Power plant intake quantification of wheat straw composition for 2nd generation bioethanol optimization - A Near Infrared Spectroscopy (NIRS) feasibility study

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

• Jensen, Erik Steen

  • Department of Biosystems and Technology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Renewable Bioenergy Research


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