TY - JOUR TI - Degradation of Reactive Orange 16 Dye With Heterogeneous Fenton Process Using Magnetic Nano-Sized Clay as Catalyst: A Central Composite Optimization Study AB - In this study, Fe3O4/montmorillonite was synthesized as a heterogeneous Fenton catalyst to remove Reactive Orange 16 from aqueous solutions based on chemical oxygen demand. System parameters such as H2O2 concentration, catalyst dose, pH, and reaction time were numerically optimized based on Central Composite Design. The catalyst was characterized with X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, dynamic light scattering, ζ potential, and Brunauer-Emmett-Teller. The adsorption process contributed to the removal of Reactive Orange 16, but the heterogeneous Fenton process had a higher share and occurred faster than the adsorption process. Optimum conditions were determined as catalyst dosage:1.83 (g/L), H2O2 concentration:77.98 (mM), pH:3, and reaction time:60 min. Under these conditions, chemical oxygen demand removal efficiency estimated from the model was 84.82% and found experimentally was 85.90%. Successful removal of Reactive Orange 16 from aqueous environments is possible with a heterogeneous Fenton process using Fe3O4/ montmorillonite. AU - ÖZTÜRK, Dilara DO - 10.15671/hjbc.937728 PY - 2022 JO - Hacettepe Journal of Biology and Chemistry VL - 50 IS - 2 SN - 1303-5002 SP - 113 EP - 129 DB - TRDizin UR - http://search/yayin/detay/1113966 ER -