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International Journal of Chemical Engineering
Volume 2012 (2012), Article ID 984827, 12 pages
Research Article

Effect of Mixing on Microorganism Growth in Loop Bioreactors

1Department of Process Engineering and Applied Sciences, Dalhousie University, Halifax NS, Canada B3J 2X4
2Process Engineering Programme of The University of Trinidad and Tobago, Point Lisas Campus, Brechin Castle, Couva, Trinidad and Tobago

Received 27 January 2012; Accepted 24 May 2012

Academic Editor: Shaliza Binti Ibrahim

Copyright © 2012 A. M. Al Taweel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The impact of mixing on the promotion of microorganism growth rate has been analyzed using a multiphase forced-circulation pipe-loop reactor model capable of identifying conditions under which it is possible to convert natural gas into Single-Cell Protein. The impact of mixing in the interphase mass transfer was found to exert a critical role in determining the overall productivity of the bioreactor, particularly at the high cell loadings needed to reduce the capital costs associated with the large-scale production needed for the production of relatively low-value SCP in a sustainable manner.