Biogas contains elements that are not needed in the combustion, especially water ( H2O) and hydrogen sulfide ( H2S) . In circumstances where the biogas is used as burning material ( stove) elements affect only the second decline in the flame of the stove. However, unlike if the biogas is used as fuel for generating electricity or running a generator, washing or purification of biogas to be very important because the two elements will affect the life of engine components plant. Purification purposes ( biogas purification) for condensate formed can accumulate in the gas line and also can form a corrosive acid solution when in contact with water. In addition to corrosion prevention, biogas purification also avoid the toxicity of H2S ( the maximum threshold of 5 ppm, to prevent sulfur content when burned to SO2 or SO3 with poison stronger than H2S as well as minimizing the formation of highly corrosive H2SO3.

Tool biogas purification ( biogas purifier)   is intended for the effort to raise thermal efficiency of biogas, to be more qualified in its use as fuel in power generation ( generator sets) , substitute the more expensive premium gasoline and a source of energy to run electrical devices such modifications biogas lamps, cookers rice ( rice cooker) biogas and other electronic devices.

Purifiers biogas ( methane purifier 24 150) made of stainless steel tubes, diameter 24 inch ( 30 cm) with a height of 150 cm, has a cylindrical medium ( containing absorbent pellets 25 kg) , has the strength to withstand the pressure of more than 10.5 bar, and a capacity purify the flow of up to 40 m3 / day of biogas digester generating results. This tool serves as a trapper ( absorbers) of carbon dioxide ( CO2) , Hydrogen Sulfide ( H2S) and water ( H2O) to increase the composition of the total content of methane in the biogas. The working principle of this biogas purification tool is the role of absorbent pellets ( absorbers) made from a mixture of various minerals are activated and modified chemical solution, such as the strong base NaOH.

Pellet absorbent on the tube can be replaced ( refill) per every 2 ( two) months or regenerated by the use of certain treatments to be used up to 1 year. Purification of biogas ( methane purifier)   is able to increase the efficiency of calories, increase benefits and improve the quality of the generation of biogas from the biogas reactor or vessel digestion ( digester) with an output of up to 40 m3 of gas per day, and raise or increase the amount of methane composition of between 4% and 20 % compared to the previous, and at the same time as it reduced total CO2, H2O and H2S.