Dispersion of motile bacteria in a porous medium

Dispersion of motile bacteria in a porous medium

30 pages, 10 figures

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Bibliographic Details
Main Authors: Dentz, Marco, Creppy, Adama, Douarche, Carine, Clément, Eric, Auradou, Harold
Other Authors: Ministerio de Ciencia e Innovación (España)
Format: artículo biblioteca
Language:English
Published: Cambridge University Press 2022-01-11
Subjects:60K50, Active matter, Dispersion, Porous media, Physics - Soft Condensed Matter, Physics - Fluid Dynamics, 76S05,
Online Access:http://hdl.handle.net/10261/278556
http://dx.doi.org/10.13039/501100004837
http://arxiv.org/abs/2201.04628v2
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spelling dig-idaea-es-10261-2785562024-10-26T21:28:12Z Dispersion of motile bacteria in a porous medium Dentz, Marco Creppy, Adama Douarche, Carine Clément, Eric Auradou, Harold Ministerio de Ciencia e Innovación (España) 0000-0002-3940-282X 0000-0001-5216-8997 Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] 60K50 Active matter Dispersion Porous media Physics - Soft Condensed Matter Physics - Fluid Dynamics 76S05 30 pages, 10 figures Understanding flow and transport of bacteria in porous media is crucial to technologies such as bioremediation, biomineralization or enhanced oil recovery. While physicochemical bacteria filtration is well-documented, recent studies showed that bacterial motility plays a key role in the transport process. Flow and transport experiments performed in microfluidic chips containing randomly placed obstacles confirmed that the distributions of non-motile particles stays compact, whereas for the motile strains, the distributions are characterized by both significant retention as well as fast downstream motion. For motile bacteria, the detailed microscopic study of individual bacteria trajectories reveals two salient features: (i) the emergence of an active retention process triggered by motility, (ii) enhancement of dispersion due to the exchange between fast flow channels and low flow regions in the vicinity of the solid grains. We propose a physical model based on a continuous time random walk approach. This approach accounts for bacteria dispersion via variable pore-scale flow velocities through a Markov model for equidistant particle speeds. Motility of bacteria is modeled by a two-rate trapping process that accounts for the motion towards and active trapping at the obstacles. This approach captures the forward tails observed for the distribution of bacteria displacements, and quantifies an enhanced hydrodynamic dispersion effect that originates in the interaction between flow at the pore-scale and bacterial motility. The model reproduces the experimental observations, and predicts bacteria dispersion and transport at the macroscale. M.D. acknowledges the support of the Spanish Research Agency (10.13039/501100011033) and the Spanish Ministry of Science and Innovation through the grants CEX2018-000794-S and PID2019-106887GB-C31 (HydroPore). H.A and C.D. acknowledge the support of the ‘Laboratoire d'Excellence Physics Atom Light Mater’ (LabEx PALM) as part of the ‘Investissements d'Avenir’ program (reference: ANR-10-LABX-0039). E.C., H.A., C.D. and A.C. are supported by the ANR grant ‘BacFlow’ ANR-15-CE30-0013. E.C. is supported by the Institut Universitaire de France. Peer reviewed 2022-09-06T09:59:50Z 2022-09-06T09:59:50Z 2022-01-11 artículo http://purl.org/coar/resource_type/c_6501 Journal of Fluid Mechanics 946: A33 (2022) 00221120 http://hdl.handle.net/10261/278556 10.1017/jfm.2022.596 http://dx.doi.org/10.13039/501100004837 2-s2.0-85136258143 http://arxiv.org/abs/2201.04628v2 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/MCIN/10.13039/501100011033 Journal of Fluid Mechanics Publisher's version https://doi.org/10.1017/jfm.2022.596 Sí open Cambridge University Press
institution IDAEA ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-idaea-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IDAEA España
language English
topic 60K50
Active matter
Dispersion
Porous media
Physics - Soft Condensed Matter
Physics - Fluid Dynamics
76S05
60K50
Active matter
Dispersion
Porous media
Physics - Soft Condensed Matter
Physics - Fluid Dynamics
76S05
spellingShingle 60K50
Active matter
Dispersion
Porous media
Physics - Soft Condensed Matter
Physics - Fluid Dynamics
76S05
60K50
Active matter
Dispersion
Porous media
Physics - Soft Condensed Matter
Physics - Fluid Dynamics
76S05
Dentz, Marco
Creppy, Adama
Douarche, Carine
Clément, Eric
Auradou, Harold
Dispersion of motile bacteria in a porous medium
description 30 pages, 10 figures
author2 Ministerio de Ciencia e Innovación (España)
author_facet Ministerio de Ciencia e Innovación (España)
Dentz, Marco
Creppy, Adama
Douarche, Carine
Clément, Eric
Auradou, Harold
format artículo
topic_facet 60K50
Active matter
Dispersion
Porous media
Physics - Soft Condensed Matter
Physics - Fluid Dynamics
76S05
author Dentz, Marco
Creppy, Adama
Douarche, Carine
Clément, Eric
Auradou, Harold
author_sort Dentz, Marco
title Dispersion of motile bacteria in a porous medium
title_short Dispersion of motile bacteria in a porous medium
title_full Dispersion of motile bacteria in a porous medium
title_fullStr Dispersion of motile bacteria in a porous medium
title_full_unstemmed Dispersion of motile bacteria in a porous medium
title_sort dispersion of motile bacteria in a porous medium
publisher Cambridge University Press
publishDate 2022-01-11
url http://hdl.handle.net/10261/278556
http://dx.doi.org/10.13039/501100004837
http://arxiv.org/abs/2201.04628v2
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AT creppyadama dispersionofmotilebacteriainaporousmedium
AT douarchecarine dispersionofmotilebacteriainaporousmedium
AT clementeric dispersionofmotilebacteriainaporousmedium
AT auradouharold dispersionofmotilebacteriainaporousmedium
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