Physicochemical Characterization of Wheat Straw during a Continuous Pretreatment Process |
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| Authors: | Carlos Eduardo Molina-Guerrero Guadalupe de la Rosa Hiram Castillo-Michel Arturo Sánchez Concepción García-Castañeda Angélica Hernández-Rayas Idania Valdez-Vazquez Santiago Suarez-Vázquez |
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| Affiliation: | 1. Universidad Autónoma de Chihuahua, Facultad de Ciencias Químicas, Chihuahua, México;2. Universidad de Guanajuato, Depto. Ingenierías Química, Electrónica y Biomédica, División de Ciencias e Ingenierías, Guanajuato, México;3. The University of Texas, UC Center for Environmental Implications of Nanotechnology (UC CEIN), El Paso, TX, USA;4. European Synchrotron Radiation Facility, ID21, BP220, Grenoble, France;5. Unidad de Ingeniería Avanzada, Laboratorio de Futuros en Bioenergía, Centro de Investigación y Estudios Avanzados del IPN, Jalisco, México;6. CONACyT-Universidad de Guanajuato, Guanajuato, México;7. Universidad de Guanajuato, Depto. de Ingeniería Física. División de Ciencias e Ingenierías, Guanajuato, México;8. Universidad Nacional Autónoma de México, Unidad Académica Juriquilla, Instituto de Ingeniería, Querétaro, México;9. Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil, Nuevo León, México |
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| Abstract: | 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. |
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| Keywords: | Lignocellulosic biomass Raman spectroscopy Silica content Synchrotron µ ‐Fourier transform infrared Wheat straw |
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