Title:
Improvement of Acid Hydrolysis and Fermentation with Pichia Stipitis of Olive Pruning Biomass by Deacetylation Process
Author(s):
Moya, A.J., Peinado, S., Mateo, S., Sánchez, S.
Document(s):
Paper
Poster
Abstract:
In order to produce bioethanol from olive tree pruning biomass, deacetylation was performed employing NaOH. Optimal conditions were determined using experimental design techniques. The highest acetic acid concentration removed (3.8 g/dm3), obtained by response surface methodology, and experimentally verified, was at optimum pretreatment conditions of temperature 60 ºC, 0.8% NaOH and residence time 60 min. After oxalic acid hydrolysis, the hydrolysates were directly used for ethanol production without further detoxification process. Ethanol yields ranged from 0.19 to 0.45 g/g, reaching the maximum value when pretreatment was carried out at 130 ºC with 100 mM oxalic acid, involving a combined severity factor (CSF) of 1.05. The highest ethanol concentration obtained from pretreated biomass was 6.22 g/dm3 at 150 ºC, using 75 mM of oxalic acid (CSF = 1.53).
Keywords:
ethanol, fermentation, pretreatment, hydrolysis
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Bioethanol and sugars from lignocellulosic biomass
Event:
24th European Biomass Conference and Exhibition
Session:
3BV.3.95
Pages:
1182 - 1186
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-3BV.3.95
Price:
FREE
