Oil is a major factor in the country's economy is driven. At present, Thailand is country, the demand for oil in more quantity. As a result, the price of oil. The quantity of crude oil from nature are reduced. Therefore, finding alternative energy is needed urgently. Ethanol is one renewable energy popular high. Lakoet ethanol production process from raw material plant type or fermentation by-product from industry. Many ethanol production using domestic raw materials, such as molasses and tapioca. Ethanol can be used as an alternative fuel, gasoline or diesel. Benefits of using ethanol reduces the import of crude oil from abroad and increase revenues to farmers, however, the production of ethanol is a problem of management of waste from the manufacturing process, such as the Fu-oil. Carbon dioxide and waste water (sewage water blisters), but from the data collected, it was found that these wastes can be useful, for example, sewage gas, methane and acid production Trike. Lae khadai motto, etc. This research has gathered information from the ethanol production process and waste from the production process to make use of in order to promote sustainability in the production process of ethanol and reduce the environmental problems that arise from such waste.
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