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Advanced Computational Fluid Dynamics Study of the Dissolved Oxygen Concentration within a Thin-Layer Cascade Reactor for Microalgae Cultivation
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SYSNO ASEP 0548199 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Advanced Computational Fluid Dynamics Study of the Dissolved Oxygen Concentration within a Thin-Layer Cascade Reactor for Microalgae Cultivation Author(s) Petera, K. (CZ)
Papáček, Štěpán (UTIA-B) ORCID
González, C.I. (ES)
Fernández-Sevilla, J.M. (ES)
Fernández, F.G.A. (ES)Number of authors 5 Article number 7284 Source Title Energies. - : MDPI
Roč. 14, č. 21 (2021)Number of pages 11 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords Microalgae ; Photosynthesis ; Thin-layer cascade bioreactor ; Dissolved oxygen ; CFD ; Mass transfer Subject RIV BC - Control Systems Theory OECD category Bioprocessing technologies (industrial processes relying on biological agents to drive the process) biocatalysis, fermentation R&D Projects GA19-05872S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UTIA-B - RVO:67985556 UT WOS 000718616900001 EID SCOPUS 85118804196 DOI 10.3390/en14217284 Annotation High concentration of dissolved oxygen within microalgae cultures reduces the performance of corresponding microalgae cultivation system (MCS). The main aim of this study is to provide a reliable computational fluid dynamics (CFD)-based methodology enabling to simulate two relevant phenomena governing the distribution of dissolved oxygen within MCS: (i) mass transfer through the liquid–air interface and (ii) oxygen evolution due to microalgae photosynthesis including the inhibition by the same dissolved oxygen. On an open thin-layer cascade (TLC) reactor, a benchmark numerical study to assess the oxygen distribution was conducted. While the mass transfer phenomenon is embedded within CFD code ANSYS Fluent, the oxygen evolution rate has to be implemented via user-defined function (UDF). To validate our methodology, experimental data for dissolved oxygen distribution within the 80 meter long open thin-layer cascade reactor are compared against numerical results. Moreover, the consistency of numerical results with theoretical expectations has been shown on the newly derived differential equation describing the balance of dissolved oxygen along the longitudinal direction of TLC.We argue that employing our methodology, the dissolved oxygen distribution within any MCS can be reliably determined in silico, and eventually optimized or/and controlled. Workplace Institute of Information Theory and Automation Contact Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Year of Publishing 2022 Electronic address https://www.mdpi.com/1996-1073/14/21/7284
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