https://doi.org/10.15255/KUI.2020.081
Published: Kem. Ind. 70 (11-12) (2021) 669–673
Paper reference number: KUI-81/2020
Paper type: Original scientific paper
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Application of Immobilized TiO2 for Removal of Cu(II) Ions

I. Jajčinović, A. Štrkalj and I. Brnardić

Abstract

The adsorption of Cu(II) ions on a mixture of anatase and rutile, two polymorphic forms of TiO₂, was investigated. The influence of the adsorbent/adsorbate contact time as well as the influence of the initial concentration of Cu(II) on the adsorption was monitored. The results showed that equilibrium occurred after only one minute of contact of Cu(II) and TiO₂, and that the adsorption capacity increased with initial concentration of Cu(II) ions. Experimental data were processed by Langmuir and Freundlich isotherm. The obtained results showed that the Freundlich model better described the investigated adsorption system, and that the adsorption was of a physical nature.

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Keywords

adsorption, Cu(II) ions, TiO2, isotherms