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In this paper, the adsorbent for the removal of hexavalent Cr (Chromium) from aqueous solutions has been prepared by modifying chitosan composite with EP (Epichlorohydrin) or GA (Glutaraldehyde).The modified cross-linked chitosan was characterized by SEM (Scanning Electron Microscopy) and FT-IR (Fourier Transform Infrared Spectroscopy).Batch adsorption experiments were carried out to evaluate the adsorption of Cr(VI) by the cross-linked chitosan under different conditions.Furthermore, the sorption mechanism of Cr(VI) by the cross-linked chitosan was investigated by applying Langmuir and Freundlich isotherm equations to the data obtained.The concentration of Cr in solution was determined by ICP-MS (Inductively Coupled Plasma Mass Spectrometry).The cross-linked chitosan can be an efficient sorbent for Cr(VI).
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Du et al. (2018) studied this question.
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