Nonenzymatic sugar production from biomass using biomass-derived γ-valerolactone

Jeremy S. Luterbacher, Jacqueline M. Rand, David Martin Alonso, Jeehoon Han, J. Tyler Youngquist, Christos T. Maravelias, Brian F. Pfleger, James A. Dumesic

Research output: Contribution to journalArticlepeer-review

482 Scopus citations

Abstract

Widespread production of biomass-derived fuels and chemicals will require cost-effective processes for breaking down cellulose and hemicellulose into their constituent sugars. Here, we report laboratory-scale production of soluble carbohydrates from corn stover, hardwood, and softwood at high yields (70 to 90%) in a solvent mixture of biomass-derived γ-valerolactone (GVL), water, and dilute acid (0.05 weight percent H2SO4). GVL promotes thermocatalytic saccharification through complete solubilization of the biomass, including the lignin fraction. The carbohydrates can be recovered and concentrated (up to 127 grams per liter) by extraction from GVL into an aqueous phase by addition of NaCl or liquid CO2. This strategy is well suited for catalytic upgrading to furans or fermentative upgrading to ethanol at high titers and near theoretical yield. We estimate through preliminary techno-economic modeling that the overall process could be cost-competitive for ethanol production, with biomass pretreatment followed by enzymatic hydrolysis.

Original languageEnglish (US)
Pages (from-to)277-280
Number of pages4
JournalScience
Volume343
Issue number6168
DOIs
StatePublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General

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