In today's world are dealing with the crisis, the energy crisis and environmental problems. Biogas is more important. At present, many countries, including Thai foreign countries, to promote the production of biogas, and sanan, who made a contribution to biological production in the various knowledge."Biogas" is a gas mixture composed of methane gas (CH4) is approximately 60-65% by volume. Carbon dioxide (CO2) is about 34-39%, and 1% other gases such as nitrogen gas for approximately (N2) and hydrogen sulfide (H2S), etc.Biogas resulting from the fermentation of waste by microbes in anaerobic conditions of the waste, including waste from chickens, cows, pigs, or waste from agricultural and industrial waste, such as cassava starch production plant. Palm oil mills and factories, ethanol, etc., which in Thai means there is a lot of these wastes. At present, there are found to release some of the waste dumped into the river. Public canals Cause of environmental problems. Previously there was a treatment by using more air, which requires a lot of energy to waste energy in healing.Thus, biogas production systems, it is useful to help reduce environmental problems. Reduction of waste water discharged into the River, reducing public stink. biological fertilizers used in agriculture. Renewable energy and reduce global warming as well.
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