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Improvement of enzymatic digestibility of wood by a sequence of optimized milling procedures with final vibratory tube mills for the amorphization of cellulose

Improvement of enzymatic digestibility of wood by a sequence of optimized milling procedures with... AbstractA three-stage wood milling process was investigated leading to coarse, fine and amorphization of milled wood (MW) as a pretreatment for enzymatic wood hydrolysis. An eccentric vibratory tube mill (EVTM) and a spring suspended vibratory tube mill (SSVTM) were found to be suitable for wood cellulose amorphization. Both methods gave rise to highly digestible and amorphous wood powders amenable to enzymatic hydrolysis. The SSVTM had superior energy efficiency. The resulting MW afforded a 70% sugar yield via enzymatic hydrolysis and the total energy consumption was around 1.5 kWh kg−1 oven-dried wood (odW) for all three milling stages. In contrast, EVTM consumed 17 kWh kg−1 odW energy. Accordingly, SSVTM has a high potential for preparing wood for enzymatic hydrolysis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Holzforschung: - Cellulose – Hemicelluloses – Lignin – Wood Extractives de Gruyter

Improvement of enzymatic digestibility of wood by a sequence of optimized milling procedures with final vibratory tube mills for the amorphization of cellulose

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Publisher
de Gruyter
Copyright
©2018 Walter de Gruyter GmbH, Berlin/Boston
ISSN
0018-3830
eISSN
1437-434X
DOI
10.1515/hf-2017-0161
Publisher site
See Article on Publisher Site

Abstract

AbstractA three-stage wood milling process was investigated leading to coarse, fine and amorphization of milled wood (MW) as a pretreatment for enzymatic wood hydrolysis. An eccentric vibratory tube mill (EVTM) and a spring suspended vibratory tube mill (SSVTM) were found to be suitable for wood cellulose amorphization. Both methods gave rise to highly digestible and amorphous wood powders amenable to enzymatic hydrolysis. The SSVTM had superior energy efficiency. The resulting MW afforded a 70% sugar yield via enzymatic hydrolysis and the total energy consumption was around 1.5 kWh kg−1 oven-dried wood (odW) for all three milling stages. In contrast, EVTM consumed 17 kWh kg−1 odW energy. Accordingly, SSVTM has a high potential for preparing wood for enzymatic hydrolysis.

Journal

Holzforschung: - Cellulose – Hemicelluloses – Lignin – Wood Extractivesde Gruyter

Published: Jun 27, 2018

References