Mechanistic description of convective gas−liquid mass transfer in biotrickling filters using CFD modeling.

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dc.coverageDOI: 10.1021/acs.est.9b02662
dc.creatorMoreno-Casas, Patricio A.
dc.creatorScott, Felipe
dc.creatorDelpiano, Jose
dc.creatorAbell, Jose A.
dc.creatorCaicedo, Francisco
dc.creatorMuñoz, Raul
dc.creatorVergara-Fernández, Alberto
dc.date2020
dc.date.accessioned2025-11-18T19:47:30Z
dc.date.available2025-11-18T19:47:30Z
dc.description<p>The gas−liquid mass transfer coefficient is a key parameter to the design and operation of biotrickling filters that governs the transport rate of contaminants and oxygen from the gas phase to the liquid phase, where pollutant biodegradation occurs. Mass transfer coefficients are typically estimated via experimental procedures to produce empirical correlations, which are only valid for the bioreactor configuration and range of operational conditions under investigation. In this work, a new method for the estimation of the gas−liquid mass transfer coefficient in biotrickling filters is presented. This novel methodology couples a realistic description of the packing media (polyurethane foam without a biofilm) obtained using microtomography with computational fluid dynamics. The two-dimensional analysis reported in this study allowed capturing the mechanisms of the complex processes involved in the creeping porous air and water flow in the presence of capillary effects in biotrickling filters. Model predictions matched the experimental mass transfer coefficients (±30%) under a wide range of operational conditions.</p>eng
dc.descriptionThe gas–liquid mass transfer coefficient is a key parameter to the design and operation of biotrickling filters that governs the transport rate of contaminants and oxygen from the gas phase to the liquid phase, where pollutant biodegradation occurs. Mass transfer coefficients are typically estimated via experimental procedures to produce empirical correlations, which are only valid for the bioreactor configuration and range of operational conditions under investigation. In this work, a new method for the estimation of the gas–liquid mass transfer coefficient in biotrickling filters is presented. This novel methodology couples a realistic description of the packing media (polyurethane foam without a biofilm) obtained using microtomography with computational fluid dynamics. The two-dimensional analysis reported in this study allowed capturing the mechanisms of the complex processes involved in the creeping porous air and water flow in the presence of capillary effects in biotrickling filters. Model predictions matched the experimental mass transfer coefficients (±30%) under a wide range of operational conditions.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/053fa55f-105d-4950-997c-176679c94146
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/55079
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.54 (2020) nr.1 p.419-426
dc.subjectBiodegradation
dc.subjectEnvironmental
dc.subjectBiofilms
dc.subjectBioreactors
dc.subjectFiltration
dc.subjectOxygen
dc.titleMechanistic description of convective gas−liquid mass transfer in biotrickling filters using CFD modeling.eng
dc.typeArticleeng
dc.typeArtículospa
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