Modeling the ozonation of herbicide 2,4-D through a kinetic approach

Wei Chu, K. H. Chan, C. Y. Kwan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

A quantitative estimation of the ozonation of a herbicide 2,4-D solution through a kinetic approach was studied and modelled. The ozonation of 2,4-D was found to follow a pseudo-first-order kinetic and the degradation rates depended on the initial pH and on the ozone concentration. A model was proposed to quantitatively predict the pseudo-first-order rate constants of the decay of 2,4-D under different ozone concentrations and initial pH levels based on some useful and practical assumptions. The proposed model was able to successfully describe the reaction with insignificant errors; therefore another practical equation was proposed to size the contact tower for 2,4-D ozonation by ozone concentration (overdosed) and initial pH level.
Original languageEnglish
Pages (from-to)647-652
Number of pages6
JournalChemosphere
Volume55
Issue number5
DOIs
Publication statusPublished - 1 May 2004

Keywords

  • 2,4-D
  • Herbicide
  • Model
  • Oxidation
  • Ozone

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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