A re-appraisal on intensification of biogas production

Biogas is said to be a clean and renewable form of energy. It can replace fossil fuel, thereby eliminating environmental concerns caused by them. Due to several constraints in the process of anaerobic digestion, the potential of this technology is not fully utilized. This paper reviews various techniques like co-digestion, pre-treatments, use of additives, variation in control parameters etc, which could be used to intensify the production of biogas.