30 Jan '12, 10am

Researchers demonstrate concept desalination battery

Seawater desalination processes require electric or thermal energy to separate saline seawater into two streams, a fresh water stream containing a low concentration of dissolved salts and a concentrated brine stream. A variety of desalination technologies have been developed over the years. Reverse osmosis requires a large electrical energy input, which accounts for 44% of its cost, and it is based on selective membranes, which are prone to fouling and require frequent replacement. Recent research on high-flux membranes based on carbon nanotubes could potentially reduce the energy consumption, while alternative electrical-based desalination technology such as ion concentration polarization in nanodevices can potentially avoid the fouling.

Full article: http://www.greencarcongress.com/2012/01/pasta-20120129.html

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