Design of a rotating disk reactor to assess the colonization of biofilms by free-living amoebae under high shear rates
| Autor: | Pascaline Herbelin, Laurence Mathieu, Salaheddine Skali-Lami, A. Perrin, Frédéric Jorand |
|---|---|
| Přispěvatelé: | Laboratoire de Chimie Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire National d’Hydraulique et Environnement (EDF R&D LNHE), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA ), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Materials science Fresh Water 010501 environmental sciences Aquatic Science Bacterial Physiological Phenomena 01 natural sciences Applied Microbiology and Biotechnology Hydrodynamic shear Reynolds number [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 03 medical and health sciences symbols.namesake shear rate Amoeba freshwater biofilm 0105 earth and related environmental sciences Water Science and Technology Bacteria [SDE.IE]Environmental Sciences/Environmental Engineering Biofilm Mechanics Stainless Steel thermophilic free-living amoebae [SDE.ES]Environmental Sciences/Environmental and Society 6. Clean water Rotating disk Shear rate Shear (sheet metal) 030104 developmental biology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Biofilms hydrodynamics symbols Locomotion |
| Zdroj: | Biofouling Biofouling, Taylor & Francis, 2018, 34 (4), pp.368-377. ⟨10.1080/08927014.2018.1444756⟩ |
| ISSN: | 0892-7014 |
| DOI: | 10.1080/08927014.2018.1444756⟩ |
| Popis: | International audience; The present study was aimed at designing and optimizing a rotating disk reactor simulating high hydrodynamic shear rates (γ), which are representative of cooling circuits. The characteristics of the hydrodynamic conditions in the reactor and the complex approach used to engineer it are described. A 60 l tank was filled with freshwater containing free-living amoebae (FLA) and bacteria. Adhesion of the bacteria and formation of a biofilm on the stainless steel coupons were observed. FLA were able to establish in these biofilms under γ as high as 85,000 s−1. Several physical mechanisms (convection, diffusion, sedimentation) could explain the accumulation of amoeboid cells on surfaces, but further research is required to fully understand and model the fine mechanisms governing such transport under γ similar to those encountered in the industrial environment. This technological advance may enable research into these topics. |
| Databáze: | OpenAIRE |
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