Topochemical Understanding of Lignin Distribution During Hydrothermal Flowthrough Pretreatment

Jung, Seokwon; Trajano, Heather L.; Yoo, Chang Geun; Foston, Marcus B.; Hu, Fan; Tolbert, Allison K.; Wyman, Charles E.; Ragauskas, Arthur J.

doi:10.1002/slct.201801837

Title: Topochemical Understanding of Lignin Distribution During Hydrothermal Flowthrough Pretreatment

Journal Article · 27 August 2018 · Chemistry Select

DOI: https://doi.org/10.1002/slct.201801837 · OSTI ID:1468139

Jung, Seokwon ^[1]; Trajano, Heather L. ^[2]; Yoo, Chang Geun ^[3]; Foston, Marcus B. ^[4]; Hu, Fan ^[1]; Tolbert, Allison K. ^[1]; Wyman, Charles E. ^[5];

^[6]

Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation; Univ. of California, Riverside, CA (United States). Dept. of Chemical & Environmental Engineering. Center for Environmental Research and Technology; Univ. of British Columbia, Vancouver, BC (Canada). Dept. of Chemical and Biological Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation. UT-ORNL Joint Inst. for Biological Science
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation; Washington Univ., St. Louis, MO (United States). Dept. of Energy, Environmental & Chemical Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation; Univ. of California, Riverside, CA (United States). Dept. of Chemical & Environmental Engineering. Center for Environmental Research and Technology
Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Center for Bioenergy Innovation. UT-ORNL Joint Inst. for Biological Science; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemical and Biomolecular Engineering. Dept. of Forestry, Wildlife, Fisheries

Changes in surface properties during biomass pretreatments are important parameters to understand and engineer biological biomass conversion processes. In particular, different influences on the surface of biomass are expected between flowthrough and batch pretreatments. In this paper, for a better understanding of biomass surface changes by hydrothermal flowthrough pretreatment, the mechanism by which the surface of biomass is altered in terms of cellulose and lignin was investigated using time-of-flight secondary ion mass spectrometry (ToF-SIMS) and compared with the bulk chemical composition and the results from scanning electron microscope (SEM). ToF-SIMS analysis results provide semi-quantitative information of cellulose and lignin and support the other observation from SEM and bulk compositional analyses. In brief, more lignin was observed on the surface of biomass at the early stage hydrothermal pretreatment, while the lignin mainly located at the cell corners was reduced by extended pretreatment time. Finally, unlike batch pretreatment, pseudo-lignin formation was not observed on the poplar surface during the flowthrough process.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1468139

Journal Information:: Chemistry Select, Journal Name: Chemistry Select Journal Issue: 32 Vol. 3; ISSN 2365-6549

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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