References of "Léonard, Angélique"
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See detailOn Water Transfer and Hydraulic Connection Layer During the Convective Drying of Rigid Porous Material
Prime, Noémie; Housni, Z; Fraikin, Laurent ULg et al

in Transport in Porous Media (2015), 106(1), 47-72

The convective drying of a natural porous material, limestone, is investigated in this study, with both experimental and numerical approaches. The first experimental campaign, which focuses on the ... [more ▼]

The convective drying of a natural porous material, limestone, is investigated in this study, with both experimental and numerical approaches. The first experimental campaign, which focuses on the influence of samples’ slenderness, suggests the presence of a hydraulic connection layer between the porous water and the external environment, in spite of the very fine pore structure of the material. This hydraulic transfer enables the fast water evaporation at the beginning of the drying test, when external conditions drive the kinetics. Furthermore, the results show that this layer does not exceed 30 mm deep from the external surface, given the drying conditions of the test. A second experimental campaign aims to analyse, by mean of an X-ray tomography tool, the internal water content during the drying. It confirms that water transfer takes place within the limestone in two distinct stages. The first stage being faster than the second one with a homogeneous desaturation along the sample, it is consistent with the hypothesis of the hydraulic connection layer. Finally, the finite element modelling makes possible to identify the main mechanisms of water transfer, namely liquid convection and vapour diffusion. © 2014, Springer Science+Business Media Dordrecht [less ▲]

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See detailExperimental Investigation of Hydromechanical Coupling During Clay Drying
Prime, Noémie; Fraikin, Laurent ULg; Léonard, Angélique ULg et al

in Drying Technology (2015), 33(15-16), 1821-1829

Boom clay is studied as a potential host rock for underground nuclear waste storage. This experimental work analyzes its response under the convective drying conditions that may be applied in case of ... [more ▼]

Boom clay is studied as a potential host rock for underground nuclear waste storage. This experimental work analyzes its response under the convective drying conditions that may be applied in case of contact with the ambient atmosphere (during disposal drilling, for instance) or with gallery ventilation (because of damage in gallery lining). The drying kinetics is first established. In a second phase, the cracking and shrinkage onset and development are focused on, thanks to an X-ray microtomography device. The results show a phase of ideal shrinkage and a phase of shrinkage with desaturation, which are closely related to the kinetics. Cracking and shrinkage progressively develop from the drying surface, up to values representing about 3 and 12% of the cross section area, respectively. [less ▲]

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See detailPositive operations on convective drying of sewage sludge: comparison of back mixing and sawdust addition
Li, Jie; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

in Proceedings of the 5th European Drying Conference (EuroDrying'2015) (2015)

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See detailDesign of a convective labscale dryer working either with superheated steam or air
Fraikin, Laurent ULg; Salmon, Thierry ULg; Léonard, Angélique ULg

in Proceedings of the 5th European Drying Conference (EuroDrying'2015) (2015)

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See detailEffect of sawdust addition on convective drying of sludges: comparison of the structural characteristics
Li, Jie; Plougonven, Erwan ULg; Fraikin, Laurent ULg et al

in Proceedings of the 5th European Drying Conference (EuroDrying'2015) (2015)

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See detailStudy of water diffusivity during drying of mortar
Kahlerras, Loubna ULg; Courard, Luc ULg; Michel, Frédéric ULg et al

in Proceedings of the 5th European Drying Conference (EuroDrying'2015) (2015)

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See detailDrying of alga as a source of bioenergy feedstock and food supplement - A review
Bennamoun, Lyes; Afzal, Muhammad. T.; Léonard, Angélique ULg

in Renewable & Sustainable Energy Reviews (2015), 50

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See detailInvestigation on Convective Drying of Mixtures of Sewage Sludge and Sawdust in a Fixed Bed
Li, Jie ULg; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

in Drying Technology (2015), 33(6), 704-712

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See detailImage analysis of X-ray tomograms of sludge during convective drying in a pilot-scale fixed bed
Li, Jie ULg; Plougonven, Erwan ULg; Fraikin, Laurent ULg et al

in Chemical Engineering Science (2015), 134

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See detailConvective drying of a single cherry tomato: Modeling and experimental study
Bennamoun, Lyes; Khama, Reda; Léonard, Angélique ULg

in Food and Bioproducts Processing (2015), 94

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See detailEnvironmental relevance of end of life vehicle valorisation - LCA of COMET case study
Groslambert, Sylvie ULg; Belboom, Sandra ULg; Lewis, Grégory et al

Conference (2014, November 17)

LCA of Electric Vehicles Recycling : Comparison between three business lines of dismantling

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See detailEnhanced sludge dewatering and drying comparison of two linear polyelectrolytes co-conditioning with Polyaluminium chloride
Pambou, Yvon-Bert ULg; Fraikin, Laurent ULg; Salmon, Thierry ULg et al

Poster (2014, October 23)

Annual production of sewage sludge in Europe is estimated at more than ten million tons of dry matter. Use in agriculture and incineration are the main ways of valorization. In this context, sludge drying ... [more ▼]

Annual production of sewage sludge in Europe is estimated at more than ten million tons of dry matter. Use in agriculture and incineration are the main ways of valorization. In this context, sludge drying appears as an essential step after mechanical dewatering. It reduces the costs of storage and transport, allows the stabilization and the hygienization of sludge while increasing its calorific value. However, this process is highly energy consuming and still needs to be optimized as it constitutes an important economic and environmental issue. This implies the improvement of knowledge about sludge drying, including the impact of the mechanical dewatering step. Before studying experimentally the influence of polymers type and dosage use for dewatering on the rheological properties and the drying process, it is necessary to assess the stability of the sludge during of the storage. Because sludge is a living material that can rapidly change, we use the method of experimental design in order to get maximum information with minimal testing, regarding sludge stability during storage. [less ▲]

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See detailINFLUENCE OF SLUDGE TREATEMENT ON ITS CONVECTIVE DRYING BEHAVIOR
Fraikin, Laurent ULg; Herbreteau, Benjamin; Salmon, Thierry ULg et al

Conference (2014, August 27)

Drying appears as a major step prior to valorization of sludge from wastewater treatment plant. This study uses an experimental design on different sludges to highlight the drying behavior according to ... [more ▼]

Drying appears as a major step prior to valorization of sludge from wastewater treatment plant. This study uses an experimental design on different sludges to highlight the drying behavior according to drying conditions, storage and extrusion. This research is performed with industrial view, but on a single cylinder sample, and focuses on five responds: maximum drying flux, time to reach 95% of dry matter, final volume, critical moisture and slowing-down coefficient. [less ▲]

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