Article (Scientific journals)
Image analysis of X-ray microtomograms of soft materials during convective drying: 3D measurements
Léonard, Angélique; Blacher, Silvia; Marchot, Pierre et al.
2005In Journal of Microscopy, 218 (Pt 3), p. 247-252
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Keywords :
3D image analysis; crack; drying; sludge; X-ray microtomography; texture
Abstract :
[en] Drying dewatered sludge leads to a complex three-dimensional porous structure. Moreover, this operation is dependent on the way the material is processed. In this study, textural changes of sludge extrudates submitted to convective drying are followed by a 3D image analysis of reconstructed X-ray microtomograms. To achieve this goal, two different wastewater sludges collected in wastewater treatment plant after the thickening step and dewatered in the laboratory are used. It is showed that the evolution of the 3D-crack ratio vs. the residual water content evolves following a hyperbolic law. The 3D opening crack size distribution reveals two different types of pore development, i.e. a continuous pore size evolution for one sludge and the sudden appearance of cracks for the other sludge.
Disciplines :
Chemical engineering
Materials science & engineering
Author, co-author :
Léonard, Angélique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires - Département de chimie appliquée
Blacher, Silvia ;  Université de Liège - ULiège > Département de chimie appliquée > Labo de génie chimique
Marchot, Pierre ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques
Pirard, Jean-Paul ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Crine, Michel ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
Language :
English
Title :
Image analysis of X-ray microtomograms of soft materials during convective drying: 3D measurements
Alternative titles :
[fr] Analyse d'images obtenues par rmicrotomographie à rayons X lors du séchage convectif de matériaux déformables : mesures 3D
Publication date :
June 2005
Journal title :
Journal of Microscopy
ISSN :
0022-2720
eISSN :
1365-2818
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
218
Issue :
Pt 3
Pages :
247-252
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 02 February 2009

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