Utilization of livestock manure as a source of biogas for renewable energy

Research on energy resources other than oil and gas continues to be conducted. Indonesia as an agricultural country has abundant natural resources that can be used as an alternative energy source, namely bioenergy. One type of bioenergy is biogas which is derived from organic waste from plants and livestock manure. In this study, optimization of the utilization of livestock manure as a source of biogas is carried out by creating a household biogas system. The type of reactor in this study is a fixed digester. Livestock manure came from five cattle with the amount of around 15 kg/day of each. The ratio of livestock manure and water is of 1: 1 Optimization is done by functional test and combustion test on the 15^th day. The range of tests is 30 – 40 of pressure. And it reaches an optimum value at a pressure of 40. The temporary gas reservoir made from tires that are connected between the digester tank and the stove is used to maintain the gas supply from the digester tank. Moreover, the flame can burn steadily for up to more than one hour of use. Finally, this biogas system from livestock manure is expected to be used as alternative energy for a rural area.