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AgSTAR: Biogas Recovery in the Agriculture Sector

AgSTAR: Biogas Recovery in the Agriculture Sector

AgSTAR promotes the use of biogas recovery systems to reduce methane emissions from livestock waste. In addition to producing biogas, anaerobic digestion systems can also help achieve other social, environmental, agricultural and economic benefits.

Anaerobic Digester Projects in the United States

Click on a project to view details.

Dairy Dairy    Hog Hog    Poultry Poultry    Beef Beef    Mixed Mixed

The colors and sizes of the circles indicate the types and numbers of animals that feed the digester at each project. Click the button (>>) at the top left of the map to show the detailed legend.

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Digestate Use

Renergy’s Emerald BioEnergy FacilityAnaerobic digestion produces two products: energy and fertilizer (digestate). Digestate is the material remaining after the anaerobic digestion of organic materials. Digestate can be separated into liquid and solid components that are land applied as a fertilizer. These products can be used on site reducing material costs or sold to others providing an additional revenue stream.

Ringler Farms energy company, Renergy, currently operates two anaerobic digesters. Their flagship bio-digester located in Central Ohio utilizes livestock manure to create renewable energy and nutrient-dense fertilizer.  Ringler utilizes this natural fertilizer as a soil amendment to improve crop yield. The reuse of the digestate helps the farm’s energy company, Renergy Exit, meet its goals of environmental awareness and sustainable waste management.

See Stories from the Farm for more information.