title: Bromate formation in a hybrid ozonation-ceramic membrane filtration system.
abstract: The effect of pH, ozone mass injection rate, initial bromide concentration, and membrane molecular weight cut off (MWCO) on bromate formation in a hybrid membrane filtration-ozonation reactor was studied. Decreasing the pH, significantly reduced bromate formation. Bromate formation increased with increasing gaseous ozone mass injection rate, due to increase in dissolved ozone concentrations. Greater initial bromide concentrations resulted in higher bromate concentrations. An increase in the bromate concentration was observed by reducing MWCO, which resulted in a concomitant increase in the retention time in the system. A model to estimate the rate of bromate formation was developed. Good correlation between the model simulation and the experimental data was achieved.
authors.affiliation: Department of Civil Engineering, McMaster University, Hamilton, Ontario, Canada.
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Moslemi
authors.forename: Simon H
authors.initials: SH
authors.lastname: Davies
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Masten
mesh_terms: D001959:Bromates / Q000138:chemical synthesis* / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical / Q000737:chemistry; D007700:Kinetics; D008567:Membranes, Artificial; D008956:Models, Chemical; D008970:Molecular Weight; D010126:Ozone / Q000737:chemistry*; D010539:Permeability; D012995:Solubility; D013997:Time Factors
chemical_list: D001959:Bromates; D008567:Membranes, Artificial; D017665:Hydroxyl Radical; D010126:Ozone