Reactivity of cellulose during hydrothermal carbonization of lignocellulosic biomass

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Maurizio Volpe
  • Antonio Messineo
  • Mikko Mäkelä
  • Meredith R. Barr
  • Roberto Volpe
  • Chiara Corrado
  • Luca Fiori

Research units

  • Università degli Studi di Enna “Kore”
  • BEC-INFM
  • Swedish University of Agricultural Sciences
  • Queen Mary University of London
  • University of Palermo

Abstract

Hydrothermal carbonization (HTC) of pure cellulose (CE) and birchwood (BW) samples was carried out at temperatures between 160 and 280 °C, 0.5 h residence time and biomass-to-water ratio 1:5, to investigate the reactivity of cellulose in lignocellulosic biomass. Thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR) showed that the CE samples remained unaltered at temperatures up to 220 °C, but were significantly decomposed at 230 °C producing a thermal recalcitrant aromatic and high energy-dense material. FTIR showed that dehydration and aromatization reactions occurred at temperature equal or higher than 230 °C for the CE samples while a similar increase in aromatization for the BW hydrochars was evident only at temperatures equal or higher than 260 °C. Acid hydrolysis, TGA and FTIR suggested that a higher thermal resistance of naturally occurring cellulose in BW (when compared to CE sample) could be related to a ‘protecting shield’ offered by interlinked lignin in the plant matrix.

Details

Original languageEnglish
Article number106456
JournalFuel Processing Technology
Volume206
Publication statusPublished - Sep 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • Acid hydrolysis, Birchwood, Cellulose reactivity, Hydrothermal carbonization, Solid biofuel

ID: 42840234