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Energy Independence: Cow Dung Shall Set Us Free!!

Old 03-03-06, 02:01 PM
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Energy Independence: Cow Dung Shall Set Us Free!!

Probably not. 1.4 mL of gasoline weighs about 1 g, so 1 g gasoline/ 100 grams cow crap is pretty low yield. I'm guessing a much higher conversion (20%?) to methan is possible.

http://www.foxnews.com/story/0,2933,186739,00.html
TOKYO Scientists in energy-poor Japan said Friday they have found a new source of gasoline cattle dung.

Sakae Shibusawa, an agriculture engineering professor at the Tokyo University of Agriculture and Technology, said his team has successfully extracted 1.4 milliliters (0.042 ounces) of gasoline from every 100 grams (3.5 ounces) of cow dung by applying high pressure and heat.

"The new technology will be a boon for livestock breeders" to reduce the burden of disposing of large amounts of waste, Shibusawa said.

About 500,000 metric tons (551,155 U.S. tons) of cattle dung are produced each year in Japan, he said.

Gasoline extracted from cow dung is unheard of, said Tomiaki Tamura, an official of the Natural Resources and Energy Agency. Japan relies almost totally on imports for its oil and gasoline needs.

The team, helped by staff from the National Institute of Advanced Industrial Science and Technology near Tokyo, produced gasoline by adding several unspecified metal catalysts to the dung inside a container and applying pressure equivalent to 30 atmospheres and heat of up to 300 degrees Celsius (572 Fahrenheit), Shibusawa said. Details of the catalysts could not be disclosed, he added.
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Old 03-03-06, 02:10 PM
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India has been using cow dung for fuel for thousands of years. There is also a process to convert cow dung to methane that is done in many villages there.
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Old 03-03-06, 02:11 PM
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Yay!!!!!!!!!!!!!!!!!!!!!!!!!!! I can eat more beef now. Beef prices are expensive out here.
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Old 03-03-06, 02:36 PM
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Originally Posted by bhk
India has been using cow dung for fuel for thousands of years. There is also a process to convert cow dung to methane that is done in many villages there.
A lot of animal feed lots have put in methane digesters. More for pollution control than energy, but they typically use the biogas for process heat in other operations or run a generator for a lot of their power needs.

I did some research, my 20% efficient conversion to methane (by weight) was a little high. 14% is more like it, but much better than 1% gasoline. The residue is high nitrogen low smell fertilizer, much better than spreading raw manure.
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Old 03-03-06, 07:38 PM
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not shit, energy
http://www.birdshit.org/uploaded_ima...ter-702142.jpg
linked because it's kind of big
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