Biogas is derived from bio energy. Plants in the growth process, the absorption of solar energy stored in the body. After the death of the plant, under the action of microorganisms, the organic matter is fermented and decomposed to produce a large amount of energy. This energy is converted to light and heat when methane is burned.
In the early twentieth Century, it has been developed and applied as a treatment method for urban wastewater. The use of biogas has a positive effect on the treatment of waste and garbage, so it is a valuable environmental protection technology. The development of biogas is one of the important ways to solve the problem of rural fuel.
The method of artificial biogas production is called anaerobic digestion, which is to isolate the organic matter by using methane bacteria to decompose under the condition of air isolation.
Methane is a mixture of methane, carbon dioxide and nitrogen gas, which has a high calorific value. It can be used for cooking and lighting. 1 cubic meters of methane is equivalent to about 1.2 kg of coal or 0.7 kilograms of gasoline, can be used for driving a 3 ton truck, which is equivalent to about 60 watts to 100 watts of light, 6 hours. After the combustion of methane products are carbon dioxide and water, do not pollute the air, does not harm crops and human health.
