References of "Léonard, Angélique"
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See detailImportance of rheological properties when drying sludge in a fixed bed
Léonard, Angélique ULg; Blandin, Gaëtan; Crine, Michel ULg

in 4th Inter-American Drying Conference: Challenges for efficient drying processes (2009)

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See detailPhase distribution measurements in metallic foam packing using X-ray radiography and micro-tomography
Calvo, Sébastien ULg; Beugre, Djomice Antoine ULg; Crine, Michel ULg et al

in Chemical Engineering & Processing (2009), 48(5), 1030-1039

Some structural and hydrodynamic properties of RCM-NCX-1116, a Ni-Cr metallic foam packing manufactured by Recemat International B.V (The Netherlands) are investigated using X-ray radiography and X-ray ... [more ▼]

Some structural and hydrodynamic properties of RCM-NCX-1116, a Ni-Cr metallic foam packing manufactured by Recemat International B.V (The Netherlands) are investigated using X-ray radiography and X-ray micro-tomography. Local values of porosity and pore diameters are measured on a foam sample 3D image obtained with a Skyscan-1172 high-resolution desk-top micro-CT system operated at 100 kV. Structural parameters computed on tomography images agree well with manufacturer data. Hydrodynamic tests are performed in a flat rectangular column packed with a sheet of metallic foam packing. Measurements are realized with a single-phase flow of liquid as well as with a counter-current flow of gas and liquid. Dynamic and static liquid holdup distributions and liquid radial spreading coefficient are measured on 2D radiographic images of the bed obtained with the high energy large scale ULG 420 kV scanner operated in the radiographic mode at 420 kV. Pressure drop measurements are successfully compared to experimental results reported in literature, as well as to the literature model predictions and to values computed using an in-house Lattice Boltzmann CFD simulation code. (C) 2009 Elsevier B.V. All rights reserved. [less ▲]

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See detailX-Ray Microtomography Studies of Tannin-Derived Organic and Carbon Foams
Tondi, G.; Blacher, Silvia ULg; Léonard, Angélique ULg et al

in Microscopy and Microanalysis (2009), 15

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See detailApplication of image analysis in food drying
Jinorose, Maturada; Devahastin, Sakamon; Blacher, Silvia ULg et al

in Ratti, C. (Ed.) Advances in Food Dehydration (2009)

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See detailWater desorption from resorcinol-formaldehyde hydrogels and adsorption in the resulting xerogels
Escalona, Ivonne; Gommes, Cédric ULg; Job, Nathalie ULg et al

in Microporous & Mesoporous Materials (2009), 117

Water desorption isotherms of resorcinol-formaldehyde (RF) hydrogels and subsequent water adsorption isotherms of the resulting xerogels are determined using the static gravimetric method, at various ... [more ▼]

Water desorption isotherms of resorcinol-formaldehyde (RF) hydrogels and subsequent water adsorption isotherms of the resulting xerogels are determined using the static gravimetric method, at various temperatures. Isotherms obtained from samples synthesized at various pH are compared. Two different mechanisms are involved in RF hydrogels water desorption. At large relative humidity the capillary tension resulting from water removal induces a macroscopic shrinkage of the gel, whereas at low humidity water is evaporated with no network deformation. These two mechanisms are analyzed using a plastic deformation model and the Guggenheim-Anderson-de Boer (GAB) model, respectively. Adsorption isotherms of RF xerogels are analyzed using the GAB model. [less ▲]

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See detailIn situ follow-up of adsorption in activated carbon beds using X-ray microtomography
Almazan, Maria del Carmen; Léonard, Angélique ULg; Toye, Dominique ULg et al

in Kaskel, S.; Llewellyn, P.; Rodriguez-Reinoso, F. (Eds.) et al Characterisation of Porous Solids VII - Proceedings of the 8th International Symposium on the Characterisation of Porous Solids (2009)

