Energy Capture from Thermolytic Solutions in Microbial Reverse-Electrodialysis Cells
Type
ArticleAuthors
Cusick, R. D.Kim, Y.
Logan, B. E.
KAUST Grant Number
KUS-I1-003-13Date
2012-03-01Online Publication Date
2012-03-01Print Publication Date
2012-03-23Permanent link to this record
http://hdl.handle.net/10754/598165
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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.Journal
SciencePubMed ID
22383807ae974a485f413a2113503eed53cd6c53
10.1126/science.1219330
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