TY - JOUR T1 - OPTIMIZATION OF THE PERFORMANCE OF "FENTON" AND "ELECTRO-FENTON" PROCESSES FOR DYE REMOVAL IN SUSTAINABLE WASTEWATER MANAGEMENT AU - Fındık, Esra AU - Dağcı, Eda Nur PY - 2025 DA - September Y2 - 2025 DO - 10.18038/estubtda.1542313 JF - Eskişehir Technical University Journal of Science and Technology A - Applied Sciences and Engineering JO - Estuscience - Se PB - Eskisehir Technical University WT - DergiPark SN - 2667-4211 SP - 332 EP - 345 VL - 26 IS - 3 LA - en AB - Technological advancements have led to the production and widespread use of numerous and diverse chemical substances in various industries. Among the produced and used substances, dyes hold one of the most significant shares. To mitigate the harmful effects and color problems caused by these substances, which are present in the wastewater of textile and dye manufacturing plants and can also be released into the environment, it is necessary to develop alternative technologies. For color removal, which is caused by dyes that are mostly toxic and resistant pollutants, the use of Fenton and Fenton-like processes, which are advanced oxidation methods, has been preferred over traditional treatment methods. In this study, the color removal performance of the Fenton and Electro-Fenton processes was optimized using Basic Blue 3 (BB3) dye. The study is three factors and three levels (Fe2+: 5-10-20 mg/L, H2O2: 500-1000-2000 mg/L, Current Density: 20-30-40 mA/cm2, and Dye Concentration C0: 2.5-5-7.5 mg/L). In the experiments conducted in the laboratory, it was observed that in the Fenton (Fe + H2O2) process, the best color removal efficiency of 98.2% was achieved when the BB3 concentration was 7.5 mg/L, the iron (Fe2+) concentration was 5 mg/L, and hydrogen peroxide (H2O2) was 500 mg/L. In the Electro-Fenton process, 100% color removal was observed when the hydrogen peroxide concentration was 500 mg/L, the dye concentration was 2.5 mg/L, and at all three current densities (20-30-40 mA/cm2). In the Electro-Fenton process, higher removal efficiencies were achieved in a shorter time at lower dye concentrations, while energy consumption calculations revealed that the Fenton process is a more economical alternative. KW - Basic Blue 3 KW - Electro-Fenton KW - Fenton KW - Color Removal CR - [1] Bulca Ö, Palas B, Atalay S, Ersöz G. Post-treatment of real textile wastewater by using a hybrid system comprising of electrocoagulation and Fenton-like oxidation in the presence of perovskite/activated carbon composite catalyst. Gazi Univ J Sci Part C Des Technol. 2023;11(3):631-642. CR - [2] Bulut E. Removal of CI Basic Blue 3 dye from textile wastewater by electrochemical application. Sakarya Univ J Sci. 2016;20(3). CR - [3] Gümüş D. 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