Title:
On Biorefinery of Mediterranean Energy Crops Giant Reed and Cardoon - Rational Ways for Carbohydrate Utilization
Author(s):
Shatalov, A.A.
Document(s):
Paper
Abstract:
The agro¬based lignocellulosics, such as annual crops and perennial herbaceous species (grasses), represent abundant and low¬cost feedstocks for biorefinery schemes. Assuming that carbohydrate fraction accounts for up to 80% of lignocellulosic raw materials, the efficient access and conversion of carbohydrates to value¬added chemical intermediates or final products is a key factor for successful biorefinery commercialization. The biorefinery of two potential Mediterranean energy crops giant reed and cardoon has been studied. Following to pre¬defined fractionation scheme with separate utilization of hemicellulose and cellulose portions, the high quality xylose¬rich substrate was produced from both crops by selective one¬step hydrolytic conversion of hemicelluloses (basically composed of heteroxylan), yielding 18¬22 g of monomeric xylose per 100 g of dry biomass. The residual cellulose was readily saccharificated by enzymes to fermentable sugars for bio¬ethanol production, providing the cellulose¬to¬glucose conversion of 70¬76%. Alternatively, the xylan¬free solid residue was used as a source of cellulosic fibers for chemical pulp production. The high purity dissolving grade pulps with alpha¬cellulose content of 93¬94% were produced using advanced sulfur¬free technologies.
Keywords:
biorefinery, cellulose, cynara cardunculus, hemicellulose, conversion, arundo donax
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Biorefineries
Event:
20th European Biomass Conference and Exhibition
Session:
2CV.1.6
Pages:
1164 - 1168
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-2CV.1.6
Price:
FREE
