How does a biogas plant work?

Answer 1

"A centralized biogas plant assists surrounding farmers in their disposal of animal manure by digesting it in order to create a homogeneous fertilizer. In addition to the animal manure, the plants also use organic material from slaughterhouse, fishing industry tanneries, breweries, dairies, oil mills, and the drug industry to produce the fertilizer. The mix is normally approximately 80% animal manure and 20% organic material. The farms that provided the animal manure can use the fertilizer or it can be sold to any farm or industry wishing to replace chemical fertilizer with a cheaper alternative. Biogas plants also produce a gas through an anaerobic digestion process. Heating and power plants can use the gas produced to produce to create energy. Generally the raw waste material is transported to the biogas plant for disposal. The waste then undergoes anaerobic digestion."

FROM: BIO-GAS PLANTS AND HOG FARMING IN North Carolina

Answer 2

A biogas plant works by breaking down organic materials like food waste, manure, and crop residues in an oxygen-free environment through a process called anaerobic digestion. Microorganisms then convert these organic materials into biogas, which is mainly composed of methane and carbon dioxide. The biogas can be used as a renewable energy source for heating, electricity generation, or vehicle fuel.