Wet wastes

Cattle, pigs and poultry all produce slurries that can be used to produce biogas. The slurries can be fermented in an anaerobic digester to produce a gas that is mainly methane and carbon dioxide. The gas can be used in gas engines to generate electricity or in boilers to provide process heat or space heating.  Some 40-60% of the organic matter present in the slurry is converted into biogas.  After maturation, the remainder provides a stabilized residue that can be used as a soil conditioner.