University of Oulu

Farrokh, N. T., Suopajärvi, H., Sulasalmi, P., & Fabritius, T. (2019). A thermogravimetric analysis of lignin char combustion. Energy Procedia, 158, 1241–1248.

A thermogravimetric analysis of lignin char combustion

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Author: Toloue Farrokh, Najibeh1; Suopajärvi, Hannu1; Sulasalmi, Petri1;
Organizations: 1Process Metallurgy Research Unit, University of Oulu, Oulu, FI-90014, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Elsevier, 2019
Publish Date: 2019-09-18


Understanding the combustion behavior is the basic requirement for a new resource to be used as an alternative fuel for the industrial design of the future plants. In this article, thermogravimetric analysis (TGA) of lignin char combustion in different heating rates (5, 10 and 15 °C/min) was investigated. Extracted combustion indices showed increased weight loss rate, peak temperature and burnout temperature but no change in ignition temperature for all samples when the heating rate increased. Lignin chars containing higher volatile material illustrated higher combustibility through the low ignition and burnout temperatures. Kinetic parameters of lignin combustion were also obtained by the Coat-Redfern method in the first-order kinetic model. High combustibility of high volatile sample (L300: vol%=41) was also confirmed by its low activation energy which was 46.68 compared to 150.34 for L500 (vol%=18) and 174.37 kJ/mol for L650 (vol%=5.1). The pre-exponential factor was also measured to be 2.61E-01, 8.15E+06 and 1.21E+08 min-1for L300, L500 and L650 respectively.

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Series: Energy procedia
ISSN: 1876-6102
ISSN-E: 1876-6102
ISSN-L: 1876-6102
Volume: 158
Pages: 1241 - 1248
DOI: 10.1016/j.egypro.2019.01.413
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This research was conducted as a part of the RENEPRO project (20200224) funded by Interreg Nord and FORMET (Dnro 7182/31/2016) funded by Tekes (the Finnish Funding Agency for Innovation).
Copyright information: © 2019 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (