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Digestion of manure is, on paper, a fairly simple process. Similar to how a cow digests food, digesters further break down manure, capture methane, purify the gas and then convert it to pipeline-grade renewable natural gas (RNG).
Climate change is a global problem. While world leaders and scientists meet to find solutions, U.S. dairy producers are well-poised to play a part in these efforts.
Renewable natural gas (RNG) production from dairy manure is an opportunity for farms to obtain an additional income while also participating in the reduction of greenhouse gases (GHG), moving the dairy farm toward sustainability.
Penn State University held its first Digester Day at the Snider Agriculture Arena on July 21, 2021. The event was put together by Daniel Ciolkosz and Siobhan Fathel of Penn State Extension, who wanted to provide a place for people interested in anaerobic digestion to connect.
Digesters are gaining popularity among dairy farms for several reasons. Not only do digesters reduce odor of manure and leave less of a residue, but they also help the condition of the soil.
As dairy farmers look for ways to diversify and add value, many are seeing the benefits of using manure as a revenue source. In its various forms, manure processed in an anaerobic digester can be used on the farm or sold. While it has its unique challenges, it can serve as livestock bedding or be used to produce electricity and natural gas.
Public policy is increasingly evolving to reduce or divert waste from limited landfill space. One way to accomplish this is by reducing the many tons of organic waste such as food processing waste, food scraps, and spoiled fruits and vegetables that are landfilled annually.
Manure is a fact of life on the dairy farm. Sooner or later, every dairy is confronted with added costs associated with managing and disposing of manure.
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