Dynamic Foam Characteristics during Cultivation of Arthrospira platensis

This study is aimed at understanding the serious foaming problems during microalgal cultivation in industrial raceway ponds by studying the dynamic foam properties in Arthrospira platensis cultivation. A. platensis was cultivated in a 4 L bowl bioreactor for 4 days, during which the foam height abov...

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Bibliographic Details
Published in:Bioengineering (Basel) 2022-06, Vol.9 (6), p.257
Main Authors: Kubar, Ameer Ali, Ali, Amjad, Kumar, Santosh, Huo, Shuhao, Ullah, Muhammad Wajid, Alabbosh, Khulood Fahad Saud, Ikram, Muhammad, Cheng, Jun
Format: Article
Language:English
Subjects:
Adsorption
Algae
Aquatic microorganisms
Arthrospira platensis
Bioengineering
Bioreactors
Bubbles
Carbon dioxide
Cultivation
flow rate
Flow velocity
foam
Foaming
Morphology
photobioreactor
Software
stability
Surface tension
temperature
Temperature effects
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Summary:This study is aimed at understanding the serious foaming problems during microalgal cultivation in industrial raceway ponds by studying the dynamic foam properties in Arthrospira platensis cultivation. A. platensis was cultivated in a 4 L bowl bioreactor for 4 days, during which the foam height above the algal solution increased from 0 to 30 mm with a bubble diameter of 1.8 mm, and biomass yield reached 1.5 g/L. The algal solution surface tension decreased from 55 to 45 mN/m, which favored the adsorption of microalgae on the bubble to generate more stable foams. This resulted in increased foam stability (FS) from 1 to 10 s, foam capacity (FC) from 0.3 to 1.2, foam expansion (FE) from 15 to 43, and foam maximum density (FMD) from 0.02 to 0.07. These results show a decrease in CO2 flow rate and operation temperature when using the Foamscan instrument, which minimized the foaming phenomenon in algal solutions to a significantly lower and acceptable level.
ISSN:2306-5354
2306-5354
DOI:10.3390/bioengineering9060257