Casey Collins, Duke University energy manager, inspects a boiler at the West Campus Steam Plant. Soon, these boilers will run on swine biogas instead of natural gas.
In late March, a project in eastern North Carolina revealed the potential to turn every hog farm in the state into a source of renewable natural gas, or what’s known as swine biogas.
Biogas typically refers to methane created by the breakdown of organic matter. It can be made from food scraps, decomposing plants and animal waste. Swine biogas is methane that comes from hog waste.