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Enhancing microalgae production by installing concave walls in plate photobioreactors.
- Source :
-
Bioresource technology [Bioresour Technol] 2022 Feb; Vol. 345, pp. 126479. Date of Electronic Publication: 2021 Dec 02. - Publication Year :
- 2022
-
Abstract
- In order to optimize light distribution for promoting biomass growth rate of Chlorella pyrenoidosa, concave walls were installed in plate photobioreactors (PBR) to generate rotational flow field of microalgal solution circulated from top inlets to bottom outlets. Flow vortices in four corners of concave-wall PBR resulted in decreased mixing time and increased mass transfer coefficient. The CO <subscript>2</subscript> bio-fixation by C. pyrenoidosa increased by 27% and chlorophyll-a concentration enhanced by 18.5% in concave-wall PBR compared to those in control (flat-wall) PBR. The concave walls diverge light rays to enhance frontal light exposure and supply more light photons into interior regions of PBRs. The promotion in light distribution and vortex flow field with concave walls enhanced light and nutrients utilization by microalgal cells, leading to an increased biomass growth rate by 21%.<br /> (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Subjects :
- Biomass
Light
Photobioreactors
Chlorella
Microalgae
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 345
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 34864173
- Full Text :
- https://doi.org/10.1016/j.biortech.2021.126479