Jensen, Erik Steen
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences
Abstract
Optimization of 2nd generation bioethanol production from wheat straw requires comprehensive knowledge of plant intake feedstock composition. Near Infrared Spectroscopy is evaluated as a potential method for instantaneous quantification of the salient fermentation wheat straw components: cellulose (glucan), hemicelluloses (xylan, arabinan), and lignin. Aiming at chemometric multivariate calibration, 44 pre-selected samples were subjected to spectroscopy and reference analysis. For glucan and xylan predic: 0.87) were obtained, corresponding to error of prediction levels at 8-9%. Models for arabinan and lignin were marginally less good, and especially for lignin a further expansion of the feasibility dataset was deemed necessary. The results are related to significant influences from sub-sampling/mass reduction errors in the laboratory regimen. A relative high proportion of outliers excluded from the present models (10-20%) may indicate that comminution sample preparation is most likely always needed. Different solutions to these issues are suggested. (C) 2009 Elsevier Ltd. All rights reserved.
Keywords
Wheat straw; 2nd generation bioethanol; Near Infrared Spectroscopy; Sugar analysis; Theory of sampling
Published in
Bioresource Technology
2010, volume: 101, number: 4, pages: 1199-1205
Publisher: ELSEVIER SCI LTD
SLU Authors
UKÄ Subject classification
Bioenergy
Publication identifier
- DOI: https://doi.org/10.1016/j.biortech.2009.09.027
Permanent link to this page (URI)
https://res.slu.se/id/publ/48806