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@INPROCEEDINGS{Loomba:827134,
author = {Loomba, Varun and Huber, Gregor and von Lieres, Eric},
title = {{C}omputational analysis of hydrodynamics and light
distribution in photo-bioreactors for algae biomass
production},
school = {RWTH Aachen},
reportid = {FZJ-2017-01332},
year = {2016},
abstract = {Microalgae can be directly used in health food or as
bio-filters for waste water treatment. They also have
numerous commercial applications in cosmetics, aquaculture
and chemical industry as a source of highly valuable
molecules, e.g., polyunsaturated fatty acids [1]. Moreover,
they are increasingly recognized as a promising source for
biodiesel production [2]. To realize the full potential of
microalgae, optimal operating conditions for their
cultivation in photo-bioreactors (PBR) need to be identified
in order to maximize productivity, lipid content, and
efficiency of photosynthesis. The most important parameters
affecting PBR performance are reactor shape, light intensity
distribution, algae growth and other metabolic
properties.The presented study aims at analyzing
sensitivities to these parameters using Computational Fluid
Dynamics (CFD) simulations with the COMSOL Multiphysics
software. Specifically, flat panel photo-bioreactors with
turbulent mixing due to air sparging and one-sided lighting
are studied. First, flow profiles of both liquid and gas
phases are computed using the Euler-Euler approach for
analyzing the air sparging and detecting potential dead
zones. Then, light intensity distributions are calculated,
based on absorption and light scattering by algae and gas
bubbles. Subsequently, the paths of individual algae are
traced, and the environmental conditions they are exposed to
are recorded over time, in particular aeration and light
intensity. Statistical analysis of the particle traces is
performed combining the light exposure with an empirical
growth model for algae. Results of the above described
simulation stages will be presented and discussed.[1]
Spolaore et al.: Commercial applications of microalgae, J.
Biosci. Bioeng. 101 (2006): 87-96.[2] Bitog et al.:
Application of computational fluid dynamics for modeling and
designing photobioreactors for microalgae production: A
review, Comput. Electron. Agr. 76 (2011): 131-147.},
month = {Sep},
date = {2016-09-26},
organization = {9. Bundesalgenstammtisch 2016, Jülich
(Germany), 26 Sep 2016 - 27 Sep 2016},
subtyp = {Other},
cin = {IBG-2 / IBG-1},
cid = {I:(DE-Juel1)IBG-2-20101118 / I:(DE-Juel1)IBG-1-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/827134},
}