2014
DOI: 10.1002/apj.1846
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Effects of dual impeller system of Rushton turbine, concave disk turbine and their combinations on the performance of kojic acid fermentation by Aspergillus flavus Link 44‐1

Abstract: In the present work, the effects of dual impeller configurations comprising of Rushton turbine (RT) and Concave-bladed disk turbine (CD-6) on the oxygen transfer profile and fermentation performance of kojic acid production by Aspergillus flavus Link 44-1 was investigated. Batch cultivations of A. flavus Link 44-1 were performed in 2 L stirred tank bioreactor. The fermentations were conducted using different dual impeller systems; (1) RT-RT, (2) CD6-CD6, (3) RT-CD6, and (4) CD6-RT (bottom-top impeller). It was… Show more

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Cited by 5 publications
(2 citation statements)
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References 26 publications
(21 reference statements)
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“…Investigations of multistage configurations of radial (6-SBDT, BT-6, 4-straight blade disc turbine 4-SBDT, 6-curved blade disc turbine 6-CBDT, 6-arrowy blade disc turbine 6-ABDT, Smith turbine half pipe blades HDY675, hollow-type six-bladed concave disk turbine CD-6, and centripetal turbine CEPET) and down-pumping impellers (PROP, A315, 3-pitched blade impeller 3-PB, 3-blade hydrofoil impeller 3-HYDRO, and profiled triblade TRIB) in cultivation broth can be found with reactor liquid volumes reaching from V = 2-5 L [24,26] over V = 10-35 L [23,27] and up to V = 12-130 m 3 [25,28]. With the exception of Xia et al [23] who cultivated bacteria, in all other cases, the cultivation of fungi was investigated.…”
Section: Radial and Down-pumping Impellersmentioning
confidence: 99%
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“…Investigations of multistage configurations of radial (6-SBDT, BT-6, 4-straight blade disc turbine 4-SBDT, 6-curved blade disc turbine 6-CBDT, 6-arrowy blade disc turbine 6-ABDT, Smith turbine half pipe blades HDY675, hollow-type six-bladed concave disk turbine CD-6, and centripetal turbine CEPET) and down-pumping impellers (PROP, A315, 3-pitched blade impeller 3-PB, 3-blade hydrofoil impeller 3-HYDRO, and profiled triblade TRIB) in cultivation broth can be found with reactor liquid volumes reaching from V = 2-5 L [24,26] over V = 10-35 L [23,27] and up to V = 12-130 m 3 [25,28]. With the exception of Xia et al [23] who cultivated bacteria, in all other cases, the cultivation of fungi was investigated.…”
Section: Radial and Down-pumping Impellersmentioning
confidence: 99%
“…While Yang et al [25] adjusted, e.g., the rotational speed during cultivation, most other works are not doing this. Suhaili et al [26] showed again in their work that the prevailing conditions in the system, specifically the rheological behavior of the cultivation broth, significantly influence which impeller combination shows the best performance at specific points in time. While differences in, e.g., k L a might not be strongly enhanced by a certain impeller combination in the beginning of the cultivation, a significant difference might be visible towards the end.…”
Section: Radial and Down-pumping Impellersmentioning
confidence: 99%