Etude du potentiel d’utilisation des déchets agroalimentaires, les grignons d’olives et les noyaux de date pour récupération et adsorption des métaux lourds

N. Babakhouya, S. Boughrara, F. Abed, N. Abai, S. Midoune

Abstract


Résumé : La présente étude porte sur l’application d’un adsorbant naturel préparé à base de grignon d’olives et de noyaux de dattes à différents pourcentages dans le domaine de traitement des effluents liquides industriels. Dans notre travail nous nous sommes intéressés à son application pour le cadmium (métal lourd). L’effet de plusieurs paramètres tel que le temps de contact, la concentration initiale en ions de cadmium, et le pH de la solution a été étudié en système en batch. Une modélisation des isothermes d’adsorption a été effectuée à l’aide des models d’isothermes de Langmuir, Freundlich et Temkin et leur coefficient de corrélation obtenus, indiquent que le model de Langmuir est favorable pour la plupart des proportions d’adsorbants.

Abstract: This study focuses on the application of a natural adsorbent prepared based olive pomace and date pits in different percentages in the field of treatment of industrial liquid effluents. In our work we are interested in its application for cadmium (heavy metal).

The effect of several parameters such as the contact time, the initial concentration of cadmium ions, and the pH of the solution was studied in a batch system.

A modeling of adsorption isotherms was carried out using the isotherm models Langmuir, Freundlich and Temkin and their correlation coefficient obtained indicate that the model Langmuir is favorable for most adsorbents proportions.


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