Duke Enters Into Hog Waste Partnership, Office of News & Communications, Duke University, 27 Sept 2010

“Hog waste is more than just an odor problem. The open lagoons currently used to handle  the waste are prolific producers of methane gas, which is 21 times more potent than carbon dioxide, pound-for-pound, as a greenhouse gas. Unlike carbon dioxide, however, methane, or natural gas, is a great fuel.

The $1.08 million system being built at Loyd Ray Farms uses mostly off-the-shelf technology, including a lined and covered anaerobic digester and a lined aeration basin. Methane gas collected from the digester will be used to run a “micro-turbine” to generate 512–639 megawatt-hours of clean energy each year.

Capturing the methane creates carbon offset credits for Duke University and using it to generate electricity creates renewable energy credits for Duke Energy.”

Duke Enters Into Hog Waste Partnership, Office of News & Communications, Duke University, 27 Sept 2010