Water sorption in pretreated grasses as a predictor of enzymatic hydrolysis yields

Daniel L. Williams, Jacob D. Crowe, Rebecca G. Ong, David B. Hodge

Research output: Research - peer-reviewArticle

  • 1 Citations

Abstract

This work investigated the impact of two alkaline pretreatments, ammonia fiber expansion (AFEX) and alkaline hydrogen peroxide (AHP) delignification performed over a range of conditions on the properties of corn stover and switchgrass. Changes in feedstock properties resulting from pretreatment were subsequently compared to enzymatic hydrolysis yields to examine the relationship between enzymatic hydrolysis and cell wall properties. The pretreatments function to increase enzymatic hydrolysis yields through different mechanisms; AFEX pretreatment through lignin relocalization and some xylan solubilization and AHP primarily through lignin solubilization. An important outcome of this work demonstrated that while changes in lignin content in AHP-delignified biomass could be clearly correlated to improved response to hydrolysis, compositional changes alone in AFEX-pretreated biomass could not explain differences in hydrolysis yields. We determined the water retention value, which characterizes the association of water with the cell wall of the pretreated biomass, can be used to predict hydrolysis yields for all pretreated biomass within this study.

LanguageEnglish (US)
Pages242-249
Number of pages8
JournalBioresource Technology
Volume245
DOIs
StatePublished - Dec 1 2017

Profile

Enzymatic hydrolysis
Sorption
Biomass
Water
hydrolysis
sorption
grass
water
Lignin
Ammonia
Hydrogen Peroxide
Hydrolysis
Fibers
Hydrogen peroxide
biomass
Cells
hydrogen peroxide
lignin
ammonia
fibre

Keywords

  • Biorefinery
  • Corn stover
  • Plant cell walls
  • Pretreatment
  • Switchgrass
  • Water retention value

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Water sorption in pretreated grasses as a predictor of enzymatic hydrolysis yields. / Williams, Daniel L.; Crowe, Jacob D.; Ong, Rebecca G.; Hodge, David B.

In: Bioresource Technology, Vol. 245, 01.12.2017, p. 242-249.

Research output: Research - peer-reviewArticle

Williams, Daniel L. ; Crowe, Jacob D. ; Ong, Rebecca G. ; Hodge, David B./ Water sorption in pretreated grasses as a predictor of enzymatic hydrolysis yields. In: Bioresource Technology. 2017 ; Vol. 245. pp. 242-249
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