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Title: Physiochemical characterization of lignocellulosic biomass dissolution by flowthrough pretreatment

Abstract

In this study, comprehensive understanding of biomass solubilization chemistry in aqueous pretreatment such as water-only and dilute acid flowthrough pretreatment is of fundamental importance to achieve the goal of valorizing biomass to fermentable sugars and lignin for biofuels production. In this study, poplar wood was flowthrough pretreated by water-only or 0.05% (w/w) sulfuric acid at different temperatures (220–270 °C), flow rate (25 mL/min), and reaction times (8–90 min), resulting in significant disruption of the lignocellulosic biomass. Ion chromatography (IC), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) analysis, and solid state cross-polarization/magic angle spinning (CP/MAS) 13C nuclear magnetic resonance (NMR) spectroscopy were applied to characterize the pretreated biomass whole slurries in order to reveal depolymerization as well as solubilization mechanism and identify unique dissolution structural features during these pretreatments. Results showed temperature-dependent cellulose decrystallization in flowthrough pretreatment. Crystalline cellulose was completely disrupted, and mostly converted to amorphous cellulose and oligomers by water-only operation at 270 °C for 10 min and by 0.05 wt % H2SO4 flowthrough pretreatment at 220 °C for 12 min. Flowthrough pretreatment with 0.05% (w/w) H2SO4 led to a greater disruption of structures in pretreated poplar at a lower temperature compared to water-only pretreatment.

Authors:
 [1];  [2];  [3];  [4];  [5]
+ Show Author Affiliations
  1. Washington State Univ., Richland, WA (United States); Suzhou Univ. of Science and Technology, Suzhou (People's Republic of China)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Washington State Univ., Richland, WA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1327716
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Sustainable Chemistry & Engineering
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2168-0485
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 59 BASIC BIOLOGICAL SCIENCES; cellulose; decrystallization; depolymerization; enzymatic hydrolysis; flowthrough pretreatment; hemicellulose; lignin; poplar wood

Citation Formats

Yan, Lishi, Pu, Yunqiao, Bowden, Mark, Ragauskas, Arthur J., and Yang, Bin. Physiochemical characterization of lignocellulosic biomass dissolution by flowthrough pretreatment. United States: N. p., 2015. Web. doi:10.1021/acssuschemeng.5b01021.
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Yan, Lishi, Pu, Yunqiao, Bowden, Mark, Ragauskas, Arthur J., & Yang, Bin. Physiochemical characterization of lignocellulosic biomass dissolution by flowthrough pretreatment. United States. https://doi.org/10.1021/acssuschemeng.5b01021
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Yan, Lishi, Pu, Yunqiao, Bowden, Mark, Ragauskas, Arthur J., and Yang, Bin. Tue . "Physiochemical characterization of lignocellulosic biomass dissolution by flowthrough pretreatment". United States. https://doi.org/10.1021/acssuschemeng.5b01021. https://www.osti.gov/servlets/purl/1327716.
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@article{osti_1327716,
title = {Physiochemical characterization of lignocellulosic biomass dissolution by flowthrough pretreatment},
author = {Yan, Lishi and Pu, Yunqiao and Bowden, Mark and Ragauskas, Arthur J. and Yang, Bin},
abstractNote = {In this study, comprehensive understanding of biomass solubilization chemistry in aqueous pretreatment such as water-only and dilute acid flowthrough pretreatment is of fundamental importance to achieve the goal of valorizing biomass to fermentable sugars and lignin for biofuels production. In this study, poplar wood was flowthrough pretreated by water-only or 0.05% (w/w) sulfuric acid at different temperatures (220–270 °C), flow rate (25 mL/min), and reaction times (8–90 min), resulting in significant disruption of the lignocellulosic biomass. Ion chromatography (IC), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) analysis, and solid state cross-polarization/magic angle spinning (CP/MAS) 13C nuclear magnetic resonance (NMR) spectroscopy were applied to characterize the pretreated biomass whole slurries in order to reveal depolymerization as well as solubilization mechanism and identify unique dissolution structural features during these pretreatments. Results showed temperature-dependent cellulose decrystallization in flowthrough pretreatment. Crystalline cellulose was completely disrupted, and mostly converted to amorphous cellulose and oligomers by water-only operation at 270 °C for 10 min and by 0.05 wt % H2SO4 flowthrough pretreatment at 220 °C for 12 min. Flowthrough pretreatment with 0.05% (w/w) H2SO4 led to a greater disruption of structures in pretreated poplar at a lower temperature compared to water-only pretreatment.},
doi = {10.1021/acssuschemeng.5b01021},
journal = {ACS Sustainable Chemistry & Engineering},
number = 1,
volume = 4,
place = {United States},
year = {Tue Nov 24 00:00:00 EST 2015},
month = {Tue Nov 24 00:00:00 EST 2015}
}
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https://doi.org/10.1021/acssuschemeng.5b01021
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    Works referencing / citing this record:

    Strengths, challenges, and opportunities for hydrothermal pretreatment in lignocellulosic biorefineries
    journal, October 2017

    • Yang, Bin; Tao, Ling; Wyman, Charles E.
    • Biofuels, Bioproducts and Biorefining, Vol. 12, Issue 1
    • DOI: 10.1002/bbb.1825
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