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    Increasing power generation for scaling up single-chamber air cathode microbial fuel cells

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    Type
    Article
    Authors
    Cheng, Shaoan
    Logan, Bruce E.
    KAUST Grant Number
    KUS-I1-003-13
    Date
    2011-03
    Permanent link to this record
    http://hdl.handle.net/10754/598612
    
    Metadata
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    Abstract
    Scaling up microbial fuel cells (MFCs) requires a better understanding the importance of the different factors such as electrode surface area and reactor geometry relative to solution conditions such as conductivity and substrate concentration. It is shown here that the substrate concentration has significant effect on anode but not cathode performance, while the solution conductivity has a significant effect on the cathode but not the anode. The cathode surface area is always important for increasing power. Doubling the cathode size can increase power by 62% with domestic wastewater, but doubling the anode size increases power by 12%. Volumetric power density was shown to be a linear function of cathode specific surface area (ratio of cathode surface area to reactor volume), but the impact of cathode size on power generation depended on the substrate strength (COD) and conductivity. These results demonstrate the cathode specific surface area is the most critical factor for scaling-up MFCs to obtain high power densities. © 2010 Elsevier Ltd.
    Citation
    Cheng S, Logan BE (2011) Increasing power generation for scaling up single-chamber air cathode microbial fuel cells. Bioresource Technology 102: 4468–4473. Available: http://dx.doi.org/10.1016/j.biortech.2010.12.104.
    Sponsors
    This research was supported by funding through the National Science Foundation grants BES-0401885 and CBET-0730359, by King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13), and by Key Research Project of Science and Technology Department of Zhejiang Province of China (2010C31014).
    Publisher
    Elsevier BV
    Journal
    Bioresource Technology
    DOI
    10.1016/j.biortech.2010.12.104
    PubMed ID
    21273062
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.biortech.2010.12.104
    Scopus Count
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