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Urine powered cars?
Key Excerpts from Article on Website of MSNBC
Posted: August 2nd, 2009
http://www.msnbc.msn.com/id/31805166/ns/technology_and_scien...
Urine-powered cars, homes and personal electronic devices could be available in six months with new technology developed by scientists from Ohio University. Using a nickel-based electrode, the scientists can create large amounts of cheap hydrogen from urine that could be burned or used in fuel cells. "One cow can provide enough energy to supply hot water for 19 houses," said Gerardine Botte, a professor at Ohio University developing the technology. "Soldiers in the field could carry their own fuel." Pee power is based on hydrogen, the most common element in the universe but one that has resisted efforts to produce, store, transport and use economically. Storing pure hydrogen gas requires high pressure and low temperature. Chemically binding hydrogen to other elements, like oxygen to create water, makes it easier to store and transport, but releasing the hydrogen when it's needed usually requires financially prohibitive amounts of electricity. By attaching hydrogen to another element, nitrogen, Botte and her colleagues realized that they can store hydrogen without the exotic environmental conditions, and then release it with less electricity, 0.037 Volts instead of the 1.23 Volts needed for water. Stick a special nickel electrode into a pool of urine, apply an electrical current, and hydrogen gas is released. A fuel cell, urine-powered vehicle could theoretically travel 90 miles per gallon. A refrigerator-sized unit could produce one kilowatt of energy for about $5,000, although this price is a rough estimate, says Botte. "The waste products from say a chicken farm could be used to produce the energy needed to run the farm," said John Stickney, a chemist and professor at the University of Georgia.
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