Title:
Comparative Study of Alcoholic Fermentation of Hydrolysates from Waste of Phoenix Dactylifera L. - Using Pachysolen Tannophilus and Saccharomyces Cerevisiae
Author(s):
Antit, Y., Zaafouri, K., Olivares, I., Hamdi, M., Sánchez, S.
Document(s):
Paper
Poster
Abstract:
Phoenix dactylifera L. is a tree which worldwidegeneratesaround 583200 t/year of by-products. Lif is one of waste date palm tree with an annual production around30460t/year in Tunisia. Young and old lif mixtures (50:50)could be a good lignocellulose feedstock for bioethanol recovery. Crude mixture of lif fibers contains about 20.73% of cellulose and 10.83% of hemicellulose. Thermochemical pretreatment at 220°C and enzymatic hydrolysis process are the key steps to liberate total reducing sugars (34.88 g of total reducing sugars/100 g of dry fibers of lif mixture), using a combination of two commercial enzymes in synergy, following the optimal conditions (35 FPU of cellulases and 10 FPU of ß-glucosidase/7.5% of initial substrate (w/w)). After, liquid hydrolysates were fermented to produce bioethanol using two different yeasts,Pachysolen tannophilus and Saccharomyces cerevisiae. During the fermentation process, the overall yields of ethanolachievedwere 39.70and 37.70g ethanol/100 g of D-glucose, using P. tannophilus and S. cerevisiae, respectively.
Keywords:
bioethanol, enzymatic saccharification, lif mixture, Pachysolen Tannophilus, Saccharomyces Cerevisiae
Topic:
Biomass Conversion Technologies for Energy Carriers, Chemicals and Materials
Subtopic:
Bio-alcohols from lignocellulosic biomass and pretreatment
Event:
27th European Biomass Conference and Exhibition
Session:
3CV.7.19
Pages:
1381 - 1385
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-3CV.7.19
Price:
FREE
