Enhancing microalgal biomass productivity with an optimized flow field generated by double paddlewheels in a flat plate photoreactor with CO2 aeration based on numerical simulation
Open accessAbstract
Computational fluid dynamics were used to analyze the flash light effect and CO 2 bubble behavior in an optimized flow field generated by double paddlewheels in a flat plate photoreactor to enhance microalgal biomass productivity. The increased D/w ratio significantly enhanced the average turbulent kinetic energy and flash cycle frequency. However, the effects became weak when the D/w ratio was over 0.67. Appliance of double paddlewheels increased flash cycle frequency from 0.035 to 0.121 Hz and increased light time ratio from 8.3% to 31.5%. Meanwhile, the bubble dynamic behavior was characterized using population balance model. The average bubble size reduced by 24.4% and the bubble rising velocity reduced by 10.6%, which facilitated CO 2 mixing and mass transfer in microalgal solution. Therefore, biomass accumulation of microalgae Chlorella in the photoreactor with double paddlewheels increased by 62.3% under 15% CO 2.
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CFD simulations have been employed to optimize hydrodynamic characteristics and aeration rates within photobioreactor systems, enhancing CO2 capture efficiency.
“Additionally, CFD simulations have been employed to optimize the hydrodynamic characteristics and aeration rates within PBR systems, enhancing CO 2 capture efficiency [145,146].”
From A Review of Algae-Based Carbon Capture, Utilization, and Storage (Algae-Based CCUS) (2024) · cites this paper as [146]
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- Authors
- Xu, J., Cheng, J., Lai, X., Zhang, X., Yang, W., Park, J.-Y., Kim, H., & Xu, L.
- Affiliations
- State Key Laboratory of Clean Energy Utilization (CN)
- Korea Institute of Energy Research (KR)
- Corresponding author
- Cheng, Jun
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2020-10
- Volume
- 314
- Pages
- 123762
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W3039870587
- Cited by
- 30
- References
- 36
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 9 · 2023: 2 · 2022: 8 · 2021: 3 · 2020: 1
- FWCI
- 0.69
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Bioresource Technology (acceptedVersion)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- Science and Technology Department of Zhejiang Province
- Ministry of Science and Technology of the People's Republic of China
- 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
- microalgae productivity, flow field optimization, population balance model, bubble size distribution, bubble rise velocity, CO2 mass transfer, Chlorella, turbulent kinetic energy, computational fluid dynamics
- MeSH terms
- Carbon Dioxide, Chlorella, Photobiology, Biomass, Microalgae, Photobioreactors
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