Impinging-jet ozone bubble column modeling

Hydrodynamics, gas hold-up, bubble characteristics, and ozone mass transfer

Mahad S. Baawain, Mohamed Gamal El-Din, Katie Clarke, Daniel W. Smith

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A transient back flow cell model was used to model the hydrodynamic behaviour of an impinging-jet ozone bubble column. A steady-state back flow cell model was developed to analyze the dissolved ozone concentration profiles measured in the bubble column. The column-average overall mass transfer coefficient, kLa (s-1), was found to be dependent on the superficial gas and liquid velocities, uG (m.s-1) and uL (m.s-1), respectively, as follows: kLa = 55.58·uG1.26·uL0.08. The specific interfacial area, a (m-1), was determined as a = 3.61 × 103·uG0.902·uL -0.038 by measuring the gas hold-up (εG = 4.67·uG1.11·uL -0.05) and Sauter mean diameter, dS (mm), of the bubbles (dS = 7.78·uG0.207·uL - 0.008). The local mass transfer coefficient, kL (m.s-1), was then determined to be: kL = 15.40·uG0.354·uL0.118.

Original languageEnglish
Pages (from-to)245-259
Number of pages15
JournalOzone: Science and Engineering
Volume29
Issue number4
DOIs
Publication statusPublished - Jul 2007

Fingerprint

Bubble columns
Ozone
Bubbles (in fluids)
bubble
mass transfer
Mass transfer
Hydrodynamics
Gases
hydrodynamics
ozone
gas
modeling
liquid
Liquids

Keywords

  • Back Flow Cell Model
  • Backmixing
  • Bubble Characteristics
  • Gas Hold-up
  • Hydrodynamics
  • Impinging-Jet Bubble Column
  • Overall Mass Transfer Coefficient
  • Ozone
  • Specific Bubble Interfacial Area

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Impinging-jet ozone bubble column modeling : Hydrodynamics, gas hold-up, bubble characteristics, and ozone mass transfer. / Baawain, Mahad S.; El-Din, Mohamed Gamal; Clarke, Katie; Smith, Daniel W.

In: Ozone: Science and Engineering, Vol. 29, No. 4, 07.2007, p. 245-259.

Research output: Contribution to journalArticle

@article{827924e3cebf48e5ad2f1944b717ef04,
title = "Impinging-jet ozone bubble column modeling: Hydrodynamics, gas hold-up, bubble characteristics, and ozone mass transfer",
abstract = "A transient back flow cell model was used to model the hydrodynamic behaviour of an impinging-jet ozone bubble column. A steady-state back flow cell model was developed to analyze the dissolved ozone concentration profiles measured in the bubble column. The column-average overall mass transfer coefficient, kLa (s-1), was found to be dependent on the superficial gas and liquid velocities, uG (m.s-1) and uL (m.s-1), respectively, as follows: kLa = 55.58·uG1.26·uL0.08. The specific interfacial area, a (m-1), was determined as a = 3.61 × 103·uG0.902·uL -0.038 by measuring the gas hold-up (εG = 4.67·uG1.11·uL -0.05) and Sauter mean diameter, dS (mm), of the bubbles (dS = 7.78·uG0.207·uL - 0.008). The local mass transfer coefficient, kL (m.s-1), was then determined to be: kL = 15.40·uG0.354·uL0.118.",
keywords = "Back Flow Cell Model, Backmixing, Bubble Characteristics, Gas Hold-up, Hydrodynamics, Impinging-Jet Bubble Column, Overall Mass Transfer Coefficient, Ozone, Specific Bubble Interfacial Area",
author = "Baawain, {Mahad S.} and El-Din, {Mohamed Gamal} and Katie Clarke and Smith, {Daniel W.}",
year = "2007",
month = "7",
doi = "10.1080/01919510701451441",
language = "English",
volume = "29",
pages = "245--259",
journal = "Ozone: Science and Engineering",
issn = "0191-9512",
publisher = "Taylor and Francis Ltd.",
number = "4",

}

TY - JOUR

T1 - Impinging-jet ozone bubble column modeling

T2 - Hydrodynamics, gas hold-up, bubble characteristics, and ozone mass transfer

AU - Baawain, Mahad S.

AU - El-Din, Mohamed Gamal

AU - Clarke, Katie

AU - Smith, Daniel W.

PY - 2007/7

Y1 - 2007/7

N2 - A transient back flow cell model was used to model the hydrodynamic behaviour of an impinging-jet ozone bubble column. A steady-state back flow cell model was developed to analyze the dissolved ozone concentration profiles measured in the bubble column. The column-average overall mass transfer coefficient, kLa (s-1), was found to be dependent on the superficial gas and liquid velocities, uG (m.s-1) and uL (m.s-1), respectively, as follows: kLa = 55.58·uG1.26·uL0.08. The specific interfacial area, a (m-1), was determined as a = 3.61 × 103·uG0.902·uL -0.038 by measuring the gas hold-up (εG = 4.67·uG1.11·uL -0.05) and Sauter mean diameter, dS (mm), of the bubbles (dS = 7.78·uG0.207·uL - 0.008). The local mass transfer coefficient, kL (m.s-1), was then determined to be: kL = 15.40·uG0.354·uL0.118.

AB - A transient back flow cell model was used to model the hydrodynamic behaviour of an impinging-jet ozone bubble column. A steady-state back flow cell model was developed to analyze the dissolved ozone concentration profiles measured in the bubble column. The column-average overall mass transfer coefficient, kLa (s-1), was found to be dependent on the superficial gas and liquid velocities, uG (m.s-1) and uL (m.s-1), respectively, as follows: kLa = 55.58·uG1.26·uL0.08. The specific interfacial area, a (m-1), was determined as a = 3.61 × 103·uG0.902·uL -0.038 by measuring the gas hold-up (εG = 4.67·uG1.11·uL -0.05) and Sauter mean diameter, dS (mm), of the bubbles (dS = 7.78·uG0.207·uL - 0.008). The local mass transfer coefficient, kL (m.s-1), was then determined to be: kL = 15.40·uG0.354·uL0.118.

KW - Back Flow Cell Model

KW - Backmixing

KW - Bubble Characteristics

KW - Gas Hold-up

KW - Hydrodynamics

KW - Impinging-Jet Bubble Column

KW - Overall Mass Transfer Coefficient

KW - Ozone

KW - Specific Bubble Interfacial Area

UR - http://www.scopus.com/inward/record.url?scp=34547735611&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547735611&partnerID=8YFLogxK

U2 - 10.1080/01919510701451441

DO - 10.1080/01919510701451441

M3 - Article

VL - 29

SP - 245

EP - 259

JO - Ozone: Science and Engineering

JF - Ozone: Science and Engineering

SN - 0191-9512

IS - 4

ER -