In this paper we are discuss H2S efficiency through membrane technique and Activated Carbon (CKC) Performance Improvement with Oxygen. Once the gas is compressed to high methane concentration and high pressure, it can be used as a vehicle fuel or other use. Since the gas mainly contains methane, the calorific value also increases. Before the purification process, the amount of carbon dioxide in the raw biogas was 48.8% which was quite high. The presence of CO2 in biogas reduces the energy value. As the CO2 present in biogas, the CH4 ratio will decrease. This situation leads to poor use of biogas for energy production such as for transport fuel or domestic cooking.