title: Enhanced photocatalytic degradation of tetracycline and real pharmaceutical wastewater using MWCNT/TiO2nano-composite.
abstract: Photocatalytic degradation of tetracycline using MWCNT/TiO2nanocomposite was investigated under UVC irradiation. The effective operational parameters included pH, irradiation time, photocatalyst dosage, weight ratio of MWCNT to TiO2and tetracycline concentration and were studied consecutively. Complete removal of tetracycline concentrations of up to 10 mg/L was obtained at MWCNT to TiO2ratio of 1.5 (w/w%), pH 5, photocatalyst dosage of 0.2 g/L. Pseudo-first order kinetic model was best fitted with the experimental results (R2: 0.91-0.98 for different tetracycline concentrations). Based on TOC analysis, mineralization was 37% in the same reaction conditions for initial tetracycline concentration of 10 mg/L and reached to 83% after 300 min. In the case of real pharmaceutical wastewater, the COD concentration of 2267 mg/L decreased to 342 mg/L after 240 min in the same operational conditions.
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: School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: bayatiyani.hojat@gmail.com.
authors.forename: Hojjatallah
authors.initials: H
authors.lastname: Ramezani Motlagh
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: Nematollah
authors.initials: N
authors.lastname: Jaafarzadeh
authors.affiliation: School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: azarmostoufi@yahoo.com.
authors.forename: Azar
authors.initials: A
authors.lastname: Mostoufi
authors.affiliation: Department of Health Sciences, Faculty of Health, Safety and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: r.saeedi@sbmu.ac.ir.
authors.forename: Reza
authors.initials: R
authors.lastname: Saeedi
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: sahand369@yahoo.com.
authors.forename: Sahand
authors.initials: S
authors.lastname: Jorfi
mesh_terms: D002384:Catalysis; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry; D055668:Photochemical Processes; D010782:Photolysis; D013752:Tetracycline / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D013752:Tetracycline; D014025:Titanium; D062065:Wastewater; D014874:Water Pollutants, Chemical; C009495:titanium dioxide
keywords: Advanced oxidation technology; MWCNT/TiO(2); Pharmaceutical wastewater; Photocatalytic degradation; Tetracycline