Title:
Cellulosic Ethanol Production from Tunisian Lif of Date Palm Phoenix Dactylifera L.
Author(s):
Antit, Y., Zaafouri, K., Olivares, I., Handi, M., Sánchez, S.
Document(s):
Paper
Poster
Abstract:
Lif is a byproduct generated by the date palm tree Phoenix dactylifera L. with an annual production of around 30460t/year. As this material is not exploited thermochemically and biochemically, it could be a good feedstock for bioenergy recovery. Therefore, to reach this purpose it is necessary to hydrolyze enzymatically the hydrotreated lif fibers (young and old) at 220°C using a combination of two enzymes. The optimization of enzymatic saccharification in young lif (33.33 FPU of cellulases and 10 FPU of ß-glucosidase /6.8% of initial substrate (w/w)) and in old lif (36.6 FPU of cellulases and 10 FPU of ß-glucosidase /7.2% of initial substrate (w/w)) led to the maximum yield of 2G sugars that would be then fermented to produce cellulosic ethanol using the yeast Pachysolen tannophilus. Following these conditions, during fermentation stage of hydrolyzates by P. tannophilus yeast, the maximum instantaneous yields (YE/G) were 38.49 and 41.06 g ethanol/100 g D-glucose for young and old lifs, respectively.
Keywords:
bioethanol, fermentation, sugar, Pachysolen tannophilus, enzymatic saccharification
Topic:
Biomass Conversion Technologies for Fuels, Chemicals and Materials
Subtopic:
Bio-alcohols from lignocellulosic biomass and pretreatment
Event:
26th European Biomass Conference and Exhibition
Session:
3DV.4.26
Pages:
1198 - 1201
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-3DV.4.26
Price:
FREE
