Effect of hydrodynamic conditions in a model of cultivation for a hybrid tubular photobioreactor producing microalgae

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F22%3A00358521" target="_blank" >RIV/68407700:21220/22:00358521 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of hydrodynamic conditions in a model of cultivation for a hybrid tubular photobioreactor producing microalgae

Original language description

Mixing the culture medium in photobioreactors producing microalgal biomass is a key factor for improving the cultivation process and overall production. Appropriate mixing allows uniform access of microalgae cells to nutrients and light radiation. In this study, a 3D numerical model simulating the hydrodynamic conditions in a hybrid horizontal tubular photobioreactor was developed to investigate in detail the mixing of the culture medium under different operating conditions. The hydrodynamic model was experimentally validated on a pilot photobioreactor processing 11.7 m3 of culture medium. Using the developed hydrodynamic model, it is possible to simulate the movement of microalgae cells in the transparent tubes of the photobioreactor. The cell trajectory from the hydrodynamic model was then integrated into a biokinetic model that can simulate the effect of mixing intensity on the light distribution in the culture medium and subsequently on the biomass production from microalgae itself. The results of the numerical simulations showed that when the flow rate of the culture medium is increased, the mixing in the transparent tubes becomes more intense and the microalgae cells are thus more frequently exposed to incident light. The results of the numerical simulations were validated by experimental measurements. By intensifying mixing, microalgae cells can be irradiated more efficiently, leading to an increase in biomass production from microalgae. The developed multiphysics model, which links hydrodynamic and biokinetic models, can be used to optimize the design and operational parameters of existing cultivation systems or to design new photobioreactors.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů