Interaction between biofilm growth and NAPL remediation: A pore-scale study
| Autor: | C. Oltean, P. Fischer, Xiaofan Yang, M. Benioug, Fabrice Golfier, Michel Buès |
|---|---|
| Přispěvatelé: | Beijing Computational Science Research Center [Beijing] (CSRC), GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), State Key Laboratory of Earth Surface Processes and Resource Ecology (ESPRE), Beijing Normal University (BNU), ANR-10-BLAN-0908,MOBIOPOR,Modélisation de la biodégradation de polluants en milieu poreux: de la bactérie à l'échelle du terrain(2010), European Project: 645717,H2020,H2020-MSCA-RISE-2014,PROTINUS(2015), Institut national des sciences de l'Univers (INSU - CNRS)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
0208 environmental biotechnology Physics::Medical Physics 02 engineering and technology Péclet number 01 natural sciences [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Physics::Fluid Dynamics symbols.namesake immersed boundary method porous media Phase (matter) Fluid dynamics lattice Botzmann method [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology Dissolution 0105 earth and related environmental sciences Water Science and Technology Finite volume method biofilm growth cellular automata Mechanics Immersed boundary method 020801 environmental engineering [SDE]Environmental Sciences symbols Environmental science NAPL biodegradation Current (fluid) Porous medium |
| Zdroj: | Advances in Water Resources Advances in Water Resources, Elsevier, 2019, 125, pp.82-97. ⟨10.1016/j.advwatres.2019.01.011⟩ Advances in Water Resources, 2019, 125, pp.82-97. ⟨10.1016/j.advwatres.2019.01.011⟩ |
| ISSN: | 0309-1708 |
| DOI: | 10.1016/j.advwatres.2019.01.011⟩ |
| Popis: | International audience; In this paper, we introduce a pore-scale model to study the interaction between biofilm growth and non-aqueous-phase-liquid (NAPL) dissolution. Liquid flow and dissolved NAPL transport are coupled with a biofilm growth model to correctly describe the complex dynamics of the processes including fluid flow, NAPL dissolution/biodegradation and biofilm growth. Fluid flow is simulated using an immersed boundary-lattice Boltzmann (IB-LB) model; while solute transport is solved by a cut-cell finite volume method (FVM). A uniform dissolution approach is also adopted to capture the temporal evolution of trapped blobs. Spatio-temporal distributions of the biomass are investigated using a cellular automaton algorithm combined with the immersed boundary method (IBM). Simulations focused on NAPL dissolution in both abiotic and biotic conditions are conducted to assess the capability of the model. In abiotic conditions, we analyze the effects of the hydrodynamic regimes and the spatial distribution of NAPL blobs on the dissolution rate under different assumptions (i.e., blob size and Péclet number). In biotic conditions, a series of impact factors are also investigated (i.e., spatial distribution, reaction kinetics and NAPL-induced toxicity). Finally, the current model is used to evaluate the pore scale relevance of a local equilibrium assumption between fluid phase and biofilm phase in the vicinity of the NAPL source. |
| Databáze: | OpenAIRE |
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