<abstract xmlns="http://www.w3.org/1999/xhtml">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.</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.

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

Mineralogia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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...

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

Publié en ligne: 01 déc. 2017

Pages: 71 - 86

Reçu: 13 avr. 2017

Accepté: 29 août 2017

DOI: https://doi.org/10.1515/mipo-2017-0013

Mots clés
zero-valent iron particles, kaolinite, adsorption, Pb(II), Mo(VI)

© 2018 Karolina Rybka, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Publié en ligne: 01 déc. 2017

Pages: 71 - 86

Reçu: 13 avr. 2017

Accepté: 29 août 2017

DOI: https://doi.org/10.1515/mipo-2017-0013

Mots clészero-valent iron particles, kaolinite, adsorption, Pb(II), Mo(VI)

© 2018 Karolina Rybka, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
zero-valent iron particles, kaolinite, adsorption, Pb(II), Mo(VI)