Magnetic Chitosan–Iron(III) Hydrogel as a Fast and Reusable Adsorbent for Chromium(VI) Removal
作者： Zihan Yu , Xiaodan Zhang , Yuming Huang
DOI: 10.1021/IE400781N
关键词:
摘要: The magnetic chitosan–iron(III) hydrogel (MCh-Fe) was synthesized and characterized by SEM, TG, XRD, FT-IR used to remove toxic chromium(VI) (CrVI) from aqueous solution. adsorption of CrVI onto the MCh-Fe adsorbent fast could reach equilibrium in less than 30 min. well described pseudo-second-order rate model. isotherm better matched with Langmuir an endothermic spontaneous process. loading capacity on remained at a high level even after five cycles, showing that can be for repeated removal. Column results indicated below 0.5 mg L–1 found effluent up about 350 bed volumes two wastewaters containing 115.0 5.6 CrVI, respectively. removal mechanism also investigated.
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