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Strengthening mass transfer with the Tesla-valve baffles to increase the biomass yield of Arthrospira platensis in a column photobioreactor.
- Source :
-
Bioresource technology [Bioresour Technol] 2021 Jan; Vol. 320 (Pt A), pp. 124337. Date of Electronic Publication: 2020 Oct 31. - Publication Year :
- 2021
-
Abstract
- In this study, the Tesla-valve (TV) baffles were used to optimize the flow field in a column photobioreactor (PBR) in order to promote mass transfer of CO <subscript>2</subscript> gas in the solution. The TV baffles were composed of many tilted plates with central holes and curved arcs facing downwards, installed along inner rising section of the column PBR. Many clockwise and anti-clockwise vortices were generated during the rising flow while passing through proposed TV baffles. An optimum TV baffle structure (30° plate angle, 8 cm arc width) decreased mixing time by 36.4% and increased the mass transfer coefficient by 50%. The TV baffles supported the movement of the A.platensis cells between light and dark regions to enhance their photochemical efficiency Ď•PSII by 24.6% and Fv/Fm by 12.7%. Therefore, the biomass yield increased by 28.1% and exhibited an increased helix pitch and trichome length in comparison with traditional column PBR without baffles.<br /> (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Subjects :
- Biomass
Photobioreactors
Microalgae
Spirulina
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 320
- Issue :
- Pt A
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 33157436
- Full Text :
- https://doi.org/10.1016/j.biortech.2020.124337