Abstract
In municipalities and rural areas, biogas is a growing form of energy production and is also a feasible waste management option. Biogas manufacturing, in terms of environmental life cycle assessments, appears to have a remarkable opportunity to mix fertilizer recovery with energy generation utilizing different underused methods including urban biowastes or manure. Biogas production life cycle assessments suggest benefits such as CO2 reductions and chemical fertilizer replacement. Established biogas plants have specific biogas processing activities and life-cycle effects are affected by regulations, environmental conditions and biogas production objectives. This chapter describes and examines important biogas problems.