Biogas Manufacture and Biogas Utilization

“

A lot of diversifications and improvements have taken place in the field of biogas manufacture and utilization. Use of multiple substrates is encouraged, since this increases the yield of biogas significantly. Once biogas is produced on large scale, it could be enriched to almost pure methane (biomethane) by an absorption – desorption process which uses aqueous MEA solution as the selective solvent for CO2 absorption. It can also be desulfurized by the cost – effective biochemical process. Thereafter, biomethane could be used as an automobile fuel (as a substitute to CNG, LNG) or for the manufacture of a host of valuable industrial products such as methanol, hydrogen gas and nitrogenous fertilizers through syngas route. It could also be used for the synthesis of liquid fuels (mainly motor gasoline) through Fischer – Tropsch process. The anaerobic digester sludge (ADS) discharged from the biogas digester could be employed for the biochemical production of an efficient phosphatic biofertilizer (PROM). All the processes have been commercially developed and well – tested CAD (software) packages are available for the design and installation of each scheme / process.

”