0
research-article

Contrasting the pyrolysis behaviour of selected biomass and the effect of lignin

[+] Author and Article Information
Zhezi Zhang

The University of Western Australia, Centre for Energy (M473), The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
zhezi.zhang@uwa.edu.au

Mingming Zhu

The University of Western Australia, Centre for Energy (M473), The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
mingming.zhu@uwa.edu.au

Philip Hobson

Queensland University of Technology, Sugar Research and Innovation, Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, Queensland 4001, Australia
p.hobson@qut.edu.au

William Doherty

Queensland University of Technology, Sugar Research and Innovation, Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, Queensland 4001, Australia
w.doherty@qut.edu.au

Dongke Zhang

The University of Western Australia, Centre for Energy (M473), The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
dongke.zhang@uwa.edu.au

1Corresponding author.

ASME doi:10.1115/1.4039321 History: Received August 04, 2017; Revised December 28, 2017

Abstract

This study was aimed at comparing the pyrolysis behaviour of several selected biomass samples, namely, pine wood, poplar wood, wheat straw and sugarcane bagasse, with a particular attention to the effect of lignin. Raw samples were first treated using Soxhlet solvent extraction with a 2:1 (v/v) mixture of toluene/ethanol to remove wax. Lignin was then removed by soaking the dewaxed samples in a 1.0 M sodium chlorite solution at 343K till the solids became white. Fourier transform infrared spectroscopy (FTIR) analysis was applied to characterise the surface functional groups of the samples. The morphology of the samples before and after de-lignification treatment was analysed using scanning electron microscope (SEM). The pyrolysis behaviour of the raw and treated biomass samples was studied using a thermogravimetric analyser operating in nitrogen at a constant heating rate of 10K min-1 from room temperature to the final temperature 823K. The FTIR and SEM results indicated that lignin can be successfully removed from the raw biomass via the chemical treatment used. As expected, the pyrolysis behaviour differed significantly amongst the various raw biomass samples. However, the pyrolysis behaviour of the de-lignified samples showed almost identical thermal behaviour although the temperature associated with the maximum rate of pyrolysis was shifted to a lower temperature regime by ca. 50K. This suggests that the presence of lignin significantly affected the biomass pyrolysis behaviour. Thus, the pyrolysis behaviour of the biomass cannot be predicted simply from the individual components without considering their interactions.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In