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Hydrothermal pentose to furfural conversion and simultaneous extraction with SC-CO2--kinetics and application to biomass hydrolysates.

Abstract
This work explores hydrothermal d-xylose and hemicellulose to furfural conversion coupled with simultaneous furfural extraction by SC-CO(2) and the underlying reaction pathway. A maximum furfural yield of 68% was attained from d-xylose at 230°C and 12MPa. Additionally missing kinetic data for l-arabinose to furfural conversion was provided, showing close similarity to d-xylose. Furfural yields from straw and brewery waste hydrolysates were significantly lower than those obtained from model compounds, indicating side reactions with other hydrolysate components. Simultaneous furfural extraction by SC-CO(2) significantly increased extraction yield in all cases. The results indicate that furfural reacts with intermediates of pentose dehydration. The proposed processing route can be well integrated into existing lignocellulose biorefinery concepts.
AuthorsKrishan Gairola, Irina Smirnova
JournalBioresource technology (Bioresour Technol) Vol. 123 Pg. 592-8 (Nov 2012) ISSN: 1873-2976 [Electronic] England
PMID22947445 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2012 Elsevier Ltd. All rights reserved.
Chemical References
  • Water
  • Carbon Dioxide
  • Xylose
  • Arabinose
  • Furaldehyde
Topics
  • Arabinose (metabolism)
  • Biomass
  • Carbon Dioxide (chemistry)
  • Furaldehyde (metabolism)
  • Hydrolysis
  • Kinetics
  • Temperature
  • Time Factors
  • Water (chemistry)
  • Xylose (metabolism)

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