Characterization of adansonia digitata (baobab wood) bio-oil and biochar produced using a fixed-bed tubular reactor / Tahar Masri in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 1 (02/2023)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 33, N° 1 (02/2023) . - p. 13-19 Titre : Characterization of adansonia digitata (baobab wood) bio-oil and biochar produced using a fixed-bed tubular reactor Type de document : texte imprimé Auteurs : Tahar Masri, Auteur ; Mohamed Yagoub, Auteur ; Amar Rouag, Auteur ; Adel Benchabane, Auteur ; Belhi Guerira, Auteur Année de publication : 2023 Article en page(s) : p. 13-19 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biochar Le biochar est un amendement du sol issu de la pyrolyse de biomasse. Il est utilisé en agriculture pour augmenter la qualité des sols, et donc leur productivité ; il est également utilisé dans la lutte contre le réchauffement climatique comme solution de séquestration à long terme de carbone atmosphérique dans les sols. Le biochar se différencie du charbon de bois par son utilisation (comme intrant plutôt que comme combustible) et donc par son impact environnemental (il agit comme un puits de carbone plutôt que de libérer du CO2 dans l'atmosphère lors de la combustion). Caractérisation Composites -- Propriétés mécaniques Composites -- Propriétés physiques Composites -- Propriétés thermiques Composites polymères Huiles et graisses végétales Pneus polymères expansés -- Recyclage Polystyrène Recyclage (déchets, etc.) Thermocinétique Index. décimale : 668.4 Plastiques, vinyles Résumé : This study aims to valorise industrial waste of Expanded Polystyrene Packaging waste (EPS) and used tire waste, in the production of a new composite material. The new composite material RTPC (Rubber Tire Polystyrene Composite) is a mixture of rubber particles from used tires, as reinforcement, and a matrix obtained by recycling EPS with gasoline. In this study, several matrix/reinforcement weight proportions (25%, 30% and 35%) and several reinforcement particle sizes (2-3, 3-4 and 4-5 mm) were considered. Physical, mechanical and thermal characterization were carried out in order to determine the density, the flexural modulus, the maximum stress and the thermal conductivity of the composite material. According to the obtained results, the RTPC material obtained is considered as a light material with a density between 500 and 600 kg/m3. The thermal characterization tests of the RTPC material also showed that the RTPC is an insulating material with thermal conductivity between 0.22 and 0.23 W/m.K. On the other hand, the three-point bending tests showed that the RTPC material has poor bending properties. The RTPC material can be used in the field of building construction as a good thermal insulator. The RTPC material can be used in other applications as a structural component in sandwich structures if its mechanical properties will improve. Note de contenu : - MATERIALS AND METHODS : Materials - RTPC characterizations - RESULTS AND DISCUSSION : Three bending test properties - The density of RTPC material - Thermal conductivity of the RTPC material - Table 1 : Various RTPC tested samples - Table 2 : Mechanical, physical and thermal properties of RTPC material DOI : https://doi.org/10.18280/rcma.330103 En ligne : https://iieta.org/download/file/fid/91636 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39261 [article]

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Manufacturing of composite panels from date palm leaflet and expanded polystyrene wastes using hot compression moulding process / Ahlem Malti in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 33, N° 3 (06/2023)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 33, N° 3 (06/2023) . - 153-164 Titre : Manufacturing of composite panels from date palm leaflet and expanded polystyrene wastes using hot compression moulding process Type de document : texte imprimé Auteurs : Ahlem Malti, Auteur ; Tahar Masri, Auteur ; Mohamed Yagoub, Auteur ; Islam Mohammed Mahbubul, Auteur ; Aida Ghazali, Auteur ; Adel Benchabane, Auteur Année de publication : 2023 Article en page(s) : 153-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage sous pression à chaud Composites à fibres végétales Composites à fibres végétales -- Propriétés mécaniques Déchets végétaux -- Recyclage Palmier dattier et constituants Panneaux de fibres Polymères expansés Polystyrène Index. décimale : 668.4 Plastiques, vinyles Résumé : This study focuses on the reduction of the environmental impact of plastic waste and the valorisation of vegetal wastes produced annually from date palms. This paper presents an experimental study on the manufacturing of composite panels based on date palm leaflets, DPL, and expanded polystyrene wastes were carried out. Hot compression process was proposed with the aim of improving the composite manufacturing techniques previously released by the team using a cold compression process. Three composites were studied with the weight fraction (wt.%) of 70, 75 and 80 of the DPL as a reinforcement. The weight fraction of expanded polystyrene is respectively 30, 25 and 20 wt.%. Physical and mechanical characterizations of biocomposites were performed with the reinforcement size between 0.315 mm and 0.5 mm. The result shows that the composite panels have a low density between 414 and 511 kg/m3. The composite panels showed an improved maximum stress and flexural modulus that can reach 6.18 MPa and 13.5 MPa respectively. These values are comparable to the literature values such as Medium Density Fibreboard (MDF) (13.5-25 MPa) and the Durian Peel and Coconut Coir (DPCC) particleboards (0.8-22.4 MPa), (0.7-43 MPa). However, the water absorption result ranging from 77 to 95 % shows that the studied composite panels are sensitive to moisture and exhibit high moisture uptake percentage thus limits their possibility of use in moist condition. Note de contenu : - INTRODUCTION : Biocomposites based on date palm fibres - Manufacturing process of date palm biocomposites - MATERIALS AND METHODS : Materials - Composites characterizations - RESULTS AND DISCUSSION : Density measurements - Flexural bending result - Water absorption result - Comparison to other published works - Table 1 : Various tested samples - Table 2 : Manufacturing process and conditions - Table 3 : Mechanical and physical properties of DPL expanded polystyrene composites with comparable biocomposites from the literature DOI : https://doi.org/10.18280/rcma.330303 En ligne : https://www.iieta.org/download/file/fid/103800 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40024 [article]

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