Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/11279

TitleEvaluation of a hydrothermal process for pretreatment of wheat straw : effect of particle size and process conditions
Author(s)Ruiz, Héctor A.
Ruzene, Denise S.
Silva, Daniel Pereira da
Quintas, Mafalda A. C.
Vicente, A. A.
Teixeira, J. A.
KeywordsHydrothermal process
Particle size
Lignocellulosic materials
Pretreatment
Wheat straw
Issue dateJan-2011
PublisherSociety of Chemical Industry
JournalJournal of Chemical Technology and Biotechnology
Citation"Journal of Chemical Technology and Biotechnology". ISSN 0268-2575. 86:1 (Jan. 2011) 88-94.
Abstract(s)Hydrothermal processes are an eco-friendly processes that provide an interesting alternative for chemical utilization of lignocellulosic materials, in which water and crop residues are the only reagents. In this work the effect of process conditions (size distribution of the wheat straw, temperature and time) was evaluated against production of fermentable products. RESULTS: The use of milled wheat straw fractions as a raw material containing blends of different particle size distribution showed that the latter had an influence on the final sugars in the hydrolysate. Improved values of glucose (21.1%) and xylose yields (49.32%) present in the hydrolysate were obtained with treatment severity factors of 2.77 and 3.36, respectively. Mathematical models were developed aimed at establishing the effect of process conditions on monosaccharide concentration and its degradation in the liquor. CONCLUSION: This work shows that the use of wheat straw blends with various particle sizes has a significant effect on the extraction of fermentable products. The effect of treatment severity, which takes into account both processing time and temperature was also evaluated. These results are of importance for process design.
TypeArticle
URIhttp://hdl.handle.net/1822/11279
DOI10.1002/jctb.2518
ISSN0268-2575
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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