Tayeb Benhalima1, 2, Amina Sadi1, Hafida Ferfera-Harrar12024-10-102024-10-102024-01-08Tayeb Benhalima1, 2, Amina Sadi1, Hafida Ferfera-Harrar1 . MAGNETIC ADSORBENT BASED ON CARBOXYMETHYL CELLULOSE FOR METHYLENE BLUE UPTAKE FROM AQUEOUS MEDIA. Vol 16. N 01. Janvier 2024. Faculté dessciences xacts. Université d'El-Oued. [consulté en 11/12/2023]. Disponible à l'adresse. [ doi: htttp://dx.doi.org/10.4314/jfas.1345 ].https://dspace.univ-eloued.dz/handle/123456789/34990ross-linked carboxymethyl cellulose/Dextran sulfate (CMC/DS) magnetic nanocomposite beads, incorporating oxide iron nanoparticles (Fe3O4) via ionotropic gelation, were synthesized and characterized using FTIR, SEM/EDX, NanoSEM, XRD, TGA, and VSM. The addition of Fe3O4 imparted a porous structure, enhanced thermal stability, and superparamagnetic properties, facilitating efficient separation through an external magnetic field. Evaluated for methylene blue (MB) adsorption, the nanocomposites exhibited favorable pseudo-second-order kinetics, driven by chemisorption via electrostatic interactions. The Langmuir model described the adsorption isotherms, with a slightly reduced maximum equilibrium capacity (331 mg g-1) compared to the matrix (384 mg g-1). Demonstrating excellent reusability over five cycles, these magnetic nanocomposites present promising prospects for environmental remediation.enCarboxymethyl celluloseHydrogelsMagnetic nanoparticlesAdsorptionReuseOther