Using Taguchi Method to Optimize Recovery of Bismuth by Electrolysis
الموضوعات : Physical Chemistry & ElectrochemistryRasoul Khayyam Nekouei 1 , Amir Peyman Soleymani 2 , Saeed Akhavan 3 , Ali Ashrafi NasrAbadi 4 , Alireza Aghababaei Samani 5
1 - School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
2 - Department of Materials Engineering , Isfahan University of Technology, Isfahan, Iran
3 - Department of Materials Engineering , Isfahan University of Technology, Isfahan, Iran
4 - Department of Materials Science Engineering, Sharif University of Technology, Tehran Iran
5 - Department of Materials Engineering , Isfahan University of Technology, Isfahan, Iran
الکلمات المفتاحية: This paper presents a methodology, based on the taguchi parameter design approach, for the optimization of process parameters for bismuth recovery from aqueous solutions. The process parameters considered are [Bi3+], [NaCl], temperature, and cathodic current density. In addition, cell voltage and current efficiency as two responses have been considered. An orthogonal array L9, the signal-to-noise (S/N) ratio, and the analysis of variance were used to analyze the effect of selected process parameters and their levels. From a metallurgical point of view, the separation and recovery of bismuth from a bismuth glance concentrate through leaching, purification and electrowining of chloride solutions were carried out. The optimum conditions for the selected parameter values were found as [Bi3+] (75 g/L), [NaCl] (25 g/L), temperature (65°C) and current density (100 A/m2). Finally, a mathematical model has been proposed and the results of a confirmatory run are reported to verify the results, which indicate that this methodology is more efficient in optimizing the process parameters,
ملخص المقالة :
This paper presents a methodology, based on the taguchi parameter design approach, for the optimization of process parameters for bismuth recovery from aqueous solutions. The process parameters considered are [Bi3+], [NaCl], temperature, and cathodic current density. In addition, cell voltage and current efficiency as two responses have been considered. An orthogonal array L9, the signal-to-noise (S/N) ratio, and the analysis of variance were used to analyze the effect of selected process parameters and their levels. From a metallurgical point of view, the separation and recovery of bismuth from a bismuth glance concentrate through leaching, purification and electrowining of chloride solutions were carried out. The optimum conditions for the selected parameter values were found as [Bi3+] (75 g/L), [NaCl] (25 g/L), temperature (65°C) and current density (100 A/m2). Finally, a mathematical model has been proposed and the results of a confirmatory run are reported to verify the results, which indicate that this methodology is more efficient in optimizing the process parameters.
