Stanford scientists use microbes to make 'clean' methane
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July 24, 2012
[font size=5]Stanford scientists use microbes to make 'clean' methane[/font]
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Most methane comes from natural gas, a fossil fuel. Stanford and Penn State scientists are taking a greener approach using microbes that can convert renewable electricity into carbon-neutral methane.[/font]
By Mark Shwartz
[font size=3]Microbes that convert electricity into methane gas could become an important source of renewable energy, according to scientists from Stanford and Pennsylvania State universities.
Researchers at both campuses are raising colonies of microorganisms, called methanogens, which have the remarkable ability to turn electrical energy into pure methane the key ingredient in natural gas. The scientists' goal is to create large microbial factories that will transform clean electricity from solar, wind or nuclear power into renewable methane fuel and other valuable chemical compounds for industry.
"Most of today's methane is derived from natural gas, a fossil fuel," said Alfred Spormann, a professor of chemical engineering and of civil and environmental engineering at Stanford. "And many important organic molecules used in industry are made from petroleum. Our microbial approach would eliminate the need for using these fossil resources."
While methane itself is a formidable greenhouse gas, 20 times more potent than CO[font size=1]
2[/font], the microbial methane would be safely captured and stored, thus minimizing leakage into the atmosphere, Spormann said.
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