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Efficiency of Pb(II) and Mo(VI) Removal by Kaolinite Impregnated with Zero-Valent Iron Particles Cover

Efficiency of Pb(II) and Mo(VI) Removal by Kaolinite Impregnated with Zero-Valent Iron Particles

Open Access
|Dec 2017

Abstract

In this work, kaolinite modified with zero-valent iron was synthesized and used as a sorbent for Pb(II) and Mo(VI) removal from aqueous solutions. The obtained material was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The methods revealed successful modification by the Fe0particles precipitation on the surface of well-ordered kaolinite. The sorption experiment results showed a significant increase of sorption capacity in relation to the raw kaolinite. The kaolinite with 25% content of Fe0was found to be the best material for Pb(II) and Mo(VI) removal, resulting in approximately 500 mmol·kg-1and 350 mmol·kg-1sorption, respectively. The possible mechanisms responsible for metals’ removal were identified as reduction by Fe0‘core’ and adsorption on the iron hydroxides ‘shell’. The study indicated that the obtained material is capable of efficient Pb(II) and Mo(VI) removal and may be an interesting alternative to other methods used for heavy metals’ removal.

DOI: https://doi.org/10.1515/mipo-2017-0013 | Journal eISSN: 1899-8526 | Journal ISSN: 1899-8291
Language: English
Page range: 71 - 86
Submitted on: Apr 13, 2017
Accepted on: Aug 29, 2017
Published on: Dec 1, 2017
Published by: Mineralogical Society of Poland
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2017 Karolina Rybka, Katarzyna Suwała, Paulina Maziarz, Jakub Matusik, published by Mineralogical Society of Poland
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.