title: Anaerobic treatability of wastewater contaminated with propylene glycol.
abstract: The purpose of this study was to investigate the biodegradability of propylene glycol in anaerobic conditions by using methanogenic culture. A master reactor was set up to develop a culture that would be acclimated to propylene glycol. After reaching steady-state, culture was transferred to serum bottles. Three reactors with same initial conditions were run for consistency. Propylene glycol was completely biodegradable under anaerobic methanogenic conditions. Semi-continuous reactors operated at a temperature of 35°C had consistently achieved a propylene glycol removal of higher than 95 % based on chemical oxygen demand (COD). It was found that in semi-continuous reactors, anaerobic treatment of propylene glycol at concentrations higher than 1,500 mg COD m(-3) day(-1) was not convenient due to instable effluent COD.
authors.affiliation: Department of Environmental Engineering, Faculty of Engineering, Istanbul University, 34320, Avcilar, Istanbul, Turkey. nsezgin@istanbul.edu.tr
authors.forename: Naim
authors.initials: N
authors.lastname: Sezgin
authors.forename: Gulseven Ubay
authors.initials: GU
authors.lastname: Tonuk
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006358:Hot Temperature; D019946:Propylene Glycol / Q000378:metabolism*; D062065:Wastewater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D019946:Propylene Glycol; D062065:Wastewater; D014874:Water Pollutants, Chemical