Jump to ContentJump to Main Navigation
Show Summary Details

International Journal of Chemical Reactor Engineering

Ed. by de Lasa, Hugo / Xu, Charles Chunbao

IMPACT FACTOR increased in 2015: 0.759

SCImago Journal Rank (SJR) 2015: 0.276
Source Normalized Impact per Paper (SNIP) 2015: 0.473
Impact per Publication (IPP) 2015: 0.636

See all formats and pricing


30,00 € / $42.00 / £23.00

Get Access to Full Text

Characteristics of Local Flow Dynamics and Macro-Mixing in Airlift Column Reactors for Reliable Design and Scale-Up

Farouza Gumery1 / Farhad Ein-Mozaffari2 / Yaser Dahman3

1Ryerson University,

2Ryerson University,

3Ryerson University,

Citation Information: International Journal of Chemical Reactor Engineering. Volume 7, Issue 1, ISSN (Online) 1542-6580, DOI: https://doi.org/10.2202/1542-6580.2081, October 2009

Publication History

Published Online:

There has been tremendous development within mixing operations in industry. Incomplete knowledge of this process caused serious economic losses to process industries. For optimum yields and the economic potential that goes with better understanding of mixing, research in this field continues to grow. The major forms of mixing in industry are either by mechanical or pneumatic agitation. Airlift bioreactors achieve mixing through pneumatic agitation and have gained attention over two decades for their fluid dynamic characteristics and low power consumption. It has been widely applied in bioprocess industries for production of biochemicals, to wastewater treatment in which the performance of this reactor has been overwhelming with respect to its production levels as compared to the conventional mechanical agitation.In this review, mixing through mechanical and pneumatic agitation is compared. An extensive literature is distilled from various investigators on the hydrodynamics and mixing characteristics of airlift bioreactors. This review has emphasis on factors that affect mixing such as the geometrical parameters of the vessel, gas flow rate, properties of the liquid medium, sparger design and measuring techniques employed. In an attempt to understand process related issues, sophisticated advances in the measuring techniques provides more insight into mixing in this reactor. Thus extensive correlations have been proposed by various investigators to predict the hydrodynamic and mixing parameters. Some design modifications proposed by several scholars have also been reviewed.

Keywords: Bioreactors; hydrodynamics; liquid velocity; gas holdup; sparger design; macro-mixing

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

Jamshid Behin and Negin Farhadian
Experimental Thermal and Fluid Science, 2013, Volume 51, Page 244
Masroor Mohajerani, Mehrab Mehrvar, and Farhad Ein-Mozaffari
The Canadian Journal of Chemical Engineering, 2012, Volume 90, Number 6, Page 1612
Sagar S. Deshpande, Mahesh T. Dhotre, and Salih Guentay
Chemical Engineering Science, 2011

Comments (0)

Please log in or register to comment.