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Research Article Open access CC BY 4.0

Copper Adsorption by a Clay from Central Ivory Coast: Analysis by Differential Pulse Anodic Stripping Voltammetry

Manouan Wedjers Max Robin, Koné Yetchié Tchonrontcha, Kambire Ollo, Kouakou Yao Urbain, Pohan Lemeyonouin Aliou Guillaume

International Research Journal of Pure and Applied Chemistry · pp. 98–106 · Published 5 Jun 2024

10.9734/irjpac/2024/v25i3860

Abstract

Heavy metals such as copper are not only a problem for air pollution: they are bio persistent, disrupt ecosystems, damage soils, surface waters, forests, and crops, and accumulate in the food chain. The aim was to propose effective methods for quantifying and decontaminating wastewater containing copper. In this study, the treatment of copper(II)-containing wastewater was carried out using clay, and the concentration of Cu2+ was monitored using the differential pulse anodic stripping voltammetry method. Physical characterization revealed the porous nature of our clay. Furthermore, the kinetic study of Cu2+ adsorption on clay is adapted to the pseudo-order 2 kinetic model, and the appropriate isotherm is that of Langmuir with an equilibrium time of 20 min. Cu2+ adsorption is maximal at pH = 6. The maximum monolayer adsorption capacity was found to be 66.54 mg/g.

Voltammetry copper clay adsorption

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