期刊
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 33, 期 3, 页码 1214-1218出版社
ELSEVIER
DOI: 10.1016/j.msec.2012.12.013
关键词
Fe3O4; Magnetic chitosan nanoparticles; Adsorption isotherm; Cr(VI)
资金
- Vietnam Ministry of Science and Technology [08/2011/HD-NDT]
A simple method was introduced to prepare magnetic chitosan nanoparticles by co-precipitation via epichlorohydrin cross-linking reaction. The average size of magnetic chitosan nanoparticles is estimated at ca. 30 nm. It was found that the adsorption of Cr(VI) was highly pH-dependent and its kinetics follows the pseudo-second-order model. Maximum adsorption capacity (at pH 3, room temperature) was calculated as 55.80 mg.g(-1), according to Langmuir isotherm model. The nanoparticles were thoroughly characterized before and after Cr(VI) adsorption. From this result, it can be suggested that magnetic chitosan nanoparticles could serve as a promising adsorbent for Cr(VI) in wastewater treatment technology. (C) 2012 Elsevier B.V. All rights reserved.
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