Anaerobic digestion is a biochemical process in which the organic substances are digested by microorganisms to methane (biogas) and carbon dioxide in the absence of oxygen. This process is spontaneous but the control on large scale requires good knowledge. The search for appropriate models of this entire system of bio gas production with filtration process by providing benefits to society, economy, and environment at the same time make biogas as a sustainable energy resource is covered. The aim of this study is- bio kinetics of anaerobic digestion on several aspects such as microbial activity, substrate degradation and methane production in all economical* aspects. For *this, we developed a system of purifying the biogas by separating the other gases from methane. Purified methane can be used in various fields as domestic and industrial (cooking, electricity, transport and other motive power applications).