Hydrodynamic characterization and mass transfer analysis of an in-line multi-jets ozone contactor

Mahad S. Baawain, Mohamed Gamal El-Din, Daniel W. Smith, Angelo Mazzei

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This research study investigates mixing and ozone mass transfer characteristics of a pilot-scale in-line multi-jets ozone contacting system. The hydrodynamic characteristics of the contactor were studied using a two-dimensional laser flow map particle image velocimetry coupled with planar laser induced fluorescence (PIV/PLIF). The PIV/PLIF system provided a combination of simultaneous whole-field velocity and concentration data in two-phase flows for different operating conditions. All measurements were conducted under a total liquid flow rate of about 10 L/s with gas flow rate ranging from 0.05 to 0.4 L/s. The gas was introduced to the system through a series of side stream injectors. The side injectors were tested under opposing and alternating modes. A mass transfer study was also conducted to estimate the overall mass transfer coefficient under the same operational conditions used for the hydrodynamics study. It was found that for the same number of jets (i.e., same gas flow rate) the liquid dispersion (D L) was higher when alternating jets were used. Higher ozone mass transfer rates were observed when using opposing jet compared to the same number of alternating jets.

Original languageEnglish
Pages (from-to)449-462
Number of pages14
JournalOzone: Science and Engineering
Volume33
Issue number6
DOIs
Publication statusPublished - 2011

Fingerprint

Ozone
mass transfer
Mass transfer
Hydrodynamics
hydrodynamics
ozone
laser induced fluorescence
Flow rate
gas flow
Velocity measurement
Flow of gases
Lasers
Fluorescence
liquid
Liquids
two phase flow
Two phase flow
laser
Gases
analysis

Keywords

  • Dispersion Coefficient
  • Hydrodynamics
  • Laser
  • Mass Transfer
  • Mixing
  • Ozone
  • Particle Image Velocimetry
  • Planar Laser Induced Fluorescence

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Engineering

Cite this

Hydrodynamic characterization and mass transfer analysis of an in-line multi-jets ozone contactor. / Baawain, Mahad S.; El-Din, Mohamed Gamal; Smith, Daniel W.; Mazzei, Angelo.

In: Ozone: Science and Engineering, Vol. 33, No. 6, 2011, p. 449-462.

Research output: Contribution to journalArticle

Baawain, Mahad S. ; El-Din, Mohamed Gamal ; Smith, Daniel W. ; Mazzei, Angelo. / Hydrodynamic characterization and mass transfer analysis of an in-line multi-jets ozone contactor. In: Ozone: Science and Engineering. 2011 ; Vol. 33, No. 6. pp. 449-462.
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