Hydrodynamic characteristics of a spinning sparger, external loop airlift bioreactor

1993 ◽  
Vol 71 (3) ◽  
pp. 419-425 ◽  
Author(s):  
Randall D. Fraser ◽  
G. A. Hill
Keyword(s):  
Airlift Bioreactor ◽  
Hydrodynamic Characteristics ◽  
External Loop

Mixing times in an external-loop airlift bioreactor with static mixers

1996 ◽  
Vol 16 (2-3) ◽  
pp. 145-153 ◽  
Author(s):  
M. Gavrilescu ◽  
R.-V. Roman
Keyword(s):  
Airlift Bioreactor ◽  
Mixing Times ◽  
Static Mixers ◽  
External Loop

Deactivation kinetics of immobilized glucose oxidase for production of calcium gluconate in an external loop airlift bioreactor

2004 ◽  
Vol 22 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Jie Bao ◽  
Kenichi Koumatsu ◽  
Keiji Furumoto ◽  
Makoto Yoshimoto ◽  
Kimitoshi Fukunaga ◽  
...  
Keyword(s):  
Glucose Oxidase ◽  
Calcium Gluconate ◽  
Airlift Bioreactor ◽  
External Loop ◽  
Deactivation Kinetics ◽  
Immobilized Glucose Oxidase ◽  
Kinetics Of

scholarly journals AIRLIFT BIOREACTOR FLUID-DYNAMIC CHARACTERIZATIONFOR THE CULTIVATION OF SHEAR STRESS SENSITIVEMICROORGANISMS

2015 ◽  
Vol 5 (2) ◽  
pp. 639-651 ◽  
Author(s):  
Márcio José Rossi ◽  
FX Nascimento ◽  
AJ Giachini ◽  
VL Oliveira ◽  
A Furigo Jr
Keyword(s):  
Shear Stress ◽  
Ectomycorrhizal Fungi ◽  
Oxygen Transfer ◽  
Fluid Dynamic ◽  
Experimental Studies ◽  
Ectomycorrhizal Fungus ◽  
Airlift Bioreactor ◽  
External Loop ◽  
Airlift Bioreactors ◽  
Superficial Gas Velocity

Airlift bioreactors are considered very efficient for aerobic cultivation of microorganisms. In particular, for the cultivation of filamentous fungi, where low shear rates may be required. In this context, the main aim of this study was to design an airlift bioreactor built with an external loop, adequate for biomass production of microbial organisms, including ectomycorrhizal fungi. A 5-L airlift bioreactor was constructed and experimental studies performed under an air-salt solution system (0.15 mol/L NaCl), in order to characterize the reactor´s fluid-dynamic in relation to the superficial gas velocity (Ug) in the range of 0.001 to 0.020 m/s. In order to evaluate the performance of the reactor, a preliminary assay was conducted with the ectomycorrhizal fungus Rhizopogonnigrescens. Better gas separationreflected in better liquid circulation and higher oxygen transfer (0.0197 1/s at 1 vvm) when compared to an operating, 2.3-L prototype airlift. According to this study, volumetric coefficients for oxygen transfer (kLa) up to 0.020 1/s (specific airflow rates of 1.0 vvm) are sufficient to promote the growth of shear stress sensitive microorganisms, such as ectomycorrhizal fungi.

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