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Bioresour Technol. 2009 Jan;100(1):400-5. doi: 10.1016/j.biortech.2008.06.040. Epub 2008 Aug 9.

Pyrolysis characteristics and kinetics of oak trees using thermogravimetric analyzer and micro-tubing reactor.

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  • 1College of Environment and Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi-do, Republic of Korea.

Abstract

In this work, pyrolysis characteristics were investigated using thermogravimetric analysis (TGA) at heating rates of 5-20 degrees C/min. Most of the materials were decomposed between 330 degrees C and 370 degrees C at each heating rate. The average activation energy was 236.2 kJ/mol when the pyrolytic conversion increased from 5% to 70%. The pyrolysis kinetics of oak trees was also investigated experimentally and mathematically. The experiments were carried out in a tubing reactor at a temperature range of 330-370 degrees C with a reaction time of 2-8 min. A lump model of combined series and parallel reactions for bio-oil and gas formation was proposed. The kinetic parameters were determined by nonlinear least-squares regression from the experimental data. It was found from the reaction kinetic constants that the predominant reaction pathway from the oak trees was to bio-oil formation rather than to gas formation at the investigated temperature range.

PMID:
18693012
[PubMed - indexed for MEDLINE]
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