Wood thermodegradation: experimental analysis and modeling of mass loss kinetics

Wood heat treatment is an attractive alternative to improve decay resistance of low natural durability of wood species. Decay resistance is strongly correlated to thermal degradation of wood cell wall components. Some recent studies proposed the use of wood mass loss during the heat treatment as a v...

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Autores principales:	Pétrissans,A, Younsi,R, Chaouch,M, Gérardin,P, Pétrissans,M
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2014
Materias:	Heat treatment modeling reaction kinetics thermodegradation wood
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000200001
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spelling	oai:scielo:S0718-221X20140002000012014-05-13Wood thermodegradation: experimental analysis and modeling of mass loss kineticsPétrissans,AYounsi,RChaouch,MGérardin,PPétrissans,M Heat treatment modeling reaction kinetics thermodegradation wood Wood heat treatment is an attractive alternative to improve decay resistance of low natural durability of wood species. Decay resistance is strongly correlated to thermal degradation of wood cell wall components. Some recent studies proposed the use of wood mass loss during the heat treatment as a valuable marker to predict final properties of the material (Hakkou et al. 2006, Welzbacher et al. 2007). In this study, heat treatment was carried out in a relatively low temperature (230˚C). Mass loss kinetics was studied using equipment, specially conceived to measure sample’s mass during the thermal treatment. Laboratory experiments were performed for heating rates of 1˚C min-1. Mathematical model for kinetics of pyrolysis process was used and validated. During the pyrolysis of dry wood samples under inert atmosphere, measurements of temperature distribution and dynamic weight loss were performed. Five different wood species Fagus sylvatica (Beech), Populus nigra (Poplar), Fraxinus excelsior (Ash), Pinus sylvestris (Pine) and Abies pectinata (Silver Fir) were investigated. The unsteady-state mathematical model equations were solved numerically using the commercial package Femlab 2.0. A detailed discussion of the computational model and the solution algorithm is given. The validity of different model assumptions was analyzed. Experimental results were compared with those calculated by the model. Acceptable agreement was achieved.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.16 n.2 20142014-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000200001en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Heat treatment modeling reaction kinetics thermodegradation wood
spellingShingle	Heat treatment modeling reaction kinetics thermodegradation wood Pétrissans,A Younsi,R Chaouch,M Gérardin,P Pétrissans,M Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
description	Wood heat treatment is an attractive alternative to improve decay resistance of low natural durability of wood species. Decay resistance is strongly correlated to thermal degradation of wood cell wall components. Some recent studies proposed the use of wood mass loss during the heat treatment as a valuable marker to predict final properties of the material (Hakkou et al. 2006, Welzbacher et al. 2007). In this study, heat treatment was carried out in a relatively low temperature (230˚C). Mass loss kinetics was studied using equipment, specially conceived to measure sample’s mass during the thermal treatment. Laboratory experiments were performed for heating rates of 1˚C min-1. Mathematical model for kinetics of pyrolysis process was used and validated. During the pyrolysis of dry wood samples under inert atmosphere, measurements of temperature distribution and dynamic weight loss were performed. Five different wood species Fagus sylvatica (Beech), Populus nigra (Poplar), Fraxinus excelsior (Ash), Pinus sylvestris (Pine) and Abies pectinata (Silver Fir) were investigated. The unsteady-state mathematical model equations were solved numerically using the commercial package Femlab 2.0. A detailed discussion of the computational model and the solution algorithm is given. The validity of different model assumptions was analyzed. Experimental results were compared with those calculated by the model. Acceptable agreement was achieved.
author	Pétrissans,A Younsi,R Chaouch,M Gérardin,P Pétrissans,M
author_facet	Pétrissans,A Younsi,R Chaouch,M Gérardin,P Pétrissans,M
author_sort	Pétrissans,A
title	Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
title_short	Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
title_full	Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
title_fullStr	Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
title_full_unstemmed	Wood thermodegradation: experimental analysis and modeling of mass loss kinetics
title_sort	wood thermodegradation: experimental analysis and modeling of mass loss kinetics
publisher	Universidad del Bío-Bío
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2014000200001
work_keys_str_mv	AT petrissansa woodthermodegradationexperimentalanalysisandmodelingofmasslosskinetics AT younsir woodthermodegradationexperimentalanalysisandmodelingofmasslosskinetics AT chaouchm woodthermodegradationexperimentalanalysisandmodelingofmasslosskinetics AT gerardinp woodthermodegradationexperimentalanalysisandmodelingofmasslosskinetics AT petrissansm woodthermodegradationexperimentalanalysisandmodelingofmasslosskinetics
_version_	1714202578623922176

Wood thermodegradation: experimental analysis and modeling of mass loss kinetics

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