Application of Taguchi’s experimental design method for optimization of Acid Red 18 removal by electrochemicaloxidation process

سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 373

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شناسه ملی سند علمی:

JR_EHEM-5-4_007

تاریخ نمایه سازی: 18 اسفند 1397

چکیده مقاله:

Background: Electro-oxidation is developed as an electrochemical method to overcome the problemsof the conventional decolorization technologies and is an appropriate alternative for the treatment ofcolored wastewater from various industries. The purpose of this study was to evaluate the efficiency ofthe electrochemical oxidation process in removal of chemical oxygen demand (COD) and Acid Red 18(AR18) dye from aqueous solutions.Methods: In this research, a laboratory scale of electro-coagulation reactor for the treatment of syntheticwastewater was made and studied. The effects of different variables including pH, current density, dyeconcentration, and electrolysis time were investigated. The experiment steps were designed by Design-Expert 10 software using the selected variables. Finally, the dye and COD analysis was performed byspectrophotometer. The optimization was performed using Taguchi fractional factorial design duringthe removal of dye and COD.Results: Maximum removal of dye (89%) and COD (72.2%) were obtained at pH=3, current density=20mA/cm2, initial dye concentration=100 mg/L, and reaction time=45 min. ANOVA test showed asignificant relationship between statistical model and test data. Also, the results indicate that thedistribution of the residues of the model was normal.Conclusion: By designing experiments through Taguchi method, the removal process will be optimizedand by decreasing the number of experiments, the optimal conditions for pollutant removal will beprepared. The results suggest that the Electro-oxidation system is a very suitable technique for theenhancement of wastewater treatment.

نویسندگان

Zabihollah Yousefi

Department of Environmental Health Engineering, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran

Ali Zafarzadeh

Environmental Health Research Center, School of Health, Golestan University of Medical Sciences, Gorgan, Iran

Abdolaziz Ghezel

School of Health and Health Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran