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Vol. 25 No. 5 (2013): Vol 25 Issue 5

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Comparative Study of Adsorption Ability of Ni(II) and Zn(II) Ionic Imprinted Amino-Silica Hybrid Toward Target Metal in Solution

https://doi.org/10.14233/ajchem.2013.14166
Buhani
Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Lampung, Indonesia
Suharso
Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Lampung, Indonesia
Andi Yuli Fitriyani
Department of Chemistry, Faculty of Mathematic and Natural Sciences, University of Lampung, Lampung, Indonesia

Corresponding Author(s) : Andi Yuli Fitriyani

Asian Journal of Chemistry, Vol. 25 No. 5 (2013): Vol 25 Issue 5

Abstract

This research investigated comparative study of adsorption ability from Ni(II) and Zn(II) ionic imprinted polymer [Ni(II)-IIP and Zn(II)-IIP] amino-silica hybrid to each Ni(II) and Zn(II) ion as a target metal. Adsorbent synthesis was carried out via sol-gel process with an active compound 3-aminopropyltrimethoxysilane and a silica matrix from tetraethylorthosilicate. Series of experiments with batch method were performed to determine adsorption kinetics, isotherm and selectivity of adsorbent Ni(II)-IIP toward Ni(II) target ion and Zn(II)-IIP toward Zn(II) target ion in solutions. Kinetic models of Ni(II) and Zn(II) ion for all adsorbents tend to follow a pseudo second order kinetic model and a Dubinin-Raduskevich (D-R) isotherm adsorption model. The adsorption capacity value (qDR) of Ni(II) ion on non-imprinted polymer (NIP) and Ni(II)-IIP is each 21.674 and 31.478 mg g-1, while the adsorption capacity value of Zn(II) ion on Zn(II)-NIP and Zn(II)-IIP is 19.255 and 24.633 mg g-1. The selectivity coefficient (a) value for each adsorbent shows that Ni(II)-IIP adsorbent is more effective upon its Ni(II) ion target metal than Zn(II)-IIP adsorbent with Zn(II) ion as its target.

Keywords

Ionic imprinting Adsorption selectivity Amino-silica hybrid Metal ion
Buhani, ., Suharso, ., & Yuli Fitriyani, A. (2012). Comparative Study of Adsorption Ability of Ni(II) and Zn(II) Ionic Imprinted Amino-Silica Hybrid Toward Target Metal in Solution. Asian Journal of Chemistry, 25(5), 2875–2880. https://doi.org/10.14233/ajchem.2013.14166
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