| 摘要 |
The present invention describes a method for producing alcohols and/or solvents from cellulosic or lignocellulosic biomass, including at least: a) a step of thermochemically pretreating a cellulosic or lignocellulosic substrate; b) optionally, a step of washing the pretreated substrate and adjusting the pH thereof; c) a step of enzymatically hydrolyzing the pretreated substrate; d) a step of ethylically fermenting the hexoses contained in the hydrolysate from step c) to obtain ethanol by means of a microorganism that ferments the hexoses, and obtaining a hexose-based ethylic wine; e) an extraction step; and f) a step of ethylically fermenting the pentoses contained in at least one of the streams obtained in one of the previous steps, by means of a microorganism that ferments the pentoses, and obtaining a pentose-based ethylic wine, wherein at least a portion of the pentose-based ethylic wine is recirculated upstream from at least one of the enzymatic hydrolysis and/or ethylic fermentation steps. |
