Etude de la biosorption d’un colorant basique sur un matériau végétal en système dynamique

N. Guendouz, H. Rezzaz-Yazid

Abstract


Résumé : L’objectif de cette étude, est de tester le pouvoir adsorbant d’un matériau végétal local et abondant dans notre pays, les pédicelles de dattes, pour l’élimination d’un colorant synthétique : le Bleu de Méthylène. Les essais de biosorption de BM en mode dynamique ont servi pour examiner l’influence de quelques paramètres de fonctionnement intervenant dans la biosorption en lit fixe, tels que le débit d’alimentation, la hauteur du lit, la porosité du lit (compactage) et la concentration initiale de BM. La caractérisation du système, en utilisant la méthode de la zone de transfert de matière, nous a permis de conclure que la biosorption est favorisée pour les faibles débits (4 mL/min), aux plus grandes hauteur et porosité du lit et à la plus faible concentration initiale en BM.

Abstract: The objective of this study is to test the adsorbing capacity of a local and abundant vegetable material in our country, the date pedicels, for the elimination of a synthetic dye: ¶Methylene blue.  The tests of biosorption of BM in dynamic mode were served to examine the influence of some parameters stepping in the biosorption in fixed bed, such as the rate of feed, the height of the bed, the porosity of the bed (compaction) and the initial concentration of BM. The characterization of the system, using the method of the zone of transfer of matter, Allowed us to conclude that the biosorption is favored for lower flow (4 mL/min), with largest the height and porosity of the bed and with the weakest initial concentration in BM.

 


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