The biogas production is done by leaving organic waste in closed digester with the present of various anaerobic
microorganisms. The organic compound will be digested by the microorganisms through catabolism process and
resulting biogas as the side product. The methane content in the biogas can reach 70% volume [7] with high energy
content that can be used as fuel for cooking in the smallest scale and in larger scale for other purpose like power
generation. The nutrition and the organic content in the sludge residue are still high, the biogas digestion produces a
clean, high-grade fuel gas, and the residue can be used as a good fertilizer [8].