Hydrodynamics Characterization of the Impact of Free-Moving Particles in an Air-Lift Membrane Bioreactor
| Autor: | Naila Bouayed, Chung-Hak Lee, Nicolas Dietrich, Christine Lafforgue, Christelle Guigui, Anthony Cavalier |
|---|---|
| Přispěvatelé: | Toulouse Biotechnology Institute (TBI), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea, Seoul National University [Seoul] (SNU), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Chemical Engineering Membrane fouling 02 engineering and technology General Chemistry Mechanics 021001 nanoscience & nanotechnology Membrane bioreactor [SDE.ES]Environmental Sciences/Environmental and Society Industrial and Manufacturing Engineering Lift (force) Membrane [CHIM.GENI]Chemical Sciences/Chemical engineering 020401 chemical engineering Particle Image Velocimetry Membranes Bioreactors (MBRs) Air-Lift Reactors (ALRs) hydrodynamics gas-liquid-solid Bioreactor 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Industrial and engineering chemistry research Industrial and engineering chemistry research, American Chemical Society, 2020, ⟨10.1021/acs.iecr.9b06749⟩ Industrial and engineering chemistry research, 2020, pp.7943-7954. ⟨10.1021/acs.iecr.9b06749⟩ |
| ISSN: | 0888-5885 1520-5045 |
| Popis: | International audience; Membrane fouling is one of the most investigated topics in the field of membrane processes because it is the main weakness that prevents membrane bioreactors (MBRs) from being widely applied. With a view to reducing membrane fouling, all the phenomena involved in the operation are worth understanding through a fine-tuned and deep examination. In the present paper, the study focused on the hydrodynamics in an airlift MBR with a flat sheet membrane, taking into account the application of a specific method for biofouling mitigation adding free moving particles in addition of bubbles injection. The application of this technique creates a complex three-phase gas-liquid-solid contactor in the MBR in terms of hydrodynamics.Therefore, the main objective of this work was to properly characterize, using a Particle Image Velocimetry (PIV) technique, such a system in order to clarify the potential effect of the addition of free moving solid particle on the hydrodynamics and the performances of the MBR. Three different shape of particle have been tested: beads, hollow cylinders and flat 22 sheets. Local hydrodynamic parameters, such as the liquid velocity, the liquid shear stress, or the bubble sizes and velocities were analyzed with and without the presence of solid particles. Specific conclusions are drawn to help future user of this antifouling technique to optimize the design for the solid particle. |
| Databáze: | OpenAIRE |
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