Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327511
Type: Artigo
Title: Hydrodynamics And Mass Transfer In Bubble Column, Conventional Airlift, Stirred Airlift And Stirred Tank Bioreactors, Using Viscous Fluid: A Comparative Study
Author: de Jesus
Sergio S.; Neto
Joao Moreira; Maciel Filho
Rubens
Abstract: The performance of four bioreactors (bubble column, concentric tube airlift, concentric tube stirred airlift, and mechanically stirred tank) were evaluated in this study in terms of the hydrodynamics and mass transfer, using viscous a Newtonian fluid (glycerol 65%) and a non-Newtonian fluid (xanthan 0.25%). The experimental results showed that the gas holdup and mass transfer coefficient were higher in the stirred airlift and stirred tank, on the other hand these reactors had high shear rates. In relation to power consumption, lower values were obtained in the bubble column and airlift bioreactors. In a viscous medium in which microorganisms or shear-sensitive cells are used, the use of airlift bioreactors may be the best choice for presenting a low shear environment and a reasonable oxygen transfer rate, in addition to the low power consumption. On the other hand, if the process involves microorganisms that require high oxygen rates, a stirred airlift bioreactor may be the best choice. (C) 2016 Elsevier B.V. All rights reserved.
Subject: Bioreactors
Hydrodynamics
Mass Transfer
Newtonian Fluids
Non-newtonian Fluids
Editor: Elsevier Science BV
Amsterdam
Rights: fechado
Identifier DOI: 10.1016/j.bej.2016.11.019
Address: http://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S1369703X16303254?via%3Dihub
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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