Investigating the performance of ion-imprinted polymer adsorbent for removing heavy metal zinc from aqueous environment
Subject Areas : journal of New Materials
مرتضی فقیهی
1
,
mohsen Esmaeilpour
2
*
1 - . استادیار، گروه پژوهشی شیمی و فرایند، پژوهشگاه نیرو، تهران، ایران
2 -
Keywords: Polymeric adsorbent, Ion printing, Zinc ion, Heavy metal, Isotherm, Kinetics.,
Abstract :
In this study, the construction and investigation of the properties of an ion-imprinted polymer adsorbent for the removal of heavy metal zinc from the aquatic environment was carried out. Initially, a magnetic core/shell structure of iron/silica was fabricated and after functionalization with an amine functional group, it was used as a base for the preparation of an ion-imprinted polymer adsorbent. The ion-imprinted polymer adsorbent was synthesized in the presence of a magnetic base, zinc target ion, initiator, and binder. FT-IR, XRD, FE-SEM, TEM, BET, and VSM tests were used to determine the structural properties of the core/shell base and the ion-imprinted polymer adsorbent. Also, for the adsorption performance, the effects of pH, adsorbent dosage, initial concentration, kinetics, and isotherm were performed. A spherical structure with an average particle size of 30-40 nm was observed for the ion-imprinted polymer adsorbent in the morphology results. Also, the presence of an iron phase (magnetite) with suitable magnetic performance was confirmed in XRD, FTIR and VSM tests. The experimental data showed a better agreement with the pseudo-second-order kinetic model and the Langmuir isotherm model, and the maximum adsorption capacity of zinc metal ion by the ion-imprinted polymer adsorbent was estimated to be 88.49 mg/g. The results showed that the ion-imprinted polymer adsorbent has a very good selective adsorption performance for zinc metal ion from aqueous media.
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