The thermal performance of the polysaccharides extracted from hardwood: cellulose and hemicellulose

D.K. Shen, S. Gu*, A.V. Bridgwater

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The pyrolytic behaviour of individual component in biomass needs to be understood to gain insight into the mechanism of biomass pyrolysis. A comparative study on the pyrolysis of cellulose (hexose-based polysaccharides) and hemicallulose (pentose-based polysaccharides) is performed by two sets of experiments including TG analysis and Py-GC-MS/FTIR. The samples of these two polysaccharide components are thermally decomposed in TGA at the heating rate of 5 and 60 K/min to demonstrate the different characteristics of mass loss stage(s) between them. The yield of pyrolytic products is examined by a fluidized-bed fast pyrolysis unit. The experiment confirms that cellulose mainly contributes to bio-oil production (reaching the maximum of 72% at 580 °C), while hemicellulose works as an important precursor for the char production (∼25%). The compounds in the gaseous mixture (CO and CO2) and bio-oil (levoglucosan, furfural, aldehyde, acetone and acetic acid) are further characterized by GC-MS for cellulose and GC-FTIR for hemicellulose, and their formations are investigated thoroughly.

Original languageEnglish
Pages (from-to)39-45
Number of pages7
JournalCarbohydrate Polymers
Volume82
Issue number1
Early online date18 Apr 2010
DOIs
Publication statusPublished - 2 Aug 2010

Bibliographical note

Erratum:
D.K. Shen, S. Gu, A.V. Bridgwater Corrigendum to “The thermal performance of the polysaccharides extracted from hardwood: Cellulose and hemicellulose” [Carbohydr. Polym. 82 (1) (2010) 39–34] Carbohydrate Polymers, Volume 83, Issue 3, 30 January 2011, Page 1415

Keywords

  • Cellulose
  • Char
  • CO
  • Fast pyrolysis
  • Hemicellulose
  • Tar
  • TGA

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