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See detailSimulations of Structures in Packed Columns and Validation by X-ray Tomography
Caulkin, R.; Jia, X.; Xu, C. et al

in Industrial & Engineering Chemistry Research (2009), 48(1), 202-213

Packing simulations of generic, nonspherical pellets were performed and compared with experimental data sets obtained using X-ray Computerized tomography (CT). Two modified versions of what was previously ... [more ▼]

Packing simulations of generic, nonspherical pellets were performed and compared with experimental data sets obtained using X-ray Computerized tomography (CT). Two modified versions of what was previously a purely geometrical, digitally based packing algorithm were implemented. Both are aimed at incorporating the effects of particle interaction forces, one utilizing the distinct element method (DigiDEM) and the other an intermediate solution (collision-guided packing or DigiCGP). This article summarizes the models and the simulations performed using these two modified versions of DigiPac and, for model validation purposes, compares the predicted results with the corresponding X-ray tomographic scans of packed columns, in terms of bulk density, local packing density profiles, and pellet orientation distributions. For packed beds of relatively large and identical pellets, the simulation results indicate that particle-particle and particle-wall interactions cannot be ignored if realistic packing structures are to be obtained by simulation and even a simplistic treatment of these interactions can produce significantly more realistic packing structure than none at all. [less ▲]

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See detailDrying of wastewater sludge’s, common practice and challenges
Crine, Michel ULg; Léonard, Angélique ULg

Conference (2008, November 20)

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See detailConvective drying of gels: comparison between simulated and experimental moisture profiles obtained by X-ray microtomography
Escalona, Ivonne; Jomaa, Wahbi; Olivera-Fuentes, Claudio et al

in Thorat, B. N. (Ed.) Drying 2008 - Proceedings of the 16th International Drying Symposium (IDS2008), Vol. C. (2008, November)

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See detailDetermination of the tortuosity of porous materials from binary or grey-tone tomographic reconstructions
Gommes, Cédric ULg; Almazan, Maria del Carmen; Léonard, Angélique ULg et al

Conference (2008, November)

Detailed reference viewed: 46 (8 ULg)
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See detailConvective drying tests of silt: experimental studies and modelling
Gerard, Pierre ULg; Bernadino, Joao; Léonard, Angélique ULg et al

Conference (2008, October 06)

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See detailEffect of liming on the convective drying of urban residual sludges
Huron, Yoland; Salmon, Thierry ULg; Crine, Michel ULg et al

Conference (2008, September)

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See detailProduction of adsorbent materials from dried residual sludges
Fostroy, Philippe; Salmon, Thierry ULg; Crine, Michel ULg et al

Poster (2008, September)

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See detailPore size distribution of baker’s yeast evaluation using x-ray micro-tomography
Debaste, Frédéric; Léonard, Angélique ULg; Halloin, Véronique et al

Poster (2008, September)

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See detailCharacterization of the porous structure of biodegradable scaffolds obtained with supercritical CO2 as foaming agent
Léonard, Angélique ULg; Calberg, Cédric ULg; Kerckhofs, Greet ULg et al

in Journal of Porous Materials (2008), 15(4), 397-403

Poly(ε-caprolactone) foams were prepared, via a batch process, by using supercritical CO2 as foaming agent. Their porous structure was characterized through mercury porosimetry, helium and mercury ... [more ▼]

Poly(ε-caprolactone) foams were prepared, via a batch process, by using supercritical CO2 as foaming agent. Their porous structure was characterized through mercury porosimetry, helium and mercury pycnometry, scanning electron microscopy (SEM) and X-ray microtomography observations coupled with image analysis. The pore size distributions obtained by these two latter techniques show that the pore structure is more homogeneous when the foaming process is performed under a high CO2 saturation pressure (higher than 250 bars). [less ▲]

Detailed reference viewed: 98 (31 ULg)
See detailThe problem of odours when drying sewage sludges
Léonard, Angélique ULg; Nicolas, Jacques ULg; Romain, Anne-Claude ULg et al

Conference (2008, June)

Detailed reference viewed: 48 (23 ULg)
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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)

Detailed reference viewed: 15 (2 ULg)