title: [Effects of Anions on Bromate Formation During Ozonation of Bromide-Containing Water].
abstract: To study the effects of common inorganic anions on bromate formation during ozonation of bromide-containing water, the effects of different mass concentrations of Cl-, HCO3-, and SO(4)2- on bromate formation were investigated in bench-scale test. The mechanisms of these three coexisting anions on bromate formation was analyzed based on the ozone decomposition, HOBr/OBr- formation, and transformation of total bromine species. Our results showed that adding of 3-150 mg.L-1 Cl- can reduce 8. 8%-25. 7% of bromate formation within 60 min. 63. 9% of bromate would be decreased by increasing SO(4)2- concentration from 0 mg.L-1 to 30 mg.L-1 within 20 min. However, more than 6. 4 times the mass concentrations of bromate were formed as HCO3- mass concentrations increased from 0 mg.L-1 to 30 mg.L-1 within 20 min. The production of bromate was slightly increased when HCO3- mass concentrations was above 30 mg.L-1. Under the condition of the same ozone dosage and reaction time, adding of Cl- and SO(4)2- will inhibit the formation of bromate during ozonation, while adding of HCOC3- significantly will increase the production of bromate.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wu
authors.forename: Chun-de
authors.initials: CD
authors.lastname: Wu
authors.forename: Lü-gang
authors.initials: LG
authors.lastname: Liu
authors.forename: Bo-jie
authors.initials: BJ
authors.lastname: Yuan
mesh_terms: D001959:Bromates / Q000737:chemistry*; D001965:Bromides / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D001959:Bromates; D001965:Bromides; D014867:Water; D010126:Ozone; C027664:hypobromous acid