Sorption kinetics of indium, iron, and zinc ions on modified montmorillonite


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Abstract

Adsorption integral kinetic curves of indium and iron(III) ions were obtained from model solutions on a montmorillonite Metosol modified with di(2-ethylhexyl)phosphoric acid. The adsorption kinetics can be reliably described with pseudofirst and pseudosecond order models. Adsorption of metal ions on a Metosol reagent occurs in a mixed diffusion mode. The rate constants of external and internal diffusion on the Metosol reagent are greater for In3+ ions than those for Fe3+ one, so that it can be used for the selective sorption of indium from complex technological solutions in zinc production.

About the authors

K. L. Timofeev

Uralelectromed Enterprise of Metallurgical Industry

Email: mgi@elem.ru
Russian Federation, Verkhnyaya Pyshma, 624091

G. I. Maltsev

Uralelectromed Enterprise of Metallurgical Industry

Author for correspondence.
Email: mgi@elem.ru
Russian Federation, Verkhnyaya Pyshma, 624091

A. V. Sviridov

Uralelectromed Enterprise of Metallurgical Industry

Email: mgi@elem.ru
Russian Federation, Verkhnyaya Pyshma, 624091

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