Microbes used in energy production

Biogas is one of the solution of energy in rural area. The gas which is produced from Bacteria by the anaerobic  action on organic matter called Biogas.

Biogas comprises a mixture of methane as major constituent and along with carbon dioxide,  hydrogen sulphide and hydrogen.

Special bacteria of group Archaebacteria  named methanogen are commonly used in production of Biogas. These bacteria break down  anaerobically cellulosic material available in dung of cattle and release biogas. Gobar gas or Biogas plant are frequently set up in rural area because large amount of dung are available. These bacteria also involved in sewage  treatment.  Methylococcus and methanobacterium are most common methanogen user in biogas production.

Remember 👌👌 Methanogen bacteria are present also in gut or rumen in cattle and rice field.

A biogas plant has a concrete tank which is set up at least 10 to 50 feet deep. Slurry of dung and other cellulosic material is filled in this tank. After introduction of methanogen bacteria, these act on dung anaerobically and release biogas. The floating cover is lift up due anaerobically break down of material which is indications of release of biogas.

Biogas plant also has an outlet by which gas is supplies to near by houses.

Fixed dome type biogas plant and Floating gas holder type biogas plant in which a  floating gas holder is placed, are two type of Biogas plant.

Biogas can be used in gas stove to provide heat. It can be used for cooking street light. This gas burnt without smoke and not cause any air pollution. The remain of slurry is used as good manure because it is rich in nitrogen.

Some algae are used in production of hydrogen as source of fuel in presence of sunlight. This is called Biophotolysis.