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Anaerobic Digesters

Turn livestock waste into a clean, renewable source of electricity for your farm!

What are the benefits of an anaerobic digester?

  • The digested product has minimal odor.
  • Excess heat can be used for process heating or refrigeration applications, or building heat.
  • A portion of the manure may be recycled and marketed for fertilizer. Anaerobic Digesters
  • Improved control of flies and potential disease-carrying organisms.
  • Weed seed control.
  • A source of revenue.

Learn how Alliant Energy uses digester technology

What is an anaerobic digester?

An anaerobic digester is a container that holds manure (animal, crop or other biological products) at a given operating temperature for a period of time long enough to allow a steady-state growth of bacteria producing methane and carbon dioxide.

Biogas produced by a digester can be used as fuel for an engine to power an electric generator. Excess heat produced by the engine can be used for other farm processes, including heating water for sanitation and cooling milk.

Residuals of the digestion process are untreated wastewater mixed with effluent.


How does a digester work?

The manure is stored in a 124-foot-long sealed concrete tanks and heated to 98 degrees Fahrenheit.


How does an anaerobic digester work

The methane and carbon dioxide released from the heating process is fed through the connected piping to 150 horsepower, 100 kilowatt generator and a 30 kilowatt microturbine to create the electricity.