Catalytic ozonation with metal oxides: An option to control THM formation potential

Tao Zhang*, J. Ma, J. Lu, Z. Chen, C. Li, J. Jiang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

This paper aimed at illustrating the impact of catalytic ozonation on trihalomethane formation potential (THMsFP) of a filtered surface water. Catalytic ozonation with several metal oxides (synthetic α-FeOOH (FeOOH), γ·Al2O3 (Al2O3), CeO2 and MgO) significantly reduced THMsFP of the water compared with ozonation alone. For the FeOOH catalyzed ozonation, several factors, including bromide concentration, pH, alkalinity, ozone dosage, and reaction time, were further studied for their effect on THMsFP of the water. The FeOOH/O3 showed a significant advantage over ozonation in controlling the THMsFP at the applied conditions of bromide (0-3.36 mg/L), pH (6.33-9.43), O3/DOC ratio (0.65-2.05 mg/mg), and reaction time (2-20 min). Increase of bicarbonate alkalinity weakened its advantage. The possible mechanism for the FeOOH/O 3 in controlling the THMsFP can be ascribed to higher DOC removal rate and enhanced oxidation of some precursors.

Original languageEnglish (US)
Title of host publication5th World Water Congress
Subtitle of host publicationDrinking Water Treatment Processes
EditorsG. Amy, Ajit Annachhatre, Erik Arvin, Jining Chen, Jaewon Cho
Pages63-70
Number of pages8
Edition3
DOIs
StatePublished - Dec 11 2006

Publication series

NameWater Science and Technology: Water Supply
Number3
Volume6
ISSN (Print)1606-9749

Keywords

  • Bromide
  • Catalytic ozonation
  • FeOOH
  • Filtered water
  • Metal oxides
  • THMsFP

ASJC Scopus subject areas

  • Water Science and Technology

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