Sorption capacity of ultrasound-activated natural bentonite regarding copper ions

Keywords

bentonite, montmorillonite, sorbent, heavy metals, physicochemical methods of research, sorption isotherms.

Cite as

Kochubei V. V., Yaremchuk Ya. V., Yaholnyk S. G., and Danyliak М.-О. М. Sorption capacity of ultrasound-activated natural bentonite regarding copper ions. Physicochemical Mechanics of Materials. 2024. 60(1), 119-127.

https://doi.org/10.15407/pcmm2024.01.119

Abstract

The adsoptive properties of bentonite from the Ilnytskyi deposit (Ukraine) regarding the copper ions under conditions when bentonite is activated with ultrasound are investigated. Based on the methods of X-ray diffraction and complex thermal analysis, it was determined that a bentonite fraction with a particle size ≤ 10·10^–6 m is mainly represented by Ca, Mg-montmorillonite. Ultrasound-activated bentonite was found to have an increased sorption capacity of copper ions. Saturation of natural bentonite and bentonite activated with Cu²⁺ ions occurs according to ion exchange mechanism. The sorption characteristics of both natural and activated bentonites were compared by modeling the sorption isotherms experimental data using the Langmuir equation. The prospects of the use of ultrasound-activated bentonite for wastewater treatment from heavy metal ions are shown.

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