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  • Title: Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution.
    Author: Thinh NN, Hanh PT, Ha le TT, Anh le N, Hoang TV, Hoang VD, Dang le H, Khoi NV, Lam TD.
    Journal: Mater Sci Eng C Mater Biol Appl; 2013 Apr 01; 33(3):1214-8. PubMed ID: 23827563.
    Abstract:
    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.
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