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    A hybrid microbial fuel cell membrane bioreactor with a conductive ultrafiltration membrane biocathode for wastewater treatment

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    Type
    Article
    Authors
    Malaeb, Lilian
    Katuri, Krishna
    Logan, Bruce E.
    Maab, Husnul
    Nunes, Suzana Pereira cc
    Saikaly, Pascal cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Biotechnology Research Group
    Environmental Science and Engineering Program
    Nanostructured Polymeric Membrane Lab
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    KAUST Grant Number
    KUS-I1-003-13
    Date
    2013-09-25
    Online Publication Date
    2013-09-25
    Print Publication Date
    2013-10-15
    Permanent link to this record
    http://hdl.handle.net/10754/563042
    
    Metadata
    Show full item record
    Abstract
    A new hybrid, air-biocathode microbial fuel cell-membrane bioreactor (MFC-MBR) system was developed to achieve simultaneous wastewater treatment and ultrafiltration to produce water for direct reclamation. The combined advantages of this system were achieved by using an electrically conductive ultrafiltration membrane as both the cathode and the membrane for wastewater filtration. The MFC-MBR used an air-biocathode, and it was shown to have good performance relative to an otherwise identical cathode containing a platinum catalyst. With 0.1 mm prefiltered domestic wastewater as the feed, the maximum power density was 0.38 W/m2 (6.8 W/m3) with the biocathode, compared to 0.82 W/m2 (14.5 W/m3) using the platinum cathode. The permeate quality from the biocathode reactor was comparable to that of a conventional MBR, with removals of 97% of the soluble chemical oxygen demand, 97% NH3-N, and 91% of total bacteria (based on flow cytometry). The permeate turbidity was <0.1 nephelometric turbidity units. These results show that a biocathode MFC-MBR system can achieve high levels of wastewater treatment with a low energy input due to the lack of a need for wastewater aeration. © 2013 American Chemical Society.
    Sponsors
    This work was supported by SABIC Fellowship (K.K.) and discretionary investigator funds (P.S.), and award KUS-I1-003-13 (B.E.L.) from the King Abdullah University of Science and Technology (KAUST). Dr. Cyril Aubry and Dr. Rachid Sougrat are acknowledged for their assistance with SEM and TEM analysis, respectively.
    Publisher
    American Chemical Society (ACS)
    Journal
    Environmental Science & Technology
    DOI
    10.1021/es4030113
    PubMed ID
    24016059
    ae974a485f413a2113503eed53cd6c53
    10.1021/es4030113
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Physical Science and Engineering (PSE) Division; Water Desalination and Reuse Research Center (WDRC)

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