Abstract
The electrochemical treatment of textile dye wastewater containing Levafix Blue CA, Levafix Red CA and Levafix Yellow CA reactive dyes was studied on iron electrodes in the presence of NaCl electrolyte in a batch electrochemical reactor. The wastewater was synthetically prepared in relatively high dye concentrations between 400 mg/L and 2000 mg/L. The electrochemical treatment of textile dye wastewater was optimized using response surface methodology (RSM), where current density and electrolyte concentration were to be minimized while dye removal and turbidity removal were maximized at 28 °C reaction temperature. Optimized conditions under specified cost driven constraints were obtained for the highest desirability at 6.7 mA/cm 2, 5.9 mA/cm 2 and 5.4 mA/cm 2 current density and 3.1 g/L, 2.5 g/L and 2.8 g/L NaCl concentration for Levafix Blue CA, Levafix Red CA and Levafix Yellow CA reactive textile dyes, respectively.
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