The effect of bromide ion on the formation of organohalogen disinfection by-products during ozonation

Ya Wen Ko, Pen Chi Chiang, E. E. Chang

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13 Citations (Scopus)


Ozonation of water containing bromide ion (Br-) leads to the formation of brominated disinfection byproducts (DBPs). The purpose of this study was to examine the influence of bromide ion upon the distribution and variation of organohalogen DBPs. Bromide ion concentration had a negative effect on chloroform formation as opposed to increased formation of brominated trihalomethanes (THMs). The results of factor analysis lead dearly to the interpretation that the bromide ion was strongly correlated with brominated THMs and less strongly with brominated HANs (haloacetonitriles). Compared to THMs and HANs, brominated HAAs (haloacetic acids) demonstrated a relatively weak correlation to bromide ion concentration. The addition of alkalinity enhanced the formation of chloroform when ozonation time was 10 to 30 minutes, while concentrations of other bromide ion-containing THMs decreased with increasing alkalinity.

Original languageEnglish
Pages (from-to)349-361
Number of pages13
JournalOzone: Science and Engineering
Issue number4
Publication statusPublished - 1996



  • Alkalinity
  • Bromide Incorporation Factor
  • Bromide Ion (Br )
  • Disinfection Byproducts (DBPs)
  • Drinking Water
  • Factor Analysis
  • Ozonation
  • Ozone
  • Trihalomethanes (THMs)

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

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