title: Enhanced coagulation-photocatalytic treatment of Acid red 73 dye and real textile wastewater using UVA/synthesized MgO nanoparticles.
abstract: Sequencing coagulation - photocatalytic degradation using UVA/MgO nanoparticles process was investigated for Acid red 73dye removal and then treatment of a real textile wastewater. Effective operational parameters including pH and coagulant and photocatalyst dosage were studied in synthetic wastewater and then the process was applied for real wastewater. Both coagulation and photocatalytic processes were pH dependent. At coagulant dosage of 200 mg/L and initial pH of 6, the dye concentration decreased from 200 to 31 mg/L. Complete removal of AR73 was observed with MgO nanoparticles of 0.8 g/L, initial pH of 5 and reaction time of 60 min. Langmuir-Hinshelwood model was well fitted with removal results (R(2): 0.939-0.988 for different initial dye concentration). In the case of real textile wastewater, the sequence coagulation-UVA/MgO nanoparticles photocatalytic degradation yielded considerable total COD and TOC removal 98.3% and 86.9%respectively, after 300 min.
authors.affiliation: Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: sahand369@yahoo.com.
authors.forename: Sahand
authors.initials: S
authors.lastname: Jorfi
authors.affiliation: School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: g1989.barzegar@gmail.com.
authors.forename: Gelavizh
authors.initials: G
authors.lastname: Barzegar
authors.affiliation: Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: mehdiahmadi241@yahoo.com.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ahmadi
authors.affiliation: Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran. Electronic address: rezadarvish86@yahoo.com.
authors.forename: Reza
authors.initials: R
authors.lastname: Darvishi Cheshmeh Soltani
authors.affiliation: Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: n.jaafarzade@yahoo.com.
authors.forename: Nemat
authors.initials: N
authors.lastname: Alah Jafarzadeh Haghighifard
authors.affiliation: Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: afshin_ir@yahoo.com.
authors.forename: Afshin
authors.initials: A
authors.lastname: Takdastan
authors.affiliation: Department of Health Sciences, Faculty of Health, Safety and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: reza.saeedi@gmail.com.
authors.forename: Reza
authors.initials: R
authors.lastname: Saeedi
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: mehrabtahi@yahoo.com.
authors.forename: Mehrnoosh
authors.initials: M
authors.lastname: Abtahi
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D057919:Biological Oxygen Demand Analysis; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008277:Magnesium Oxide / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D009282:Naphthalenesulfonates / Q000737:chemistry*; D055668:Photochemical Processes; D013783:Textile Industry; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D008277:Magnesium Oxide; D009282:Naphthalenesulfonates; D062065:Wastewater; C408149:brilliant crocein
keywords: Acid red 73; Coagulation; MgO nanoparticles; Photocatalysis; Textile wastewater