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

Monica Oliveira; X. Ni

doi:10.1016/j.cej.2004.01.002

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

Monica Oliveira, X. Ni

Mechanical And Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

289 Downloads (Pure)

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.

Original language	English
Pages (from-to)	59-66
Journal	Chemical Engineering Journal
Volume	99
Issue number	1
DOIs	https://doi.org/10.1016/j.cej.2004.01.002
Publication status	Published - 17 May 2004

Keywords

fluid oscillation
mass transfer
bubble size
gas holdup
special interfacial area

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10.1016/j.cej.2004.01.002

Oliveira M Effect of hydrodynamics on mass transfer in a gas liquid oscillatory baffled column May 2004Final published version, 266 KB

http://www.sciencedirect.com/science/journal/13858947/99/1

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Cite this

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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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AU - Ni, X.

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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.

KW - fluid oscillation

KW - mass transfer

KW - bubble size

KW - gas holdup

KW - special interfacial area

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