Boosting photo-biochemical conversion and carbon dioxide bio-fixation of Chlorella vulgaris in an optimized photobioreactor with airfoil-shaped deflectors
Abstract
Aiming at ameliorating the poor hydrodynamic regimes and uneven light distribution in the conventional airlift flat-plate photobioreactor (AFP-PBR), a novel PBR with static airfoil-shaped deflectors (ASD-PBR) is proposed in this study to boost the microalgal biomass manipulation and hence the photo-biochemical conversion. The ASD module accelerated the circulation of microalgal suspension from the center to two sides with the help of bubbling so that the microalgal cells got more opportunities to access the light source. Compared with the control PBR, the solution velocity along the incident light direction increased by 114.8% in the newly-proposed ASD-PBR. Furthermore, the ASD module also served as a static mixer, which resulted in an increment of 11.5% in mass transfer coefficient and a decrement of 21.4% in mixing time. The amended hydrodynamic characteristics eventually contributed to an improvement of 18.3% and 10.9% in the maximum algal biomass yield and CO 2 fixation rate, respectively.
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Fluid dynamics optimizations within photobioreactors, such as aerodynamic airfoil-shaped deflectors and three-dimensional tangential swirl plates, improve fluid flow within the reactor.
“Fluid dynamics optimizations within PBRs, such as incorporating aerodynamic airfoil-shaped deflectors and three-dimensional tangential swirl plates, improve fluid flow within the reactor [143,144].”
From A Review of Algae-Based Carbon Capture, Utilization, and Storage (Algae-Based CCUS) (2024) · cites this paper as [143]
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- Authors
- Fu, J., Huang, Y., Liao, Q., Zhu, X., Xia, A., Zhu, X., & Chang, J.-S.
- Affiliations
- Chongqing University (CN)
- Tunghai University (TW)
- Corresponding author
- Liao, Qiang
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2021-10
- Volume
- 337
- Pages
- 125355
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W3170771262
- Cited by
- 40
- References
- 37
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 9 · 2023: 13 · 2022: 8 · 2021: 3
- FWCI
- 1.55
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (51961165104, 52021004)
- Fundamental Research Funds for the Central Universities (2020CDJQY-A052)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Engineering › Biomedical Engineering › Fluid Dynamics and Mixing
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- Chlorella vulgaris, photobioreactors, airlift photobioreactor, microalgae cultivation, CO2 fixation, hydrodynamic mixing, light distribution, static mixer, mass transfer coefficient
- MeSH terms
- Carbon Dioxide, Biomass, Chlorella vulgaris, Microalgae, Photobioreactors
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