Ozonation characteristics of bisphenol A in water

Jaesang Lee, H. Park, J. Yoon

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Ozonation characteristics of bisphenol A were investigated as a function of gaseous ozone dose, initial concentration of bisphenol A, pH, radical scavenger (tert-butanol), and radical initiator (hydrogen peroxide). The ozonation led to a complete removal of bisphenol A in water within a certain period of time. The overall rate of the ozonation linearly increased with the ozone dose. The stoichiometry in the ozonation of bisphenol A was found to be 1.5 - 1.8 mole of ozone per mole of bisphenol A. The direct reaction rate constants were 1.3 × 104M-1s-1for bisphenol A (at pH = 2) and 1.6 × 109M-1s-1for dissociated bisphenol A (at pH = 12). Bisphenol A degraded via the direct reaction with molecular ozone in the pH range from 2 to 12. Degradation by OH radical was minor even at pH = 12. The overall degradation rate in heterogeneous conditions was independent of pH as it was limited by ozone mass transfer rate. Use of hydrogen peroxide did not alter the main degradation route and the molecular ozone remained a principal oxidant as a substantial portion of the OH radical is scavenged by hydrogen peroxide. Effective ozone mass transfer may appear essential to enhance the ozonation kinetics of bisphenol A.

Original languageEnglish
Pages (from-to)241-248
Number of pages8
JournalEnvironmental Technology
Volume24
Issue number2
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

Ozonization
Ozone
ozone
Water
hydrogen peroxide
water
Hydrogen Peroxide
degradation
mass transfer
Degradation
Mass transfer
tert-Butyl Alcohol
scavenger
stoichiometry
bisphenol A
ozonation
oxidant
reaction rate
Oxidants
Stoichiometry

Keywords

  • Bisphenol A
  • Competitive kinetics
  • Endocrine disrupting chemicals
  • OH radical
  • Ozone

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

Cite this

Ozonation characteristics of bisphenol A in water. / Lee, Jaesang; Park, H.; Yoon, J.

In: Environmental Technology, Vol. 24, No. 2, 2003, p. 241-248.

Research output: Contribution to journalArticle

Lee, J, Park, H & Yoon, J 2003, 'Ozonation characteristics of bisphenol A in water', Environmental Technology, vol. 24, no. 2, pp. 241-248.
Lee, Jaesang ; Park, H. ; Yoon, J. / Ozonation characteristics of bisphenol A in water. In: Environmental Technology. 2003 ; Vol. 24, No. 2. pp. 241-248.
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