Cited by 15Algal biology and biofuel productionFluid Dynamics and MixingAquatic Ecosystems and Phytoplankton Dynamics

Potential of a liquid foam-bed photobioreactor for microalgae cultivation

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Janoska, Agnes, Andriopoulos, Vasilis, Wijffels, Rene H., Janssen, Marcel·2018·Algal Research

Abstract

The liquid foam-bed photobioreactor is a novel photobioreactor for microalgae cultivation. A mathematical model was developed to evaluate its potential, and to optimize the design and operation of a large-scale unit. This model describes light limited microalgal growth in a rising foam column in a foam-bed photobioreactor, which is continuously operated at constant biomass density. The microalgae-containing liquid is recirculated from the bottom of the reactor and dispersed equally on the top of the foam column, in order to ensure homogenous microalgae distribution and a wet and stable foam. The model combines calculations of liquid fraction gradient, light penetration, microalgal growth, and gas transfer in the foam-bed. The liquid fraction and light model was experimentally validated. The areal productivity of a 5 cm deep foam-bed photobioreactor operated at 30 g L−1 microalgae and 1500 μmol photons m−2 s−1 was estimated to be 67.7 g m−2 d−1. This productivity is slightly lower compared to what is achievable in flat panels, which is related to light scattering in the foam-bed. Nevertheless, the advantages of the foam-bed photobioreactor, such as high gas transfer rate and high biomass densities, were confirmed with the simulations. In addition, it was calculated that a CO2 uptake efficiency of 97% can be obtained ensuring minimal CO2 loss. These benefits result in reduced gas supply requirement and reduced energy required for downstream processing. The total energy required for the production and separation of 1 g biomass in liquid foam-beds is only 8.5% of what is required in flat panels with suspended biomass. These results highlight the potential of foam-bed photobioreactors for large scale application for microalgae production.

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Crossref · 10.1016/j.algal.2018.09.029

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  • The DA can be of practical importance when the light source of a photobioreactor is diffuse or for modeling special photobioreactors like foam bed reactors where the foam strongly scatters light.

    “However, it was shown that the DA can be of practical importance when the light source of a photobioreactor is diffuse [21,201] or for modeling special photobioreactors like foam bed reactors where the foam strongly scatters light [221].”

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Research works printed but not linked: 1

  1. A.J. Welch, M.J. Van Gemert (Eds.), Optical-thermal response of laser-irradiated tissue, second ed., Springer, Dordrecht, 2011.

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Authors
Janoska, A., Andriopoulos, V., Wijffels, R. H., & Janssen, M.
Affiliations
Wageningen University & Research (NL)
Corresponding author
Janoska, Agnes
Venue
Algal Research
Publisher
Elsevier BV
Published
2018-12
Volume
36
Pages
193-208
ISSN
2211-9264 (ISSN-L)
OpenAlex
W2899055951
Cited by
15
References
41
Citations by year
2025: 1 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 1
FWCI
0.29
Type
journal article
Language
en
Open access
Locations
  • Algal Research (publishedVersion, cc-by-nc-nd)
  • Socio-Environmental Systems Modeling (acceptedVersion, cc-by-nc-nd)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by-nc-nd)
  • Data Archiving and Networked Services (DANS) (submittedVersion, cc-by-nc-nd)
Funders
Seventh Framework Programme (613588)
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 cultivation, foam column, light penetration, gas transfer, areal productivity, energy consumption, flat panel photobioreactor

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