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dc.contributor.authorGuimerà Villalba, Xavier
dc.contributor.authorDorado Castaño, Antonio David
dc.contributor.authorBonsfills Pedrós, Anna
dc.contributor.authorGabriel Buguña, David
dc.contributor.authorGamisans Noguera, Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera i Recursos Naturals
dc.identifier.citationGuimera, X. [et al.]. Effect of biomass density on oxygen diffusivity measured inside biofilms with a MEA Sensor. A: European Meeting on Chemical Industry and Environment. "EMChIE 2015 Conference Proceedings". Tarragona: 2015, p. 65-70.
dc.description.abstractThe optimization of biofiltration technologies can be addressed improving the knowledge of the process taking place within biofilms, mainly biokinetics and mass transport. Biokinetics are usually defined using different methodologies, such as respirometric and titrimetric tests. Mass transport within biofilms is usually described as diffusion through a homogeneous phase, despite it is accepted that biofilms are very heterogeneous. Thus, a quantitative understanding of how biofilm structure is linked to mass transport is essential to develop reliable models. For this purpose different works have collected the results of various diffusion studies, proposing correlations between biofilm density and mass transport. However the reliability of these correlations, widely used in modeling works, is under suspect because data used in their construction are highly dependent on the experimental conditions where they were obtained. The goal of this paper was to experimentally quantify the effective diffusivity inside biofilms, using a specific microsensor, as function of biomass density, for a specific microbial population and substrate. In addition, biofilm diffusivity was measured at different hydrodynamic conditions. Combining both studies, an equation for the calculation of biofilm diffusivity, considering biomass density and liquid phase velocity, was proposed.
dc.format.extent6 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química orgànica::Bioquímica
dc.subject.otherBiofilm profiling
dc.subject.otherDO microsensor
dc.subject.otherMass transport modeling
dc.subject.otherBiofilm diffusivity
dc.subject.otherDiffusivity correlation
dc.titleEffect of biomass density on oxygen diffusivity measured inside biofilms with a MEA Sensor
dc.typeConference report
dc.contributor.groupUniversitat Politècnica de Catalunya. TRAGASOL - Grup de Tractament Biològic de Contaminants Gasosos i Olors
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorGuimera, X.; Dorado, A.D.; Bonsfills, A.; Gabriel, D.; Gamisans, X.
local.citation.contributorEuropean Meeting on Chemical Industry and Environment
local.citation.publicationNameEMChIE 2015 Conference Proceedings

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