Heavy Metal Ions Adsorption on Chitosan-Magnetite Microspheres
نویسندگان
چکیده
Composite chitosan-magnetite microparticles (Fe-Cc) were evaluated as a new adsorbent for cobalt and nickel ion separation from aqueous solutions. Sorption batch experiments were conducted for optimizing the pH, initial target ion concentration and adsorbent amount. The experimental data were fitted using Langmuir, Freundlich, and respectively DubininRadushkevich isotherm models. The Langmuir model is the best fit. The material has a maximum adsorption capacity of 588.24 mg/g for cobalt ions and respectively 833.34 mg/g for nickel ions, superior to other magnetic chitosan adsorbents reported in the literature. Desorption and regeneration study revealed that the particles might be used up to three times without significant loss in adsorption capacity. Copyright © 2012 Praise Worthy Prize S.r.l. All rights reserved.
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