Modeling and Optimization of Electrocoagulation Process for the Removal of Yellow145 dye Based on Central Composite Design

Abstract

In this study, Central Composite Design (CCD) approach of Response Surface Methodology (RSM) was applied to develop a mathematical model and to optimize the parameters of electrocoagulation process (EC) for the removal of Yellow145 (Y145) dye. The EC process was studied by using coupled electrodes of Fe-Fe and Al-Al, separately. The operational parameters of the process such as dye concentration, pH, electrolysis time and amount of NaCl were studied to obtain their desired levels for getting the high value of the removal of the dye. The values of correlation coefficient (R 2 ) of the model were found to be 81.71%, 56.93% for Fe-Fe and Al-Al, respectively. Analysis of variance (ANOVA) helped in finding the significant variables of the process. The response surface plots were plotted to observe the interaction between the levels of the factors on the response of the process.

Comparative Study of Chemical Coagulation and Electrocoagulation for the Treatment of Real Textile Wastewater: Optimization and Operating Cost Estimation

“…At a pH value greater than 10, the dominant specie is Al­(OH) 4 – , which obviously does not coagulate the pollutants, and hence, there is no reduction in COD and color. The same results were found by other researchers. , Besides, the high removal efficiency obtained for COD and color at alkaline and acidic medium could suggest that is not only the EC by direct anodic oxidation of Al electrode implicated in the pollutant removal, but also suggest that the indirect oxidation by oxidants such as hypochlorite or chlorine could happen. In fact, the chloride anions present in the raw wastewater (Table ) may be oxidized into chlorine (eq ).…”

Development of an electrocoagulation method using alternating pulse current to treat wastewater generated by tanneries

“…To achieve this objective, it is possible to use a model that incorporates both first-order and second-order kinetics. As explicated in the scholarly literature, researchers have often shown a preference for the utilization of second-order symmetrical designs, such as the threelevel factorial design (Missaoui et al 2013), the central composite layout (Gengec et al 2013;Tahir 2019), and the Box-Behnken design (Mehralian et al 2021). Variability in the selection of experimental sites, the number of levels for factors, and the number of runs is seen across different design models.…”