Title:
Integrated Kraft Processing and Enzymatic Hydrolysis of Residual Forest Biomass: Developing a Sugar Platform for the Pulp Industry
Author(s):
Vorobieva, E., Nascimento, A., Faria, T., Gírio, F., Ataíde, J., Fonseca, C., Gaspar, A., Marques, S.
Document(s):
Paper
Abstract:
The present work envisages the implementation of forest-based biorefineries coupled to pulp and paper production, in order to maximize the economic and environmental performance of this industry. By-products and waste streams from wood processing and forest exploitation should thus be valorised. The high polysaccharide content of these lignocellulosic residues makes them attractive to be upgraded through biochemical conversion processes, as a sugar platform for the production of fuels, chemicals and materials. This study, focused on the Portuguese pulp and paper industry, targeted the production of sugars solutions from eucalyptus residues generated in pulp manufacturing – fines (wood shaving rejects), branches and bark – coupled to some fast-growing native forest species – acacia, giant reed, willow and miscanthus. Taking advantage of the pulp and paper industrial know-how and equipment, kraft pulping was applied as an alkaline pretreatment prior to enzymatic hydrolysis.This strategy was very effective for the direct conversion of the lignocellulosic materials tested (except eucalyptus bark) into concentrated sugar solutions (> 100 g/L).Enzymatic hydrolysis of fines kraft pulp achieved 95%-yield of glucan conversion. Theintegrated process provided 504 kg of monosaccharides per metric tonne (dry basis) of eucalyptus fines, while with the remaining materials 371-467 kg of monosaccharides per metric tonne of biomass was achieved.
Keywords:
biorefinery, eucalyptus, forest residues, pretreatment, sugar platform, kraft pulping
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:
3CO.11.5
Pages:
983 - 987
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3CO.11.5
Price:
FREE
