Hydrodynamic study of an internal airlift reactor for microalgae culture
| Autor: | Assaad Zoughaib, Denis Clodic, Ana Rengel, Dominique Dron |
|---|---|
| Přispěvatelé: | CEP/Paris, Centre Énergétique et Procédés (CEP), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), The authors thank to the group 'Nouvelles Stratégies Energétiques' for financial support. |
| Rok vydání: | 2011 |
| Předmět: |
0106 biological sciences
Airlift reactor Biomass 02 engineering and technology 01 natural sciences Applied Microbiology and Biotechnology Bioreactors 020401 chemical engineering 010608 biotechnology [SDE.DEV-DUR]Environmental Sciences/domain_sde.dev-dur Air flow rate Microalgae [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering 0204 chemical engineering Ecology Air Airlift Hydrodynamic General Medicine Mechanics Models Theoretical 6. Clean water Hydrodynamics Environmental science Air bubble Liquid circulation Biotechnology |
| Zdroj: | Applied Microbiology and Biotechnology Applied Microbiology and Biotechnology, Springer Verlag, 2012, 93 (1), pp.117-129. ⟨10.1007/s00253-011-3398-9⟩ |
| ISSN: | 1432-0614 0175-7598 |
| Popis: | International audience; Internal airlift reactors are closed systems considered today for microalgae cultivation. Several works have studied their hydrodynamics but based on important solid concentrations, not with biomass concentrations usually found in microalgae cultures. In this study, an internal airlift reactor has been built and tested in order to clarify the hydrodynamics of this system, based on microalgae typical concentrations. A model is proposed taking into account the variation of air bubble velocity according to volumetric air flow rate injected into the system. A relationship between riser and downcomer gas holdups is established, which varied slightly with solids concentrations. The repartition of solids along the reactor resulted to be homogenous for the range of concentrations and volumetric air flow rate studied here. Liquid velocities increase with volumetric air flow rate, and they vary slightly when solids are added to the system. Finally, liquid circulation time found in each section of the reactor is in concordance with those employed in microalgae culture. |
| Databáze: | OpenAIRE |
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