• Login
    View Item 
    •   Home
    • Theses & Dissertations
    • 2017 - Mines Theses & Dissertations
    • View Item
    •   Home
    • Theses & Dissertations
    • 2017 - Mines Theses & Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Mines RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    Login

    Mines Links

    Arthur Lakes LibraryColorado School of Mines

    Statistics

    Display Statistics

    Desalination of produced water with electrodialysis: ion exchange membrane fouling, system performance, and fate of organic constituents

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Yoshino_mines_0052N_11274.pdf
    Size:
    3.305Mb
    Format:
    PDF
    Download
    Author
    Yoshino, Amanda S.
    Advisor
    Cath, Tzahi Y.
    Date issued
    2017
    Keywords
    electrodialysis
    organic constituents
    membrane
    desalination
    
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/11124/171018
    Abstract
    Treatment of oil and gas (O&G) wastewater is a growing practice that increases water resources available for beneficial reuse. Electrodialysis (ED) is an established desalination process with the potential to remove ions from saline produced water (PW), a byproduct of O&G production. However, the current ED literature lacks studies that investigate the fate of organic contaminants during ED treatment using real PW. This work examines ion exchange membrane (IEM) fouling, system performance, and the transport of organic constituents through IEMs during ED treatment of real PW. A bench-scale ED apparatus was operated in batch mode at constant voltage to desalinate pre-treated PW using two types of IEMs. Pretreatment methods included combinations of biologically active filtration, ultrafiltration, and microfiltration with the intention of progressively increasing IEM exposure to organic matter. Impacts of membrane selection were investigated through measuring stack resistance, current utilization, and loss of water from the diluate due to electro-osmosis. Pristine and fouled IEMs were characterized using environmental scanning electron microscopy (ESEM) and ion exchange capacity measurements. Fouling layers were not observed using ESEM, though both IEM types experienced decreases in ion exchange capacity. Neosepta IEMs retained a larger proportion of organic matter in the diluate and demonstrated a lower rate of electro-osmosis compared to GE IEMs. Salinity removal was not affected by initial TOC loading in the feed. The mechanism for TOC transport using Neosepta IEMs may be convection, while diffusion is likely the driving force for TOC transport through the GE IEMs. A mass balance of TOC shows that some organic matter was unaccounted for—because excessive membrane fouling was not immediately apparent, this may be evidence that organic matter undergoes oxidation at the anode during ED treatment.
    Rights
    Copyright of the original work is retained by the author.
    Collections
    2017 - Mines Theses & Dissertations

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated 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.

    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.