LAPSE:2023.2949
Published Article
LAPSE:2023.2949
Gas Dispersion in Non-Newtonian Fluids with Mechanically Agitated Systems: A Review
February 21, 2023
Gas dispersion in non-Newtonian fluids is encountered in a broad range of chemical, biochemical, and food industries. Mechanically agitated vessels are commonly employed in these processes because they promote high degree of contact between the phases. However, mixing non-Newtonian fluids is a challenging task that requires comprehensive knowledge of the mixing flow to accurately design stirred vessels. Therefore, this review presents the developments accomplished by researchers in this field. The present work describes mixing and mass transfer variables, namely volumetric mass transfer coefficient, power consumption, gas holdup, bubble diameter, and cavern size. It presents empirical correlations for the mixing variables and discusses the effects of operating and design parameters on the mixing and mass transfer process. Furthermore, this paper demonstrates the advantages of employing computational fluid dynamics tools to shed light on the hydrodynamics of this complex flow. The literature review shows that knowledge gaps remain for gas dispersion in yield stress fluids and non-Newtonian fluids with viscoelastic effects. In addition, comprehensive studies accounting for the scale-up of these mixing processes still need to be accomplished. Hence, further investigation of the flow patterns under different process and design conditions are valuable to have an appropriate insight into this complex system.
Keywords
gas dispersion, gas holdup, mass transfer coefficient, Mixing, non-Newtonian fluids
Suggested Citation
Lins Barros P, Ein-Mozaffari F, Lohi A. Gas Dispersion in Non-Newtonian Fluids with Mechanically Agitated Systems: A Review. (2023). LAPSE:2023.2949
Author Affiliations
Lins Barros P: Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada [ORCID]
Ein-Mozaffari F: Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada [ORCID]
Lohi A: Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada [ORCID]
Journal Name
Processes
Volume
10
Issue
2
First Page
275
Year
2022
Publication Date
2022-01-30
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr10020275, Publication Type: Review
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LAPSE:2023.2949
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doi:10.3390/pr10020275
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Feb 21, 2023
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CC BY 4.0
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