Due to the limits of grid infrastructure in certain regions and problems relating to storage and distribution systems for CBG, interest in technologies which convert bio methane to even higher energy density and more feasible trans portability has increased. The option of converting bio methane to liquid bio fuels would facilitate the supply of bio fuels to geographically broader and larger markets. Furthermore, the potential for blending with liquid fossil fuels would be very useful. Today there are different routes for exploiting bio gas energy as liquid bio fuel. Liquefied bio gas (LBG) is a form of upgraded bio gas that has
been cooled and liquefied at temperatures around − 161 °C under at- atmospheric pressure by cryogenic technology. LBG is three times more space-efficient than CBG (stored at 200 bar), while the fuel is in the gas phase when it reaches the engine [3].