| abstract |
The present invention relates to a method for producing bioethanol from biomass. A feature of the present invention is a mixture of a chemical method and a physical method as a pretreatment method of biomass, a feedstock for producing bioethanol, and does not generate various kinds of toxic substances that interfere with fermentation, thus eliminating the need for detoxification. In addition, because it uses low concentration of acid, re-concentration process for acid recycling, which is essential when using high concentration of acid, is unnecessary, and de-lignification process, which is essential for ethanol manufacturing process, is not necessary because it hinders the glycosylation of fiber and is eco-friendly and produced. The unit cost is low and high yields of bioethanol can be obtained through the method of the present invention. |