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Factors Affecting DBP Formation During Ozone-Bromide Reactions

Mohamed S. Siddiqui and Gary L. Amy
Journal (American Water Works Association)
Vol. 85, No. 1, Brominated DBPs (JANUARY 1993), pp. 63-72
Stable URL: http://www.jstor.org/stable/41293973
Page Count: 10
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Abstract

Ozonation of waters containing bromide ion leads to the formation of organic and inorganic by-products. By-product formation is influenced by bromide ion concentration, the source and concentration of organic precursors, pH, ozone dosage, temperature, and alkalinity. Both organic and inorganic by-products increased when bromide ion concentration increased but decreased with an increase in alkalinity. Organic by-products were found to increase with a decrease in pH, whereas brómate formation was favored by a high pH. In general, bromoform concentration first increased, then diminished, as the dosage of ozone was increased. Both ozonation and incubation temperatures had a positive effect on the formation of bromoform and brómate. PEROXONE appears to favor brómate formation over organic by-product formation, whereas the addition of ammonia reduces both brómate and organic by-products.

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