首页>
外国专利>
Method for producing ethanol from cellulosic or lignocellulosic biomass including the recirculation of an ethylic wine obtained by fermentation of pentoses
Method for producing ethanol from cellulosic or lignocellulosic biomass including the recirculation of an ethylic wine obtained by fermentation of pentoses
展开▼
机译:由纤维素或木质纤维素生物质生产乙醇的方法,包括再循环戊糖发酵制得的乙基葡萄酒
展开▼
页面导航
摘要
著录项
相似文献
摘要
Embodiments provided here relate to second generation processes for the production of alcohols or solvents, wherein the lignocellulosic or cellulosic biomass undergoes a pre-treatment before being converted into ethanol after an enzymatic hydrolysis and fermentation. The glucidic polymers of the pre-treated plant material are hydrolysed by cellulases. The alcoholigenic microorganisms used for the ethanolic fermentation principally use hexoses, for example, glucose and mannose. The alcohols of the liquor, with or without separation of the suspended material are extracted by distillation. The stillage, containing pentoses which have not been used, are fermented into an ex-pentose ethanolic liquor and at least a portion of the liquor is recycled upstream of the enzymatic hydrolysis. The enzymatic hydrolysis and the ethanolic fermentation are thus carried out separately or simultaneously in the presence of a portion of the ethanolic liquor, which mixture does not interfere with the performance of the enzymes and microorganisms.
展开▼