Comparative Performance of Novel Magnetic Ion-imprinted Adsorbents Employed for Cd, Cu and Ni Removal from Aqueous Solutions

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2018 Mar 21

PMID 29557038

Authors

Hossein Faghihian

Zahra Adibmehr

Affiliations

Soon will be listed here.

Abstract

Novel magnetic ion-imprinted polymer was prepared by use of SBA-15 as functional monomer, ethylene glycol dimethacrylate as cross linker, diphenylcarbazide as ligand, and Cd, Cu, and Ni as the template of ion source. The adsorption capacity of the synthesized adsorbent was 111, 95, and 87 mg g, respectively for cadmium, copper, and nickel. The selectivity of the adsorbents examined in the presence of different cations including Na, K, Ca, Mg, Zn, Co, Fe, Mn, Hg, and Pb indicated that the synthesized ion-imprinted adsorbents were highly selective for the appropriate cations. Kinetic studies indicated that the adsorption process was very fast and the equilibrium was established within 5 min and followed the pseudo-second-order kinetic model. The used ion-imprinted adsorbent was readily regenerated by elution with 2 M HNO, and the regenerated adsorbent retained most of its initial capacity. The calculated thermodynamic parameters indicated that the adsorption process was spontaneous and endothermic.

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