Fe3O4/Tea waste nanocomposite as heterogeneous photo-Fenton reagent for the degradation of Methyl Orange
Volume Title: 1
Authors
1Chemical Engineering Department, Engineering Faculty, University of Guilan, Rasht, Iran
2Fouman Faculty of Engineering, College of Engineering, University of Tehran, Fouman, Iran
Abstract
Magnetite nanoparticles (Fe3O4) loaded on tea waste (TW) as a low-cost heterogeneous catalyst (MTW) for photo-Fenton reaction was successfully synthesized by co-precipitation method. The photocatalytic degradation of methyl orange (MO) as an azo dye in the presence of MTW was investigated under UVC irradiation. The effect of several factors such as initial pH of the dye solution, H2O2 concentration, MTW dosage, and initial concentration of MO were studied on the degradation efficiency. The obtained results indicated that, the degradation efficiency increased by decreasing the initial pH of the MO solution and the initial concentration of MO. The optimum H2O2 concentration was achieved 50 mg/L with heterogeneous photo-Fenton process in maximum of 50 min reaction time. The Maximum 100% degradation of MO (10 mg/ L) was achieved in MTW/UVC/H2O2 process after 220 min irradiation , in the presence of MTW (1 g/L), and H2O2 (0.5 mM).
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