Applying mass transfer models for controlling organic compounds in ozonation process

Pen Chi Chiang, Ya Wen Ko, Yao Ming Yang, E. E. Chang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Mass transfer plays a significant role in the ozonation process. The prediction models associated with the volumetric overall mass transfer coefficient (K(L)a) and initial fractional ozone absorption (FOA0) during the ozonation process were developed through the use of dimensional analysis. It was found that the volumetric overall mass transfer coefficient is the function of diffusivity, agitation speed, and gas flow rate, and the parameters in the K(L)a equation are determined. Application of the prediction models for K(L)a and FOA0 would yield information to choose the most practically feasible operating parameters. The removability of total organic carbon (TOC) can be estimated based on the mass balance relationship and kinetic expression of TOC oxidation, during continuous laboratory ozonation of humic acid solution. The reaction rate constant averaged 0.0291 L/mg·min. The developed model in combination with the mass transfer and reaction kinetics can be used successfully in forecasting the most efficient agitation speed to control the formation of organic compounds. Also, the critical value of ozone partial pressure to achieve the highest TOC removability can be determined through the use of the above developed model.

Original languageEnglish
Pages (from-to)819-828
Number of pages10
JournalEnvironment International
Volume23
Issue number6
DOIs
Publication statusPublished - Nov 1997

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

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