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Étude du comportement thermique et valorisation des déchets du bois

Abstract : In the frame of the European program Inco-Copernicus ?Bioval Network?, our study consisted in the characterization of the thermal behavior of the samples defined in the network. This was realized by thermal analysis using different experimental conditions. For the second part of this work, results of wood pyrolysis in autoclave were studied. Considering the fact that several biomass-plastic composites are actually prepared, or that waste upgrading needs treatment of biomass products and plastic materials, we also analyzed results of wood-plastic copyrolysis in autoclave. In particular, we insisted on analyzing light liquid fractions (bp < 180° C, under atmospheric pressure) of our experiments. Main results are : using two thermogravimetric configurations, obtained results are comparable so much for characteristic temperatures than for weight evolutions ; concerning kinetic parameters, obtained values are in agreement with those of the literature and the degradation of the studied polymers is independent of wood whatever its origin. This shows that during heating wood-plastic mixture, in TGA conditions, results are additive. As demonstrated in this work, the mixtures of the different types of biomass and polyolefinic polymers can be radically converted to liquid products by pyrolysis under inert atmosphere in the autoclave conditions. The origin of biomass as well as the type of polymers plays an important role on final product distribution. Obtained results demonstrate the potential of wood-plastic copyrolysis process for utilization of lignocellulosic waste in liquid production
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  • HAL Id : tel-01775452, version 1



Nicolas Marin. Étude du comportement thermique et valorisation des déchets du bois. Chimie. Université Paul Verlaine - Metz, 2001. Français. ⟨NNT : 2001METZ006S⟩. ⟨tel-01775452⟩



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