The Using of Plain PAC and PAC Impregnated with MgO and Fe<sub>2</sub>O<sub>3</sub> as Catalysts for the Degradation of Cationic Dyes: Homogenous and Heterogeneous Ozonation

Ali Akbar Mohammadi; Bahram Kamarehie; Ali Jafari; Nasrin Hosseingholizade; Mansour Ghaderpoori; Navid Alinejad; Muhammad Yousuf Jat Baloch; Mohammad Ahmadpour

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The Using of Plain PAC and PAC Impregnated with MgO and Fe₂O₃ as Catalysts for the Degradation of Cationic Dyes: Homogenous and Heterogeneous Ozonation

Ali Akbar Mohammadi ¹ ,Bahram Kamarehie ² ,Ali Jafari ³ ,Nasrin Hosseingholizade ⁴ ,Mansour Ghaderpoori ² ,Navid Alinejad ⁵ ,Muhammad Yousuf Jat Baloch ⁶ ,Mohammad Ahmadpour ⁷

¹ Department of Environmental Health Engineering, Neyshabur University of Medical Sciences, Neyshabur, Iran
² Environmental Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
³ School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
⁴ Public Health Promotion Association, Urmia University of Medical Sciences, Urmia, Iran
⁵ Department of Public Health, School of Health, Fasa University of Medical Sciences, Fasa, Iran
⁶ College of New Energy and Environment, Jilin University, Changchun, 130012, P.R. China
⁷ Department of Public Health, Maragheh University of Medical Science, Maragheh, Iran DOI : 10.4194/TRJFAS24745 Viewed : 322 - Downloaded : 178 This study presented the removal of methylene blue in the batch system based on catalytic ozonation (heterogeneous and homogenous). The effect of variables such as initial MB (methylene blue)concentration, initial pH of solution (3-11), contact time (5-40 min), and catalyst dosage on homogeneous and heterogeneous ozonation systems was examined. The findings of the research showed that dye removal was better in alkaline conditions. The amount of dye removed in acidic conditions was slightly better than in neutral conditions (approximately 10% to 15%). In addition, the removal efficiency of dye was decreased by increasing of concentration. Besides, as the amount of catalyst (dosage) increased, the removal efficiency of MB had been increased by 40%. Due to the use of catalyst, the significant difference was between the use of two processes of single ozonation processes (SOP) and catalytic ozonation processes (COPs). The results indicated thatMB degradation in COPs was several times faster (approximately 4.7 times). It was due to the numerous advantages of these processes in the removal of environmental pollutants, they can be widely used in the removal of various pollutants if their cost can be reduced. Keywords : Methylene blue Single ozonation process Dye, MgO, Fe₂O₃

The Using of Plain PAC and PAC Impregnated with MgO and Fe2O3 as Catalysts for the Degradation of Cationic Dyes: Homogenous and Heterogeneous Ozonation

Ali Akbar Mohammadi 1 ,Bahram Kamarehie 2 ,Ali Jafari 3 ,Nasrin Hosseingholizade 4 ,Mansour Ghaderpoori 2 ,Navid Alinejad 5 ,Muhammad Yousuf Jat Baloch 6 ,Mohammad Ahmadpour 7

The Using of Plain PAC and PAC Impregnated with MgO and Fe₂O₃ as Catalysts for the Degradation of Cationic Dyes: Homogenous and Heterogeneous Ozonation

Ali Akbar Mohammadi ¹ ,Bahram Kamarehie ² ,Ali Jafari ³ ,Nasrin Hosseingholizade ⁴ ,Mansour Ghaderpoori ² ,Navid Alinejad ⁵ ,Muhammad Yousuf Jat Baloch ⁶ ,Mohammad Ahmadpour ⁷