title: Preparation and characterization of iron oxide nanoparticles coated with chitosan for removal of Cd(II) and Cr(VI) from aqueous solution.
abstract: This study investigated the applicability of magnetite Fe(3)O(4) nanoparticles coated with chitosan (CMNs) for the removal of some toxic heavy metals from simulated wastewater. Magnetic nanomaterials were synthesized using the co-precipitation method and characterized by transmission electron microscope, scanning electron microscope, X-ray diffraction, and Fourier transformer infrared spectroscopy. The magnetic properties of the prepared magnetic nanoparticles were determined by a vibrating-sample magnetometer. Batch experiments were carried out to determine the adsorption kinetics of Cr(VI) and Cd(II) by magnetic nanoparticles. It is noteworthy that CMNs show a highly efficient adsorption capacity for low concentration Cr(VI) and Cd(II) ions solution, which can reach 98% within 10 min.
authors.affiliation: Department of Medical Biophysics, Medical Research Institute, University of Alexandria, 16 Horria Avenue, El Hadra, Postal address 21561, Egypt E-mail: th_shalaby@yahoo.com.
authors.forename: Th I
authors.initials: TI
authors.lastname: Shalaby
authors.affiliation: Department of Medical Biophysics, Medical Research Institute, University of Alexandria, 16 Horria Avenue, El Hadra, Postal address 21561, Egypt E-mail: th_shalaby@yahoo.com.
authors.forename: N M
authors.initials: NM
authors.lastname: Fikrt
authors.affiliation: Department of Medical Biophysics, Medical Research Institute, University of Alexandria, 16 Horria Avenue, El Hadra, Postal address 21561, Egypt E-mail: th_shalaby@yahoo.com.
authors.forename: M M
authors.initials: MM
authors.lastname: Mohamed
authors.affiliation: Department of Medical Biophysics, Medical Research Institute, University of Alexandria, 16 Horria Avenue, El Hadra, Postal address 21561, Egypt E-mail: th_shalaby@yahoo.com.
authors.forename: M F
authors.initials: MF
authors.lastname: El Kady
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D053758:Nanoparticles / Q000737:chemistry*; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry
chemical_list: D002104:Cadmium; D048271:Chitosan; D002857:Chromium; D005290:Ferric Compounds; D007477:Ions; D062065:Wastewater; C000499:ferric oxide