Relationship Between Microbial Growth and Hydraulic Properties at the Sub-Pore Scale

Publication type:
Journal article
Metadata:
Autoren
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000693131000001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1007/s11242-021-01680-5
eISSN
1573-1634
Externe Identifier
  • Clarivate Analytics Document Solution ID: WE8FA
ISSN
0169-3913
Ausgabe der Veröffentlichung
3
Zeitschrift
TRANSPORT IN POROUS MEDIA
Schlüsselwörter
  • Biomass permeability
  • Microfluidics
  • Pore-scale simulations
  • Digital twin
  • Porosity-permeability relationship
Paginierung
579 - 593
Datum der Veröffentlichung
2021
Status
Published
Titel
Relationship Between Microbial Growth and Hydraulic Properties at the Sub-Pore Scale
Sub types
  • Article
Ausgabe der Zeitschrift
139

Data source: Web of Science (Lite)

Other metadata sources:
Abstract
<jats:title>Abstract</jats:title><jats:p>Accumulation of microbial biomass and its influence on porous media flow were investigated under saturated flow conditions. Microfluidic experiments were performed with model organisms, and their accumulation was observed in the pore space and on the sub-pore scale. Time-lapse optical imaging revealed different modes of biomass accumulation through primary colonization, secondary growth, and filtration events, showing the formation of preferential flow pathways in the flooding domain as result of the increasing interstitial velocity. Navier–Stokes–Brinkmann flow simulations were performed on the segmented images—a digital-twin approach—considering locally accumulated biomass as impermeable or permeable based on optical biomass density. By comparing simulation results and the experimental responses, it was shown that accumulated biomass can be considered as a permeable medium. The average intra-biomass permeability was determined to be 500 ± 200 mD, which is more than a factor of 10 larger than previously assumed in modeling studies. These findings have substantial consequences: (1) a remaining interstitial permeability, as a result of the observed channel formation and the intra-biomass permeability, and (2) a potential advective nutrient supply, which can be considered more efficient than a purely diffusive supply. The second point may lead to higher metabolic activity and substrate conversion rates which is of particular interest for geobiotechnological applications.</jats:p>
Autoren
DOI
10.1007/s11242-021-01680-5
eISSN
1573-1634
ISSN
0169-3913
Ausgabe der Veröffentlichung
3
Zeitschrift
Transport in Porous Media
Sprache
en
Online publication date
2021
Paginierung
579 - 593
Datum der Veröffentlichung
2021
Status
Published
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1007/s11242-021-01680-5
Datum der Datenerfassung
2021
Titel
Relationship Between Microbial Growth and Hydraulic Properties at the Sub-Pore Scale
Ausgabe der Zeitschrift
139

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