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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.)

Influence of impeller type on hydrodynamics and gas-liquid mass-transfer in stirred airlift bioreactor

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de Jesus, Sergio S. [1] ; Moreira Neto, Joao [1] ; Santana, Aline [1] ; Maciel Filho, Rubens [1]
Total Authors: 4
[1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Control, BR-13083852 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: AICHE JOURNAL; v. 61, n. 10, p. 3159-3171, OCT 2015.
Web of Science Citations: 14

The influence of impeller type in a mechanically stirred airlift bioreactor was analyzed in relation to the non-Newtonian viscous fluids. The agitation was carried out through a marine impeller (axial impeller) and a paddle impeller (radial impeller) located along with the gas sparger in the region comprised by the riser. The bioreactor was sparged with air under different velocities (0.036-0.060 m s(-1)). Carboxymethylcellulose 1.94% and xanthan 1.80% were used as a fluid model. The gas holdup and volumetric mass-transfer coefficient increased in up to five and three times, respectively, when compared to a conventional airlift bioreactor; however, better results were obtained when the straight paddle impeller type was used. The results suggest that the studied bioreactor can be used successfully in viscous fluid, and it can be more efficient than conventional airlift bioreactors. The results obtained suggest the use of radial impellers. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 3159-3171, 2015 (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: 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
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