ETUDE DE L’ADSORPTION DU BLEU DE METHYLENE (BM) A PARTIR DES SOLUTIONS AQUEUSES SUR UN BIOSORBANT PREPARE A PARTIR DES NOYAUX DE DATTE ALGERIENNE
Journal Title: Larhyss Journal - Year 2016, Vol 28, Issue 28
Abstract
In this study, the Algerian date stones were evaluated to preparing a biosorbent in order to use them as natural support for removal of methylene blue (MB) from aqueous solutions. In order to clarify the adsorption process, the batch experiments were performed to study the effect of operating parameters on the adsorption process such as: the biosorbent dose (2-20 g/L), the initial concentration in BM (10-100 mg/L), the contact time (10-120 min) and temperature (25-55 °C) were studied. To describe the adsorption equilibrium, the experimental data were analyzed by the Langmuir and Freundlich isotherms. Equilibrium is perfectly described by the Freundlich model whose correlation coefficient is greater than 0,99. Thermodynamic parameters such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) were also assessed and showed that the adsorption process was spontaneously feasible and endothermic. The results of this study show that the date stones can be advantageously used as a biosorbent low cost for removal of methylene blue from water and wastewater.
Authors and Affiliations
KHELIFI O. | Département des sciences de la matière, Faculté des sciences et de la technologie, Université Africaine Ahmed Draïa Adrar, Algérie, Laboratoire d'Analyses Industrielles et Génie des Matériaux, Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université 8 Mai 1945 Guelma, BP 401 Guelma 24000, Algérie, MEHREZ I. | Département des sciences de la matière, Faculté des sciences et de la technologie, Université Africaine Ahmed Draïa Adrar, Algérie, BEN SALAH W. | Département des sciences de la matière, Faculté des sciences et de la technologie, Université Africaine Ahmed Draïa Adrar, Algérie, BEN SALAH F. | Département des sciences de la matière, Faculté des sciences et de la technologie, Université Africaine Ahmed Draïa Adrar, Algérie, YOUNSI M. | Département des sciences de la matière, Faculté des sciences et de la technologie, Université Africaine Ahmed Draïa Adrar, Algérie, NACEF M. | Laboratoire d'Analyses Industrielles et Génie des Matériaux, Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université 8 Mai 1945 Guelma, BP 401 Guelma 24000, Algérie, AFFOUNE A. M. | Laboratoire d'Analyses Industrielles et Génie des Matériaux, Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université 8 Mai 1945 Guelma, BP 401 Guelma 24000, Algérie
Keywords
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