IJEP 42(13): 1548-1554 : Vol. 42 Issue. 13 (Conference 2022)
Imran Ahmad* and Debolina Basu
Motilal Nehru National Institute of Technology Allahabad, Civil Engineering Department, Prayagraj- 211 004, Uttar Pradesh, India
Abstract
In the current study, the central composite design (CCD) and the Taguchi method (TM) were applied for optimization of the electro-Fenton (EF) treatment of the Reactive Orange 16 (RO16) dye. The pH (A), electrolysis time (B), initial RO16 concentration (C) and current density (D) were identified as the process control parameters, while decolourization (RD) and COD removal rate (RC) as performance responses. The experimental design utilized two statistical tools: face-centred CCD and L16 orthogonal array. At optimized conditions, RD and RC were achieved at 75% and 65%, respectively. The correction coefficient (R2) values of 0.98 for CCD and 0.96 for TM, showed the models were statistically significant and in good agreement with one another. Furthermore, prob. > F-value was much less than 0.05 and the outcomes of the ANOVA confirmed the good model fitting of the experimental data. However, the TM proved to be a suitable approach for scrutinizing the selected parameters in terms of their percentage contribution to the response values. For the study, the most significant factor was determined as pH and current density, which impart a total of 40.8% and 45.06% contribution for RD and RC, respectively. It is found that with a lesser number of experiments and S/N ratio plots, the TM can apply as an effective substitute for CCD in the electro-Fenton process for treatment of textile effluent.
Keywords
Electro-Fenton process, Reactive Orange 16, Taguchi method, Response surface methodology (RSM), Central composite design (CCD)
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