Recent Developments in Biogas Manufacture and Biogas Utilization: A Review

The various developments in the areas of biogas manufacture and utilization have been surveyed. This includes alternate / multiple substrates that could be economically employed for biogas production, biogas enrichment (carbon dioxide removal), biochemical desulfurization of biogas, utilization of enriched, desulfurized biogas as automobile fuel (in place of CNG, LNG), for the production of syngas and a host of chemicals (including nitrogenous fertilizers) therefrom, production of phosphatic biofertiliser from ADS (anaerobic digester sludge) and synthesis of liquid fuels (mainly, motor gasoline) using Fischer – Tropsch process. The technical details and economic viability of each process have also been analyzed and highlighted.