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Determination of volumetric gas–liquid mass transfer coefficient of carbon monoxide in a batch cultivation system using kinetic simulations

Nulee Jang, Muhammad Yasin, Shinyoung Park, Robert Lovitt, In Seop Chang

Bioresource Technology, Volume: 239, Pages: 387 - 393

Swansea University Author: Robert Lovitt

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DOI (Published version): 10.1016/j.biortech.2017.05.023

Abstract

A mathematical model of microbial kinetics was introduced to predict the overall volumetric gas–liquid mass transfer coefficient (kLa) of carbon monoxide (CO) in a batch cultivation system. The cell concentration (X), acetate concentration (Cace), headspace gas (Nco and Nco2), dissolved CO concentra...

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Published in: Bioresource Technology
ISSN: 09608524
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa33250
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Abstract: A mathematical model of microbial kinetics was introduced to predict the overall volumetric gas–liquid mass transfer coefficient (kLa) of carbon monoxide (CO) in a batch cultivation system. The cell concentration (X), acetate concentration (Cace), headspace gas (Nco and Nco2), dissolved CO concentration in the fermentation medium (Cco), and mass transfer rate (R) were simulated using a variety of kLa values. The simulated results showed excellent agreement with the experimental data for a kLa of 13 /hr. The Cco values decreased with increase in cultivation times, whereas the maximum mass transfer rate was achieved at the mid-log phase due to vigorous microbial CO consumption rate higher than R. The model suggested in this study may be applied to a variety of microbial systems involving gaseous substrates.
Keywords: Carbon monoxide; Gas–liquid mass transfer; Kinetic simulation; Eubacterium limosum KIST612; Batch cultivation
College: Faculty of Science and Engineering
Start Page: 387
End Page: 393

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