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METHOD FOR PRODUCING ETHANOL BY FERMENTATION FROM LIGNOCELLULOSIC BIOMASS

  • US 20110111474A1
  • Filed: 02/10/2009
  • Published: 05/12/2011
  • Est. Priority Date: 03/12/2008
  • Status: Active Grant
First Claim
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1. A method of producing bioethanol by separating lignin from a crushed lignocelluloses biomass and obtaining cellulose and, if required, hemicelluloses and further processing of the cellulose or mixture of cellulose and hemicellulose to obtain sugars and subsequently obtain bioethanol, characterised in that crushed lignocelluloses biomass is treated with an alkanolamine for extracting the lignin therein, the lignin solution is separated, the residue containing cellulose/hemicellulose is converted to sugars without drying, and the sugars are fermented to obtain bioethanol.

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