1. Introduction Biogas as flammable gas found from organic waste was firstly known as swamp gas and in long time period with the fluctuation of fossil fuel price, today biogas become one of the potential environmentally friendly renewable
1. IntroductionBiogas as flammable gas found from organic waste was firstly known as swamp gas and in long time period withthe fluctuation of fossil fuel price, today biogas become one of the potential environmentally friendly renewable