Journal
WATER SCIENCE AND TECHNOLOGY
Volume 70, Issue 6, Pages 1004-1010Publisher
IWA PUBLISHING
DOI: 10.2166/wst.2014.315
Keywords
adsorption; adsorption kinetics; chitosan; co-precipitation; heavy metals; magnetic nanoparticles
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This study investigated the applicability of magnetite Fe3O4 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.
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