Sakae Shibusawa, an agriculture engineering professor at the Tokyo University of Agriculture and Technology, and his team claim that they have successully extracted a half ounce of gasoline from every 3.5 ounces of cow dung. They were helped by staff from the National Institute of Advanced Industrial Science and Technology. They did this by applying a 30-atmosphere pressure and temperature of 572 degree Fahrenheit to the cow dung in the presence of unspecified catalysts.
The team hopes to improve the technology further so that it can be used commercially within 5 years.
From Corn Waste To Bio-fuel : An article from: E : the Environmental Magazine [HTML] (Digital)
Methane from Community Wastes (Elsevier Applied Biotechnology Series)