Title:
Presaccharification of Two-Step Pretreated Sugarcane Bagasse
Author(s):
González, E., Mesa, L., Romero, I., Ruiz, E., Castro, E.
Document(s):
Paper
Abstract:
The effect of presaccharification on final ethanol concentration obtained from pretreated sugarcane bagasse is studied. Pretreatment was performed in two steps. The first stage was directed to xylan separation. Two alternatives were analysed: 1) obtaining xylose at 45 g/L concentration for ethanol production, and 2) furfural production. The second pretreatment step was aimed at lignin separation by organosolv process. Presaccharification was studied by means of a fractional factorial 24-1 experimental design, with four independent variables: the time at which the fermentative microorganism is inoculated (6 or 10 h), the type of pretreatment at the first step (xylose or furfural production), the solid concentration (13 or 16% w/v) and the cellulase loading (10 or 30 FPU/g of pretreated solid). The ethanol concentration of the resulting solution was adopted as response. Solid and cellulase loadings were found to be significant variables at the upper level. A higher ethanol concentration of 36.48 g/L was obtained. From these results, it can be concluded that 198 liters of ethanol can be obtained from a dry ton of bagasse.
Keywords:
ethanol, sugar cane bagasse, presaccharification
Topic:
Biological conversion - Fermentation, enzymatic processes
Subtopic:
Process engineering for biological conversion
Event:
18th European Biomass Conference and Exhibition
Session:
OA9.5
Pages:
1405 - 1408
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-OA9.5
Price:
FREE
