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    Energy Capture from Thermolytic Solutions in Microbial Reverse-Electrodialysis Cells

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    Type
    Article
    Authors
    Cusick, R. D.
    Kim, Y.
    Logan, B. E.
    KAUST Grant Number
    KUS-I1-003-13
    Date
    2012-03-01
    Online Publication Date
    2012-03-01
    Print Publication Date
    2012-03-23
    Permanent link to this record
    http://hdl.handle.net/10754/598165
    
    Metadata
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    Abstract
    Reverse electrodialysis allows for the capture of energy from salinity gradients between salt and fresh waters, but potential applications are currently limited to coastal areas and the need for a large number of membrane pairs. Using salt solutions that could be continuously regenerated with waste heat (≥40°C) and conventional technologies would allow much wider applications of salinity-gradient power production. We used reverse electrodialysis ion-exchange membrane stacks in microbial reverse- electrodialysis cells to efficiently capture salinity-gradient energy from ammonium bicarbonate salt solutions. The maximum power density using acetate reached 5.6 watts per square meter of cathode surface area, which was five times that produced without the dialysis stack, and 3.0 ± 0.05 watts per square meter with domestic wastewater. Maximum energy recovery with acetate reached 30 ± 0.5%.
    Citation
    Cusick RD, Kim Y, Logan BE (2012) Energy Capture from Thermolytic Solutions in Microbial Reverse-Electrodialysis Cells. Science 335: 1474–1477. Available: http://dx.doi.org/10.1126/science.1219330.
    Sponsors
    This research was supported by award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST). The data are presented in the figures and supporting online material.
    Publisher
    American Association for the Advancement of Science (AAAS)
    Journal
    Science
    DOI
    10.1126/science.1219330
    PubMed ID
    22383807
    ae974a485f413a2113503eed53cd6c53
    10.1126/science.1219330
    Scopus Count
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