CHEMISTRY AND DELIGNIFICATION KINETICS OF CANADIAN INDUSTRIAL HEMP
- 31 May 2001
- journal article
- Published by Taylor & Francis in Journal of Wood Chemistry and Technology
- Vol. 21 (2), 97-111
- https://doi.org/10.1081/wct-100104221
Abstract
Strategies to diversify the Canadian fibre supply have provided an impetus for investigating a wide variety of alternative fibres including industrial hemp (Cannabis sativa L.) in Canada. The alkaline delignification kinetics of Canadian hemp (bast, core and whole stem fractions), using micro pulping units was investigated. The nature of hemp (macromolecule proportions) was a major contributor to the chemical pulping behaviour shown in the results. The initial lignin and holocellulose content of the bast were 10% and 85%, respectively, and the core lignin and holocellulose contents were 21% and 72%, respectively. The bast fibre had a comparative pulping advantage over the core fibre region due to its chemical constitution. The activation energies for lignin removal from hemp are 41 kJ/mol, 76 kJ/mol and 76 kJ/mol for the bast, core and whole stem respectively. These are considerably lower than the reported values for traditional wood pulp species.Keywords
This publication has 7 references indexed in Scilit:
- Kinetic Theory in the Earth SciencesPublished by Walter de Gruyter GmbH ,1998
- Alkaline Swelling of Hemp Woody Core ChipsJournal of Wood Chemistry and Technology, 1997
- Delignification Kinetics of Soda Pulping of KenafJournal of Wood Chemistry and Technology, 1996
- Combined HPLC Analysis of Organic Acids and Furans Formed During Organosolv Pulping of Fiber HempJournal of Wood Chemistry and Technology, 1995
- Bulk delignification kinetics at selected vertical heights within jack pine plus treesWood Science and Technology, 1995
- Simplified Kinetic Modelling of Alkaline Delignification of Hemp Woody CoreHolzforschung, 1994
- Modelling Organosolv Pulping of HempHolzforschung, 1994