Open AccessModelling and Optimizing the Solvent Extraction of Cadmium from Phosphoric Acid using Experimental Design
Author(s) -
Kaoutar Berkalou,
Abderrahman Nounah,
Hassan Chaair,
Mohamed Khamar,
Ratiba Boussen,
Anas Driouich
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23079
Subject(s) - phosphoric acid , cadmium , chemistry , extraction (chemistry) , central composite design , solvent , chromatography , aqueous solution , aqueous two phase system , phase (matter) , response surface methodology , organic chemistry
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/aqueousphase (O/A) ratio, stirring time and stirring rate. In order to study the effect of these involved factorsand their interactions on the extraction percentage of cadmium, a composite central design (CCD) of24 experiments was adopted. An empirical model was developed and validated by applying ANOVAanalysis. The graphical representation of this model in the variable space allowed to determine theoptimal conditions of these factors. The extraction of cadmium from phosphoric acid reached a percentageof the order of 98%, under the following conditions: pH = 3, [EA] = 10-2 M, O/A = 1.1, stirring time 90min, stirring rate 800 rpm.