Anaerobic digestion is a process in which microorganisms break down biodegradable materials in the
absence of oxygen. The process is widely used to treat wastewater sludges, industrial and farm wastes
because it provides volume and mass reduction up to 50% from the input material [3]. It is considered a
renewable energy source because the methane-rich biogas produced is suitable for energy production and
can replace fossil fuels. As part of an integrated waste management system, anaerobic digestion reduces
the amount of methane that would be sent into the atmosphere if the waste was just sent to the landfill.