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dc.contributor.authorPrenafeta-Boldú, Francesc Xavier
dc.contributor.authorIlla i Alibés, Josep
dc.contributor.authorGroenestijn, Johan W. van
dc.contributor.authorFlotats i Ripoll, Xavier
dc.date.accessioned2016-05-23T12:31:12Z
dc.date.issued2008
dc.identifier.issn0175-7598
dc.identifier.urihttp://hdl.handle.net/10459.1/57085
dc.description.abstractThe biodegradation of toluene was studied in two lab-scale air biofilters operated in parallel, packed respec- tively with perlite granules (PEG) and polyurethane foam cubes (PUC) and inoculated with the same toluene- degrading fungus. Differences on the material pore size, from micrometres in PEG to millimetres in PUC, were responsible for distinct biomass growth patterns. A compact biofilm was formed around PEG, being the interstitial spaces progressively filled with biomass. Microbial growth concentrated at the core of PUC and the excess of biomass was washed-off, remaining the gas pressure drop compar- atively low. Air dispersion in the bed was characterised by tracer studies and modelled as a series of completely stirred tanks (CSTR). The obtained number of CSTR ( n ) in the PEG packing increased from 33 to 86 along with the applied gas flow (equivalent to empty bed retention times from 48 to 12 s) and with operation time (up to 6 months). In the PUC bed, n varied between 9 and 13, indicating that a stronger and steadier gas dispersion was achieved. Michaelis – Menten half saturation constant ( k m ) estimates ranged 71 – 113 mg m − 3 , depending on the experimental conditions, but such differences were not significant at a 95% confidence interval. The maximum volumetric elim- ination rate ( r m )variedfrom23to50gm − 3 h − 1 . Comparison between volumetric and biomass specific biodegradation activities indicated that toluene mass trans- fer was slower with PEG than with PUC as a consequence of a smaller biofilm surface and to the presence of larger zones of stagnant air.ca_ES
dc.description.sponsorshipThis work has partly been funded by grants BIO4 CT 972295 from the European Commission and CTM2006- 07976 from the Spanish Ministry of Science and Educationca_ES
dc.language.isoengca_ES
dc.publisherSpringerca_ES
dc.relationMIECI/PN2004-2007/CTM2006-07976ca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1007/s00253-008-1433-2ca_ES
dc.relation.ispartofApplied Microbiology and Biotechnology, 2008, vol. 79, p. 319-327ca_ES
dc.rights(c) Springer, 2008ca_ES
dc.subjectAir biofiltrationca_ES
dc.subjectPacking materialsca_ES
dc.subjectBiodegradation kineticsca_ES
dc.subjectDispersion dynamicsca_ES
dc.titleInfluence of synthetic packing materials on the gas dispersion and biodegradation kinetics in fungal air biofiltersca_ES
dc.typearticleca_ES
dc.identifier.idgrec018627
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1007/s00253-008-1433-2
dc.date.embargoEndDate2025-01-01


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