A biochemical process by which organic matter is decomposed by bacteria in the absence of oxygen, producing methane and other byproducts. The complete mixture of this gas is called biogas.
A combustible gas derived from decomposing biological waste. Biogas normally consists of 50 to 60 percent methane. Methane gas is an odorless, colorless, flammable gas with the formula CH4 that is the primary constituent of natural gas. The remaining portion of the gas is made up of primarily carbon dioxide and with trace amounts of hydrogen sulfide and nitrogen gas.
Dairy, beef, poultry, and swine manure have all been used for AD. For Minnesota, Dairy manure has a high potential for AD because the ratio of liquids:solids is favorable to producing biogas efficiently from AD.
David.Weinand@state.mn.us ~ 651-201-6646
Ag Marketing & Development Division