Bio-gas is an economical, renewable and an eco-friendly fuel. Bio-gas is produced in an anaerobic digester i.e. a Gobar gas plant. Bio-gas in its natural self consists of Moisture, Carbon dioxide, Hydrogen sulfide and Methane gas. Methane has a high calorific value in its pure stage. Due to the presence of impurities Bio-gas becomes a very low calorific value fuel and hence finds a very limited application even though it is cheap and easily available.