Title:
Fractionation of Olive Woody Waste (OWW) Obtained after Milling by Hydrothermal Pretreatments - Steam Explosion and Hot Water
Author(s):
Zaafouri, K., Zimbardi, F., Viola, E., Cerone, N., Valerio, V., Romanelli, A.
Document(s):
Paper
Abstract:
The olive woody waste (OWWis a promising feedstock for biorefineries in the Mediterranean region. In order to valorize this lignocellulosic residue, a pretreatment is necessary to fractionate its components and to improve the cellulose enzymatic hydrolyzability. The work target was to compare the efficiency of two physico-chemical pretreatments, viz.: Steam Explosion (SE) and Hot Water/OrganoSolv (OS) towards acid fractionation of OWW and enzymatic digestibility of the cellulosic residue. The SE pretreatment was performed with a batch reactor of 10 L, coupled with a 125 kW boiler. The biphasic Hot Water/OrganoSolv (OS) pretreatment was carried out with a high pressure and temperature batch reactor of a 0.5 l vessel with adjustable internal stirrer and heat control. After SE and Hot Water/OrganoSolv (OS) pretreatments the materials were extracted by water to remove and quantify the soluble hemicellulose as monomers and oligomers as well as the inhibitors; the solid residue was saccharified. The digestibility of cellulose was very good in both cases, OS was slightly more effective in terms of sugars recovery.
Keywords:
waste, pretreatment, second generation, hydrolysis, bio-based economy
Topic:
Biomass Conversion Technologies for Fuels, Chemicals and Materials
Subtopic:
Biorefineries
Event:
26th European Biomass Conference and Exhibition
Session:
3BV.7.17
Pages:
1115 - 1117
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-3BV.7.17
Price:
FREE
