title: Integrated ozonation and biomethanization treatments of vinasse derived from ethanol manufacturing.
abstract: Anaerobic digestion of vinasse derived from bioethanol manufacturing, in which total COD was found to be 68.56 ± 8.17 g/L, was studied in batch laboratory-scale reactors at mesophilic temperature (35 °C). The vinasse was subjected to a short ozonation pre-treatment (15 min) in which more than 50% reduction of phenols was observed, although the total organic carbon concentration remained approximately stable, indicating that the phenols were transformed into other simpler forms. The anaerobic biodegradability of raw and pre-treated vinasse was similar, reaching values close to 80% (COD). However, the methane yield coefficient and methane production rate enhanced by around 13.6% and 41.16%, respectively, when the ozonized vinasse was fed. These results indicate that the integration of chemical-biological treatments could be a viable option for the purification of this hazardous wastewater.
authors.affiliation: Departamento de Química Inorgánica e Ingeniería Química, Facultad de Ciencias, Universidad de Córdoba, Campus Universitario de Rabanales, Edificio Marie Curie, Ctra Madrid-Cadiz, km 396, 14071 Cordoba, Spain.
authors.forename: J A
authors.initials: JA
authors.lastname: Siles
authors.forename: I
authors.initials: I
authors.lastname: García-García
authors.forename: A
authors.initials: A
authors.lastname: Martín
authors.forename: M A
authors.initials: MA
authors.lastname: Martín
mesh_terms: D001673:Biodegradation, Environmental; D052918:Environmental Restoration and Remediation / Q000379:methods*; D000431:Ethanol / Q000138:chemical synthesis*; D007220:Industrial Waste / Q000517:prevention & control*; D008697:Methane; D010126:Ozone / Q000737:chemistry*; D010636:Phenols; D014874:Water Pollutants, Chemical / Q000378:metabolism
chemical_list: D007220:Industrial Waste; D010636:Phenols; D014874:Water Pollutants, Chemical; D000431:Ethanol; D010126:Ozone; D008697:Methane