• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Understanding transparent exopolymer particle occurrence and interaction with algae, bacteria, and the fractions of natural organic matter in the Red Sea: implications for seawater desalination

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Dehwah, Abdullah H. A.
    Anderson, Donald M.
    Li, Sheng
    Mallon, Francis
    Batang, Zenon B. cc
    Alshahri, Abdullah cc
    Tsegaye, Seneshaw
    Hegy, Michael
    Missimer, Thomas M.
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Field & Lab Research Support
    Marine Operations
    Water Desalination and Reuse Center (WDRC), Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2020
    Permanent link to this record
    http://hdl.handle.net/10754/670152
    
    Metadata
    Show full item record
    Abstract
    Binding of particulate and dissolved organic matter in the water column by marine gels allows the sinking and cycling of organic matter into the deeper water of the Red Sea and other marine water bodies. A series of four offshore profiles were made at which concentrations of bacteria, algae, particulate transparent exopolymer particles (p-TEP), colloidal transparent exopolymer particles (c-TEP), and the fractions of natural organic matter (NOM), including biopolymers, humic substances, building blocks, low molecular weight (LMW) neutrals, and LMW acids were measured to depths ranging from 90 to 300 m. It was found that a statistically-significant relationship occurs between the concentrations of p-TEP with bacteria and algae, but not with total organic carbon (TOC) in the offshore profiles. Variation in the biopolymer fraction of NOM in relationship to TEP and bacteria suggests that extra-cellular discharges of polysaccharides and proteins from the bacteria and algae are occurring without immediate abiotic assembly into p-TEP. In the water column below the photic zone, TOC, bacteria, and biopolymers show a generally common rate of reduction in concentration, but p-TEP decreases at a diminished rate, showing that it persists in moving organic carbon deeper into the water column despite consumption by bacteria. The data presented herein are the first to link TEP concentrations in the Red Sea with the fractions of NOM as measured using liquid chromatography organic carbon detection (LCOCD) technology. The oceanographic and water quality investigations show the sea-water used for reverse osmosis desalination from the nearshore or offshore would yield nearly equal treatment challenges. Use of deep water intake systems to obtain seawater with reduced p-TEP and bacteria concentrations would not significantly impact treatment if it would be feasible which is not.
    Citation
    Dehwah, A. H. A., Anderson, D. M., Li, S., Mallon, F. L., Batang, Z., Alshahri, A. H., … Missimer, T. M. (2020). Understanding transparent exopolymer particle occurrence and interaction with algae, bacteria, and the fractions of natural organic matter in the Red Sea: implications for seawater desalination. DESALINATION AND WATER TREATMENT, 192, 78–96. doi:10.5004/dwt.2020.25942
    Sponsors
    The offshore sample collection was provided by the King Abdullah University of Science and Technology, Coastal and Marine Resources Core Laboratory. Analytical work was funded by the Water Desalination and Reuse Center, King Abdullah University of Science and Technology. Support for DMA was provided by the National Science Foundation (Grants OCE-0850421 OCE-0430724, OCE-0911031, and OCE-1314642) and National Institutes of Health (NIEHS-1P50-ES021923-01) through the Woods Hole Center for Oceans and Human Health.
    Publisher
    Desalination Publications
    Journal
    DESALINATION AND WATER TREATMENT
    DOI
    10.5004/dwt.2020.25942
    Additional Links
    http://www.deswater.com/DWT_abstracts/vol_192/192_2020_78.pdf
    ae974a485f413a2113503eed53cd6c53
    10.5004/dwt.2020.25942
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.