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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hydrodynamics and mass transfer in bubble column, conventional airlift, stirred airlift and stirred tank bioreactors, using viscous fluid: A comparative study

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Author(s):
de Jesus, Sergio S. ; Neto, Joao Moreira ; Maciel Filho, Rubens
Total Authors: 3
Document type: Journal article
Source: Biochemical Engineering Journal; v. 118, p. 70-81, FEB 15 2017.
Web of Science Citations: 12
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. (AU)

FAPESP's process: 10/03764-3 - Design and construction of agitated photobioreactor airlift for lipids and carbohydrates production
Grantee:Sergio Santos de Jesus
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 10/04903-7 - Design and construction of agitated photobioreactor airlift for biodiesel production
Grantee:Rubens Maciel Filho
Support type: Regular Research Grants
FAPESP's process: 08/57873-8 - An integrated process for total bioethanol production and zero CO2 emission
Grantee:Rubens Maciel Filho
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants