Akademik Veri Yönetim Sistemi
World Congress on Applied Nanotechnology (W-CAN), 24 - 26 Kasım 2021, ss.1
In this study, it was aimed to investigate the efficiency of ZnO doped pyrite as a
heterogeneous Fenton catalyst for COD removal from solution prepared from a mixture of
methyl orange and reactive orange 16 dyes. Used pyrite ore was purchased commercially,
which has origin in Spain. The effect of major parameters such as pH (3-7), catalyst dosage
(0.5-3 g/L), and H2O2 concentration (0.5-2 g/L) were investigated under fixed agitation speed
of 150 rpm, reaction time of 60 min., reaction temperature of 20 °C in a batch system.
Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray
diffractometer (XRD) method, and Fourier Transform Infrared Spectroscopy (FTIR) analyses
were performed to characterize the ZnO doped pyrite. Optimum values were determined as,
H2O2 concentration of 1 g/L, pH of 5.05 (natural pH of mixed dye solution), and 2 g/L of
catalyst dosage. Under these optimum conditions, the COD removal efficiency was calculated
as 80.04%. The EDX analysis of ZnO doped pyrite showed that the extra Zn peaks were
observed with 10.46 wt% compared to undoped pyrite. The characteristic reflections such as
Fe-O, Fe-S are observed by FTIR spectrum. Moreover, the peak that appeared around 700-600
cm-1 can be attributed to ZnO vibrations. Finally, it can be said that ZnO doped py