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Vol. 33 No. 3 (2021): Vol 33 Issue 3

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Modelling and Optimizing the Solvent Extraction of Cadmium from Phosphoric Acid using Experimental Design

https://doi.org/10.14233/ajchem.2021.23079
K. Berkalou
Laboratory of Civil Engineering and Environment, Materials Water and Environment team, High School of Technology Sale, Mohammadia School of Engineering, Mohammed V University, Rabat, Morocco
A. Nounah
Laboratory of Civil Engineering and Environment, Materials Water and Environment team, High School of Technology Sale, Mohammadia School of Engineering, Mohammed V University, Rabat, Morocco
H. Chaair
Laboratory of Process Engineering and Environment, Faculty of Science and Technology Mohammadia, University of Hassan II Casablanca, Morocco
M. Khamar
Laboratory of Civil Engineering and Environment, Materials Water and Environment team, High School of Technology Sale, Mohammadia School of Engineering, Mohammed V University, Rabat, Morocco
R. Boussen
Laboratory of Nanotechnology Materials and Environment, Faculty of Sciences, Mohammed V University, Rabat, Morocco
A. Driouich
Laboratory of Process Engineering and Environment, Faculty of Science and Technology Mohammadia, University of Hassan II Casablanca, Morocco

Corresponding Author(s) : K. Berkalou

kaoutar.berkalou@gmail.com

Asian Journal of Chemistry, Vol. 33 No. 3 (2021): Vol 33 Issue 3

Abstract

The removal of cadmium from phosphoric acid was carried out using the solvent extraction process, taking into account factors such as pH, concentration of the extracting agent [EA], organic phase/aqueous phase (O/A) ratio, stirring time and stirring rate. In order to study the effect of these involved factors and their interactions on the extraction percentage of cadmium, a composite central design (CCD) of 24 experiments was adopted. An empirical model was developed and validated by applying ANOVA analysis. The graphical representation of this model in the variable space allowed to determine the optimal conditions of these factors. The extraction of cadmium from phosphoric acid reached a percentage of the order of 98%, under the following conditions: pH = 3, [EA] = 10-2 M, O/A = 1.1, stirring time 90 min, stirring rate 800 rpm.

Keywords

Solvent extraction Cadmium Experimental design Central composite design Response surface methodology
Berkalou, K., Nounah, A., Chaair, H., Khamar, M., Boussen, R., & Driouich, A. (2021). Modelling and Optimizing the Solvent Extraction of Cadmium from Phosphoric Acid using Experimental Design. Asian Journal of Chemistry, 33(3), 637–643. https://doi.org/10.14233/ajchem.2021.23079
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