title: Application of integrated ozone and granular activated carbon for decolorization and chemical oxygen demand reduction of vinasse from alcohol distilleries.
abstract: This study investigates the treatment of the distilleries vinasse using a hybrid process integrating ozone oxidation and granular activated carbons (GAC) in both batch and continuous operation mode. The batch-process studies have been carried out to optimize initial influent pH, GAC doses, the effect of the ozone (O3) and hydrogen peroxide (H2O2) concentrations on chemical oxygen demand (COD) and color removal of the distilleries vinasse. The continuous process was carried out on GAC and ozone treatment alone as well as the hybrid process comb both methods to investigate the synergism effectiveness of the two methods for distilleries vinasse COD reduction and color removal. In a continuous process, the Yan model described the experimental data better than the Thomas model. The efficiency of ozonation of the distilleries vinasse was more effective for color removal (74.4%) than COD removal (25%). O3/H2O2 process was not considerably more effective on COD and color removal. Moreover, O3/GAC process affected negatively on the removal efficiency by reducing COD and color from distilleries vinasse. The negative effect decreased by increasing pH value of the influent.
authors.affiliation: Department of Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran; Sabzevar University of Medical Sciences, Sabzevar, Iran.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Hadavifar
authors.affiliation: Department of Environmental Science, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, P.O. Box: 64414-356 Iran. Electronic address: hunesi@modares.ac.ir.
authors.forename: Habibollah
authors.initials: H
authors.lastname: Younesi
authors.affiliation: Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
authors.forename: Ali Akbar
authors.initials: AA
authors.lastname: Zinatizadeh
authors.affiliation: Department of Environmental Science, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, P.O. Box: 64414-356 Iran.
authors.forename: Faezeh
authors.initials: F
authors.lastname: Mahdad
authors.affiliation: Department of Environmental Engineering & Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, Queensland 4111, Australia.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Environmental Science, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, P.O. Box: 64414-356 Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Ghasemi
mesh_terms: D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006801:Humans; D007220:Industrial Waste; D010100:Oxygen / Q000737:chemistry; D010126:Ozone / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D002606:Charcoal; D010126:Ozone; D010100:Oxygen
keywords: Cane molasses; Ozonation; Synergistic effect; Vinasse; Wastewater treatment