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Título
Mechanistic description of convective gas–liquid mass transfer in biotrickling filters using CFD modeling
Autor
Año del Documento
2020
Editorial
ACS Publications
Descripción
Producción Científica
Documento Fuente
Environmental Science & Technology, 2020, vol. 54, n. 1. p. 419–426
Abstract
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.
Palabras Clave
Gas−liquid mass transfer
Transferencia de masa gas-líquido
Biotrickling filters
Filtros biopercoladores
ISSN
1520-5851
Revisión por pares
SI
Patrocinador
CONICYT (projects Fondecyt 1180685, Fondecyt 119052 and Basal FB0008)
Junta de Castilla y León (projects UIC71 and CLU-2017-09)
Fondo de Ayuda a la Investigacion (FAI) (project INV-IN-2017-05)
Junta de Castilla y León (projects UIC71 and CLU-2017-09)
Fondo de Ayuda a la Investigacion (FAI) (project INV-IN-2017-05)
Version del Editor
Propietario de los Derechos
© 2020 ACS Publications
Idioma
eng
Tipo de versión
info:eu-repo/semantics/acceptedVersion
Derechos
openAccess
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