References of "Crine, Michel"
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See detailThe problem of odours when drying sewage sludges
Léonard, Angélique ULg; Nicolas, Jacques ULg; Romain, Anne-Claude ULg et al

Conference (2008, June)

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See detailCoupled thermo-hygro-mechanical simulation of a convective drying process
Léonard, Angélique ULg; Crine, Michel ULg; Jomaa, Wahbi

Conference (2008, May)

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See detailInfluence of Back Mixing on the Convective Drying of Residual Sludges in a Fixed Bed
Léonard, Angélique ULg; Meneses, Eustedio; Le Trong, Emmanuel et al

in Water Research (2008), 42(10-11), 2671-2677

The influence of a backmixing operation on the convective belt drying of two wastewater sludges was studied. The expansion of the sludge extrudates bed due to increasing additions of dry product was ... [more ▼]

The influence of a backmixing operation on the convective belt drying of two wastewater sludges was studied. The expansion of the sludge extrudates bed due to increasing additions of dry product was quantified by using X-ray tomography. This non-invasive technique was used to determine the bed porosity and the total exchange area available for heat and mass transfers, for increasing levels of backmixing. For a same drying flux, the expansion of the drying bed leads to higher drying rates, allowing a reduction of the total drying time. In this context, rheological properties of the sludges are key properties. [less ▲]

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See detailUse of X-ray tomography for drying-related applications
Léonard, Angélique ULg; Crine, Michel ULg; Stepanek, Frantisek

in Tsotsas, Evangelos; Mujumdar, Arun S. (Eds.) Modern Drying Technology, Vol 2. Experimental Techniques (2008)

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See detailIn situ observation of wall effects in activated carbon filters by X-ray microtomography
Léonard, Angélique ULg; Wullens, Hilda; Blacher, Silvia ULg et al

in Separation & Purification Technology (2008), 64(1), 127-130

X-ray microtomography is a powerful non-invasive visualisation technique which can be advantageously used to get a better understanding or dynamic adsorption processes. In the present work, this technique ... [more ▼]

X-ray microtomography is a powerful non-invasive visualisation technique which can be advantageously used to get a better understanding or dynamic adsorption processes. In the present work, this technique is shown to be able to detect wall effects during the dynamic adsorption of methyl iodide on activated carbon filters. The analysis of transversal cross-sections along the filter height clearly shows the existence of radial concentration profiles. These radial adsorption profiles are directly linked to velocity profiles due to a higher permeability at the wall. Obtaining Such in situ information constitutes a real progress in order to validate simulation models allowing predicting reliable breakthrough times. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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See detailEvolution of mechanical properties and final textural properties of resorcinol-formaldehyde xerogels during ambient air drying
Léonard, Angélique ULg; Blacher, Silvia ULg; Crine, Michel ULg et al

in Journal of Non-Crystalline Solids (2008), 354(10-11), 831-838

Porous carbon xerogels can be obtained by convective drying of resorcinol (R)-formaldehyde (F) hydrogels, followed by pyrolysis. Drying conditions have to be carefully controlled when crack-free monoliths ... [more ▼]

Porous carbon xerogels can be obtained by convective drying of resorcinol (R)-formaldehyde (F) hydrogels, followed by pyrolysis. Drying conditions have to be carefully controlled when crack-free monoliths with well-defined shape and size are required. The knowledge of the mechanical properties of the RF xerogels and their evolution with water content is essential to model their thermo-hygro-mechanical behavior during convective drying and avoid mechanical stresses leading to deformation and cracking of the sample. The shrinkage behavior and the mechanical properties of RF xerogels obtained with R/C ratio ranging from 300 to 1500 were investigated. R/C greatly influences the shrinkage and mechanical properties of the wet gel, on the one hand, and the mechanical and textural properties of the dried gel, on the other hand. The smaller the R/C, the higher the shrinkage, the stiffening, and the viscoelastic character of the xerogels. Water content has an influence on both the stiffness of the gels and the viscoelastic response. Generally, samples lose their mechanical viscous character and become more rigid when they are dried. Finally., mercury porosimetry measurements showed that the gels exhibit a marked lowering of their stiffness upon compression, interpreted as a result of the heterogeneity of the microstructure. (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailApplications de la microtomographie à rayons X en génie des procédés
Léonard, Angélique ULg; Toye, Dominique ULg; Marchot, Pierre ULg et al

Scientific conference (2007, November)

Detailed reference viewed: 32 (8 ULg)
See detailStudy of VOC and odour emissions during the convective drying of urban residual sludges
Léonard, Angélique ULg; Martin, Georges; Nicolas, Jacques ULg et al

Conference (2007, October)

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See detailIntérêt de la microtomographie à rayons X pour la formulation de produits agroalimentaires
Léonard, Angélique ULg; Toye, Dominique ULg; Marchot, Pierre ULg et al

in SFGP (Ed.) Récents progrès en génie des procédés N° 96 2007 : actes du 11° Congrès de la Société Française de Génie des Procédés 9-10-11 Octobre 2007, Saint-Étienne, France (2007, October)

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See detailVisualisation d'effets de paroi dans des lits de charbon actif par microtomographie à rayons X
Léonard, Angélique ULg; Wullens, Hilda; Marchot, Pierre ULg et al

in SFGP (Ed.) Récents progrès en génie des procédés N° 96 2007 : actes du 11° Congrès de la Société Française de Génie des Procédés 9-10-11 Octobre 2007, Saint-Étienne, France (2007, October)

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See detailObservation of wall effects in activated carbon filters by x-ray µCT
Léonard, Angélique ULg; Wullens, Hilda; Blacher, Silvia ULg et al

in Mc Cann, H.; Johansen, G. A. (Eds.) Proceedings of the 5th World Congress on Industrial Process Tomography, Bergen, Norway, September 6-9, 2007 (2007, September)

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See detailValidation of DigiPac Simulations of packed columns using x-ray microtomography
Jia, X.; Xu, C.; Caulkin, R. et al

in Mc Cann, H.; Johansen, G. A. (Eds.) Proceedings of the 5th World Congress on Industrial Process Tomography, Bergen, Norway, September 6-9, 2007 (2007, September)

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See detailCarbon xerogels as catalyst supports
Job, Nathalie ULg; Léonard, Angélique ULg; Lambert, Stéphanie ULg et al

Poster (2007, August)

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See detailWater desorption isotherms of resorcinol-formaldehyde and carbon xerogels
Léonard, Angélique ULg; Escalona, I.; Job, Nathalie ULg et al

Poster (2007, July 15)

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See detailWater desorption isotherms of resorcinol-formaldehyde and carbon xerogels
Léonard, Angélique ULg; Escalona, Ivonne; Job, Nathalie ULg et al

in The American Carbon Society (Ed.) Proceedings of Carbon 2007 (2007, July)

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See detailRe-evaporation of adsorbed (toxic) compounds inside an activated carbon filter
Léonard, Angélique ULg; Blacher, Silvia ULg; Wullens, Hilda et al

in The American Carbon Society (Ed.) Proceedings of Carbon 2007 (2007, July)

Detailed reference viewed: 36 (2 ULg)