Title:
Biochemical Conversion of Tunisian Lif of Date Palm Phoenix Dactylifera to Bioethanol Production
Author(s):
Antit, Y., Zaafouri, K., Olivares, M.I., Hamdi, M., Sanchez, S.
Document(s):
Paper
Poster
Abstract:
The date palm is one of the oldest crops grown especially in arid and semi-arid bioclimatic zones of the Arabian Peninsula, North Africa and in the Middle East. The number of date palms in the world has been estimated by 100000 million trees; with 2 603 500 date palm trees in an area of 22 680 ha in Tunisia tree. The global palm date waste production is approximately 2 million t/year. The lif is the by-product of the palm date tree.Thus, it could be considered as an available lignocellulose feedstock. For this reason, the aim of this work was to produce bioethanol 2G as renewable source of energy from both young and old lif of date palm, Phoenix dactylifera L. Therefore, to reach this purpose, the first step was to optimize the thermochemical pretreatment while studying the effect of the two main factors: temperature and acid concentration, in order to have the maximum yield of D-glucose. The second step was to explore enzymatic hydrolysis, and the last one was the fermentation process. This research proves that the most adequate conditions for pretreatment of both wastes date palm are 220°C in hydrothermal conditions (H2SO4 at 0 M). Indeed, these operating conditions allow to obtain reducing sugars concentrations about 2.39±1.09 g/dm3 for young lif and 1.98±0.12g/dm3 for old lif, and D-glucose concentrations about 0.11± 0.13g/dm3 for young fibers and 0.093±0.016 g/dm3 for old fibers. After enzymatic hydrolysis, the hydrolysates containing D-glucose were fermented by Pachysolen tannophilus to ethanol, reaching 3.24±0.81 g/dm3 for young lif and 4.55±1.04 g/dm3 for old lif, respectively.
Keywords:
enzymatic hydrolysis, fermentation, Pachysolen tannophilus, pretreatment, bioethanol 2G, Phoenix dactylifera L., lif of date palm
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Bioethanol and sugars from lignocellulosic biomass
Event:
23rd European Biomass Conference and Exhibition
Session:
3DV.2.54
Pages:
1336 - 1340
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3DV.2.54
Price:
FREE
