Effect of hydrodynamics on mass transfer in a gas-liquid oscillatory baffled column

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In this paper, we present an experimental study on mass transfer of oxygen into water in an oscillatory baffled column (OBC). The objective of this work is to establish the contribution of individual parameters, such as the size of bubbles and the gas holdup, to the overall volumetric mass transfer coefficient (kLa). Our results show that the gas holdup is the most important factor. The liquid-side mass transfer coefficient (kL) is calculated directly from the experimental measurements of gas holdup, Sauter mean diameter and kLa, and an increase of kL with D32 is observed. The results also show that, above a critical level of fluid oscillation, the mass transfer coefficients are mainly
governed by the oscillatory operating conditions, while independent of the type of gas sparger.
LanguageEnglish
Pages59-66
JournalChemical Engineering Journal
Volume99
Issue number1
DOIs
Publication statusPublished - 17 May 2004

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mass transfer
Mass transfer
Hydrodynamics
Gases
hydrodynamics
liquid
Liquids
gas
bubble
experimental study
oscillation
Oxygen
oxygen
Fluids
fluid
effect
Water
water

Keywords

  • fluid oscillation
  • mass transfer
  • bubble size
  • gas holdup
  • special interfacial area

Cite this

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title = "Effect of hydrodynamics on mass transfer in a gas-liquid oscillatory baffled column",
abstract = "In this paper, we present an experimental study on mass transfer of oxygen into water in an oscillatory baffled column (OBC). The objective of this work is to establish the contribution of individual parameters, such as the size of bubbles and the gas holdup, to the overall volumetric mass transfer coefficient (kLa). Our results show that the gas holdup is the most important factor. The liquid-side mass transfer coefficient (kL) is calculated directly from the experimental measurements of gas holdup, Sauter mean diameter and kLa, and an increase of kL with D32 is observed. The results also show that, above a critical level of fluid oscillation, the mass transfer coefficients are mainlygoverned by the oscillatory operating conditions, while independent of the type of gas sparger.",
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Effect of hydrodynamics on mass transfer in a gas-liquid oscillatory baffled column. / Oliveira, Monica; Ni, X.

In: Chemical Engineering Journal, Vol. 99, No. 1, 17.05.2004, p. 59-66.

Research output: Contribution to journalArticle

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AB - In this paper, we present an experimental study on mass transfer of oxygen into water in an oscillatory baffled column (OBC). The objective of this work is to establish the contribution of individual parameters, such as the size of bubbles and the gas holdup, to the overall volumetric mass transfer coefficient (kLa). Our results show that the gas holdup is the most important factor. The liquid-side mass transfer coefficient (kL) is calculated directly from the experimental measurements of gas holdup, Sauter mean diameter and kLa, and an increase of kL with D32 is observed. The results also show that, above a critical level of fluid oscillation, the mass transfer coefficients are mainlygoverned by the oscillatory operating conditions, while independent of the type of gas sparger.

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