• 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

    High-rate microbial electrosynthesis using a zero-gap flow cell and vapor-fed anode design

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    1-s2.0-S0043135422005504-main.pdf
    Size:
    1.269Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Embargo End Date:
    2024-05-13
    Download
    Thumbnail
    Name:
    1-s2.0-S0043135422005504-mmc1.docx
    Size:
    3.408Mb
    Format:
    Microsoft Word 2007
    Description:
    Supplementary material
    Embargo End Date:
    2024-05-13
    Download
    Thumbnail
    Name:
    1-s2.0-S0043135422005504-ga1_lrg.jpg
    Size:
    132.9Kb
    Format:
    JPEG image
    Description:
    Graphical abstract
    Image viewer
    Download
    Type
    Article
    Authors
    Baek, Gahyun
    Rossi, Ruggero cc
    Saikaly, Pascal cc
    Logan, Bruce cc
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Environmental Biotechnology Research Group
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2022-05-13
    Embargo End Date
    2024-05-13
    Permanent link to this record
    http://hdl.handle.net/10754/677914
    
    Metadata
    Show full item record
    Abstract
    Microbial electrosynthesis (MES) cells use renewable energy to convert carbon dioxide into valuable chemical products such as methane and acetate, but chemical production rates are low and pH changes can adversely impact biocathodes. To overcome these limitations, an MES reactor was designed with a zero-gap electrode configuration with a cation exchange membrane (CEM) to achieve a low internal resistance, and a vapor-fed electrode to minimize pH changes. Liquid catholyte was pumped through a carbon felt cathode inoculated with anaerobic digester sludge, with humidified N2 gas flowing over the abiotic anode (Ti or C with a Pt catalyst) to drive water splitting. The ohmic resistance was 2.4 ± 0.5 mΩ m2, substantially lower than previous bioelectrochemical systems (20–25 mΩ•m2), and the catholyte pH remained near-neutral (6.6–7.2). The MES produced a high methane production rate of 2.9 ± 1.2 L/L-d (748 mmol/m2-d, 17.4 A/m2; Ti/Pt anode) at a relatively low applied voltage of 3.1 V. In addition, acetate was produced at a rate of 940 ± 250 mmol/m2-d with 180 ± 30 mmol/m2-d for propionate. The biocathode microbial community was dominated by the methanogens of the genus Methanobrevibacter, and the acetogen of the genus Clostridium sensu stricto 1. These results demonstrate the utility of this zero-gap cell and vapor-fed anode design for increasing rates of methane and chemical productions in MES.
    Citation
    Baek, G., Rossi, R., Saikaly, P. E., & Logan, B. E. (2022). High-rate microbial electrosynthesis using a zero-gap flow cell and vapor-fed anode design. Water Research, 118597. https://doi.org/10.1016/j.watres.2022.118597
    Sponsors
    Funded by the Stan and Flora Kappe endowment and other funds through The Pennsylvania State University.
    Publisher
    Elsevier BV
    Journal
    Water Research
    DOI
    10.1016/j.watres.2022.118597
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0043135422005504
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.watres.2022.118597
    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 © 2002-2023  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.