New type of Battery takes salt out of Seawater
February 11, 2012 12:14 PM Subscribe
Nanoscale electrodes separate salt from seawater.
It uses special electrodes:
"It first draws ions from seawater into a pair of electrodes. As the researchers pass current through the electrodes, electrochemical reactions drive chloride ions into a silver electrode and sodium ions to an electrode made from manganese oxide nanorods. Next, the researchers remove the desalinated water and release the trapped ions into a separate stream of waste seawater by reversing the direction of the electrical current."
And at this point the salt in the water is only reduced by about 50%.
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