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    A microbial fluidized electrode electrolysis cell (MFEEC) for enhanced hydrogen production

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    Type
    Article
    Authors
    Liu, Jia
    Zhang, Fang cc
    He, Weihua cc
    Yang, Wulin
    Feng, Yujie
    Logan, Bruce E.
    KAUST Grant Number
    KUS-I1-003-13
    Date
    2014-12
    Permanent link to this record
    http://hdl.handle.net/10754/597307
    
    Metadata
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    Abstract
    A microbial fluidized electrode electrolysis cell (MFEEC) was used to enhance hydrogen gas production from dissolved organic matter. Flowable granular activated carbon (GAC) particles were used to provide additional surface area for growth of exoelectrogenic bacteria. The use of this exoelectrogenic biofilm on the GAC particles with fluidization produced higher current densities and hydrogen gas recoveries than controls (no recirculation or no GAC), due to intermittent contact of the capacitive particles with the anode. The total cumulative charge of 1688C m-2 with the MFEEC reactor (a recirculation flow rate of 19 mL min-1) was 20% higher than that of the control reactor (no GAC). The highest hydrogen gas yield of 0.82 ± 0.01 mol-H2/mol-acetate (17 mL min-1) was 39% higher than that obtained without recirculation (0.59 ± 0.01 mol-H 2/mol-acetate), and 116% higher than that of the control (no GAC, without recirculation). These results show that flowable GAC particles provide a useful approach for enhancing hydrogen gas production in bioelectrochemical systems. © 2014 Elsevier B.V. All rights reserved.
    Citation
    Liu J, Zhang F, He W, Yang W, Feng Y, et al. (2014) A microbial fluidized electrode electrolysis cell (MFEEC) for enhanced hydrogen production. Journal of Power Sources 271: 530–533. Available: http://dx.doi.org/10.1016/j.jpowsour.2014.08.042.
    Sponsors
    This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2014.08.042
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jpowsour.2014.08.042
    Scopus Count
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