Physicochemical Characterization of Wheat Straw during a Continuous Pretreatment Process

The changes occurring during the depolymerization of lignocellulosic biomasses are not yet fully understood. Synchrotron micro‐Fourier transform infrared (µ‐FTIR), Raman spectroscopy (RS), X‐ray diffraction (XRD), and X‐ray fluorescence (XRF) were applied for better characterization of wheat straw f...

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Bibliographic Details
Published in:Chemical engineering & technology 2018-07, Vol.41 (7), p.1350-1350
Main Authors: Molina-Guerrero, Carlos Eduardo, Rosa, Guadalupe, Castillo-Michel, Hiram, Sánchez, Arturo, García-Castañeda, Concepción, Hernández-Rayas, Angélica, Valdez-Vazquez, Idania, Suarez-Vázquez, Santiago
Format: Article
Language:English
Subjects:
Aliphatic alcohols
Aliphatic compounds
Continuous extrusion
Continuous fibers
Depolymerization
Ethers
Extrusion
Fluorescence
Fourier transforms
Functional groups
Infrared spectroscopy
Lignocellulose
Lignocellulosic biomass
Pretreatment
Raman spectroscopy
Silica content
Silicon dioxide
Straw
Synchrotron µ‐Fourier transform infrared
Wheat
Wheat straw
X-ray diffraction
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Summary:The changes occurring during the depolymerization of lignocellulosic biomasses are not yet fully understood. Synchrotron micro‐Fourier transform infrared (µ‐FTIR), Raman spectroscopy (RS), X‐ray diffraction (XRD), and X‐ray fluorescence (XRF) were applied for better characterization of wheat straw fibers during a continuous pretreatment process in terms of conditioning (C), extrusion (E), steam explosion (SE), and enzymatic hydrolysis (EH). µ‐FTIR revealed functional groups as phenylpropanoid polymers, ethers, and aliphatic alcohol. RS detected acetoacetate, methyl and phenol groups after SE. The crystallinity index and silica content were also determined. Pretreatment of lignocellulosic biomass is a key stage in biorefinery schemes, but the changes occurring during this stage are not yet completely understood. The structural alterations and functional groups of wheat straw, which was subjected to a sequential pretreatment process involving conditioning, extrusion, and steam explosion, followed by enzymatic hydrolysis, were documented.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201800107