The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Using microbial desalination cells to reduce water salinity prior to reverse osmosis
Abstract
A microbial desalination cell (MDC) is a new method to reduce the salinity of one solution while generating electrical power from organic matter and bacteria in another (anode) solution. Substantial reductions in the salinity can require much larger volumes of the anode solution than the saline water, but any reduction of salinity will benefit the energy efficiency of a downstream reverse osmosis (RO) desalination system. We investigated here the use of an MDC as an RO pre-treatment method using a new type of air-cathode MDC containing three equally sized chambers. A single cycle of operation using a 1 g L−1 acetate solution reduced the conductivity of salt water (5 g L−1 NaCl) by 43 ± 6%, and produced a maximum power density of 480 mW m−2 with a coulombic efficiency of 68 ± 11%. A higher concentration of acetate (2 g L−1) reduced solution conductivity by 60 ± 7%, and a higher salt concentration (20 g L−1 NaCl) reduced solution conductivity by 50 ± 7%. The use of membranes with increased ion exchange capacities further decreased the solution conductivity by 63 ± 2% (20 g L−1 NaCl). These results demonstrate substantial (43–67%) desalination of water is possible using equal volumes of anode solution and salt water. These results show that MDC treatment could be used to substantially reduce salt concentrations and thus energy demands for downstream RO processing, while at the same time producing electrical power.
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Cites
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Cited by
Anion-exchange membranes in electrochemical energy systems
Varcoe, J. R., Atanassov, P., Dekel, D. R., Herring, A. M., Hickner, M. A., Kohl, P. A., Kucernak, A. R., Mustain, W. E., Nijmeijer, K., Scott, K., et al. (2014) · Energy Environ. Sci. · doi:10.1039/c4ee01303d · Cited by 2,051
Self-citationSolar assisted sea water desalination: A review
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Choi, J., Dorji, P., Shon, H. K., & Hong, S. (2019) · Desalination · doi:10.1016/j.desal.2018.10.013 · Cited by 367
Chang, H., Li, T., Liu, B., Vidic, R. D., Elimelech, M., & Crittenden, J. C. (2019) · Desalination · doi:10.1016/j.desal.2019.01.001 · Cited by 325
Metadata
- Authors
- Mehanna, M., Saito, T., Yan, J., Hickner, M., Cao, X., Huang, X., & Logan, B. E.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2010
- Volume
- 3
- Issue
- 8
- Pages
- 1114
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2047214993
- Cited by
- 320
- References
- 22
- FWCI
- 17.35
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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