purification Technology, 189, 20-31.
    Collections
    • Environmental Science

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV