Selective production of hemicellulose-derived carbohydrates from wheat straw using dilute HCl or FeCl3 solutions under mild conditions. X-ray and thermo-gravimetric analysis of the solid residues

G. Marcotullio, Elsa Anisa Krisanti, J. Giuntoli, W. de Jong

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

The present work explores the combined production of hemicellulose-derived carbohydrates and an upgraded solid residue from wheat straw using a dilute-acid pretreatment at mild temperature. Dilute aqueous HCl solutions were studied at temperatures of 100 and 120°C, and they were compared to dilute FeCl3 under the same conditions. Comparable yields of soluble sugars and acetic acid were obtained, affording an almost complete removal of pentoses when using 200mM aqueous solutions at 120°C. The solid residues of pretreatment were characterized showing a preserved crystallinity of the cellulose, and a almost complete removal of ash forming matter other than Si. Results showed upgraded characteristic of the residues for thermal conversion applications compared to the untreated wheat straw.

Original languageEnglish
Pages (from-to)5917-5923
Number of pages7
JournalBioresource Technology
Volume102
Issue number10
DOIs
Publication statusPublished - 1 May 2011

Keywords

  • Dilute-acid
  • Hemicellulose
  • Pretreatment
  • TGA
  • Wheat straw

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