High-density algal photobioreactors using light-emitting diodes
Abstract
Lack of high-density algal photobioreactors (PBR) has been a limitation in exploiting the biotechnological potential of algae. Recent developments of highly efficient light-emitting diodes (LED using gallium aluminum arsenide chips) have made the development of a small LED-based PBR possible. We have calculated theoretical values of gas mass transfer requirements and light-intensity requirement to support high-density algal cultures for the 680 nm monochromatic red light from LED as a light source. A prototype PBR has been designed based on these calculations. A cell concentration of more than 2 x 10(9) cells/mL (more than 6.6% v%sol;v), cell doubling times as low as 12 h, and an oxygen production rate as high as 10 mmol oxygen/L culture/h were achieved using on-line ultrafiltration to periodically provide fresh medium. (c) 1994 John Wiley & Sons, Inc.
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Gas bubbles in gas-sparged photobioreactors can scatter light.
“In principle, gas bubbles in gas-sparged photobioreactors can scatter light [82-84].”
From Modeling and Simulation of Photobioreactors with Computational Fluid Dynamics—A Comprehensive Review (2022) · cites this paper as [82]
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References 46 · Cited by 177
- Authors
- Lee, C., & Palsson, B. Ø.
- Affiliations
- University of Michigan (US)
- Corresponding author
- Palsson, Bernhard Ø.
- Venue
- Biotechnology and Bioengineering
- Publisher
- Wiley
- Published
- 1994-11-20
- Volume
- 44
- Issue
- 10
- Pages
- 1161-1167
- ISSN
- 0006-3592 (ISSN-L)
- 1097-0290
- OpenAlex
- W2149448575
- Cited by
- 177
- References
- 46
- Citations by year
- 2026: 3 · 2024: 3 · 2023: 5 · 2022: 4 · 2021: 7 · 2020: 5 · 2019: 7 · 2018: 14 · 2017: 7 · 2016: 12 · 2015: 15 · 2014: 17 · 2013: 17 · 2012: 9
- FWCI
- 4.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biotechnology and Bioengineering (publishedVersion)
- PubMed (publishedVersion)
- Deep Blue (University of Michigan) (submittedVersion)
- 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
- algal photobioreactors, light-emitting diodes, AlGaAs, red light, gas mass transfer, oxygen production, cell doubling time
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