Degradation of Toxic Indigo Carmine Dye by Electrosynthesized Ferrate (VI)

Pages 75-83

S. Barisci, H. Inan, O. Turkay, A. Dimoglo and D. Erol

DOI: https://doi.org/10.6000/1929-5030.2017.06.02.3

Published: 19 June 2017

Abstract: Response surface methodology was applied for optimizing indigo carmine (IC) dye removal by electrochemically produced ferrate (VI). Box-Behnken design was employed in this study, and design parameters were pH, Fe (VI) dose and initial dye concentration (C_o). R² and adjusted R² values were very high that indicated very good accuracy for the employed model. Optimum operational conditions were: 4.08-7.69 for pH, 24-118.83 mg/L for Fe (VI) dose and 60.68-99.13 mg/L for complete removal of IC. Produced by electrochemical method Ferrate (VI) provides high effectiveness for IC dye-containing synthetic wastewater.

Keyword: Adsorption, modified activated carbon, rare earth elements (REEs), adsorption isotherms, kinetics.