• Login
    View Item 
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • View Item
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • 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 LibguidePlumX LibguideSubmit an Item

    Statistics

    Display statistics

    Hydrogen Production by Geobacter Species and a Mixed Consortium in a Microbial Electrolysis Cell

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Call, D. F.
    Wagner, R. C.
    Logan, B. E.
    KAUST Grant Number
    KUS-I1-003-13
    Date
    2009-10-09
    Online Publication Date
    2009-10-09
    Print Publication Date
    2009-12-15
    Permanent link to this record
    http://hdl.handle.net/10754/598534
    
    Metadata
    Show full item record
    Abstract
    A hydrogen utilizing exoelectrogenic bacterium (Geobacter sulfurreducens) was compared to both a nonhydrogen oxidizer (Geobacter metallireducens) and a mixed consortium in order to compare the hydrogen production rates and hydrogen recoveries of pure and mixed cultures in microbial electrolysis cells (MECs). At an applied voltage of 0.7 V, both G. sulfurreducens and the mixed culture generated similar current densities (ca. 160 A/m3), resulting in hydrogen production rates of ca. 1.9 m3 H2/m 3/day, whereas G. metallireducens exhibited lower current densities and production rates of 110 ± 7 A/m3 and 1.3 ± 0.1 m3 H2/m3/day, respectively. Before methane was detected in the mixed-culture MEC, the mixed consortium achieved the highest overall energy recovery (relative to both electricity and substrate energy inputs) of 82% ± 8% compared to G. sulfurreducens (77% ± 2%) and G. metallireducens (78% ± 5%), due to the higher coulombic efficiency of the mixed consortium. At an applied voltage of 0.4 V, methane production increased in the mixed-culture MEC and, as a result, the hydrogen recovery decreased and the overall energy recovery dropped to 38% ± 16% compared to 80% ± 5% for G. sulfurreducens and 76% ± 0% for G. metallireducens. Internal hydrogen recycling was confirmed since the mixed culture generated a stable current density of 31 ± 0 A/m3 when fed hydrogen gas, whereas G. sulfurreducens exhibited a steady decrease in current production. Community analysis suggested that G. sulfurreducens was predominant in the mixed-culture MEC (72% of clones) despite its relative absence in the mixed-culture inoculum obtained from a microbial fuel cell reactor (2% of clones). These results demonstrate that Geobacter species are capable of obtaining similar hydrogen production rates and energy recoveries as mixed cultures in an MEC and that high coulombic efficiencies in mixed culture MECs can be attributed in part to the recycling of hydrogen into current. Copyright © 2009, American Society for Microbiology. All Rights Reserved.
    Citation
    Call DF, Wagner RC, Logan BE (2009) Hydrogen Production by Geobacter Species and a Mixed Consortium in a Microbial Electrolysis Cell. Applied and Environmental Microbiology 75: 7579–7587. Available: http://dx.doi.org/10.1128/aem.01760-09.
    Sponsors
    We thank D. W. Jones for help with the analytical measurements;M. L. Hazen for assistance with the SEM imaging; and the Penn StateGenomics Core Facility, University Park, PA, for DNA sequencing.This research was funded by the American Society of EngineeringEducation National Defense Science and Engineering Graduate Fellowship,the National Science Foundation Graduate Research FellowshipProgram, a National Water Research Institute Ronald B. LinskyFellowship, and award KUS-I1-003-13 from King Abdullah Universityof Science and Technology.
    Publisher
    American Society for Microbiology
    Journal
    Applied and Environmental Microbiology
    DOI
    10.1128/aem.01760-09
    PubMed ID
    19820150
    ae974a485f413a2113503eed53cd6c53
    10.1128/aem.01760-09
    Scopus Count
    Collections
    Publications Acknowledging KAUST Support

    entitlement

    Related articles

    • Electricity-assisted biological hydrogen production from acetate by Geobacter sulfurreducens.
    • Authors: Geelhoed JS, Stams AJ
    • Issue date: 2011 Jan 15
    • Conjugated oligoelectrolyte represses hydrogen oxidation by Geobacter sulfurreducens in microbial electrolysis cells.
    • Authors: Liu J, Hou H, Chen X, Bazan GC, Kashima H, Logan BE
    • Issue date: 2015 Dec
    • Anode microbial communities produced by changing from microbial fuel cell to microbial electrolysis cell operation using two different wastewaters.
    • Authors: Kiely PD, Cusick R, Call DF, Selembo PA, Regan JM, Logan BE
    • Issue date: 2011 Jan
    • A method for high throughput bioelectrochemical research based on small scale microbial electrolysis cells.
    • Authors: Call DF, Logan BE
    • Issue date: 2011 Jul 15
    • Hydrogen production in a single chamber microbial electrolysis cell lacking a membrane.
    • Authors: Call D, Logan BE
    • Issue date: 2008 May 1
    DSpace software copyright © 2002-2021  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    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.