Co-digestion definition
Co-digestion means adding other organic materials to manure feedstock, such as food waste, food processing byproducts, or other agricultural residues. Most co-digestion materials have high energy contents, and may help to balance and improve biogas production. Adding these materials can also help improve digester economics, especially if the digester owner is able to avoid food waste disposal costs or charge a “tipping fee” for receiving waste material from another facility. For example, cheese processing plants that send organic-material-rich wastewater to a digester can save tens of thousands of dollars a year in wastewater treatment costs. However, as technologies and uses for what were formerly