Common processes drive the thermochemical pretreatment of lignocellulosic biomass

Langan, Paul; Petridis, Loukas; O'Neill, Hugh M.; Pingali, Sai Venkatesh; Foston, Marcus; Nishiyama, Yoshiharu; Schulz, Roland; Lindner, Benjamin; Hanson, B. Leif; Harton, Shane; Heller, William T.; Urban, Volker S.; Evans, Barbara R.; Gnanakaran, S.; Ragauskas, Arthur J.; Smith, Jeremy C.; Davison, Brian H.

doi:10.1039/c3gc41962b

Common processes drive the thermochemical pretreatment of lignocellulosic biomass

Journal Article · Tue Oct 29 00:00:00 EDT 2013 · Green Chemistry

DOI:https://doi.org/10.1039/c3gc41962b· OSTI ID:1771870

^[1]; ^[2]; ^[3]; ^[3]; Foston, Marcus ^[4]; Nishiyama, Yoshiharu ^[5]; ^[2]; Lindner, Benjamin ^[2]; Hanson, B. Leif ^[6]; Harton, Shane ^[7]; ^[3]; ^[3]; ^[3]; Gnanakaran, S. ^[8]; ^[9]; Smith, Jeremy C. ^[2]; ^[3]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Toledo, OH (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Georgia Inst. of Technology, Atlanta, GA (United States); Washington Univ., St. Louis, MO (United States)
Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), Grenoble Cedex (France)
Univ. of Toledo, OH (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Pall Corporation, Port Washington, NY (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Georgia Inst. of Technology, Atlanta, GA (United States)

Lignocellulosic biomass, a potentially important renewable organic source of energy and chemical feedstock, resists degradation to glucose in industrial hydrolysis processes and thus requires expensive thermochemical pretreatments. Understanding the mechanism of biomass breakdown during these pretreatments will lead to more efficient use of biomass. By combining multiple probes of structure, sensitive to different length scales, with molecular dynamics simulations, we reveal two fundamental processes responsible for the morphological changes in biomass during steam explosion pretreatment: cellulose dehydration and lignin-hemicellulose phase separation. In conclusion, we further show that the basic driving forces are the same in other leading thermochemical pretreatments, such as dilute acid pretreatment and ammonia fiber expansion.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1771870

Journal Information:: Green Chemistry, Journal Name: Green Chemistry Journal Issue: 1 Vol. 16; ISSN 1463-9262

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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