Hassen Khazri*1,2, Ibtissem Ghorbel-Abid1,2, Rafik Kalfat1, Malika Trabelsi-Ayadi2
1Laboratory of Methods and Techniques of Analysis (LMTA), National institute of Physico-chemical Analysis (INRAP), Technological Pole-2020, Sidi Thabet, ARIANA Tunisia.
2Laboratoire des Applications de la Chimie aux Ressources et Substances Naturelles et a` l’Environnement (LACReSNE), Faculty of Sciences of Bizerte, Zarzouna 7021, Tunisia
Pharmaceutical compounds have an emerging group of organic pollutants in aquatic systems. Among many used PCs, the most frequently detected compounds is carbamazepine (CBZ).This work investigate the possibility of elimination of carbamazepine (CBZ) from aqueous solutions using cuttlefish bone powder (CFPB) as an adsorbent material by studying the effect of various equilibrium parameters like contact time, pH effect, concentration variation and temperature using a simple technique which is UV. The results obtained showed that sorption on the cuttlefish bone could be a powerfull method for the removal of Carbamazépine (CBZ). The efficacy of cuttlefish bone in the elimination of Carbamazépine (CBZ) from aqueous solutions is about 95 % at pH 9. The kinetic results of adsorption are described better by using the model of pseudo second order. Unlike The isotherm of adsorption of Carbamazépine (CBZ) is described very well by the model of Freundlich. The thermodynamic parameters obtained indicate that the adsorption of CBZ on the cuttlefish bone powder (CFPB) is a spontaneous and endothermic process. Surface morphology and crystalline nature of the prepared sorbent were characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), scanning electron microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopy.
Keywords: adsorption, Carbamazépine, cuttlefish bone, Characterization, equilibrium, kinetics, thermodynamics