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Reference type: Journal
Authors: Faghihian H, Adibmehr Z
Article Title: Comparative performance of novel magnetic ion-imprinted adsorbents employed for Cd2+, Cu2+ and Ni2+ removal from aqueous solutions.
Publication date: 2018
Journal: Environmental Science and Pollution Research
Volume: 25
Issue: (15)
Page numbers: 15068-15079.
DOI: 10.1007/s11356-018-1732-9

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 Cd2+, Cu2+, and Ni2+ as the template of ion source. The adsorption capacity of the synthesized adsorbent was 111, 95, and 87 mg g-1, respectively for cadmium, copper, and nickel. The selectivity of the adsorbents examined in the presence of different cations including Na+, K+, Ca2+, Mg2+, Zn2+, Co2+, Fe2+, Mn2+, Hg2+, and Pb2+ 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 HNO3, and the regenerated adsorbent retained most of its initial capacity. The calculated thermodynamic parameters indicated that the adsorption process was spontaneous and endothermic
Template and target information: cadmium ion, Cd(II), copper ion, Cu(II), nickel ion, Ni(II)
Author keywords: Ion-imprinted polymer, Magnetic core-shell, Functionalization, separation, selectivity, mesoporous silica


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