Microbial community analysis in biotrickling filters treating isopropanol air emissions
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Microbial community analysis in biotrickling filters treating isopropanol air emissions

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Microbial community analysis in biotrickling filters treating isopropanol air emissions

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dc.contributor.author Pérez Gil, María del Carmen
dc.contributor.author Álvarez Hornos, Francisco Javier
dc.contributor.author San-Valero, Pau
dc.contributor.author Marzal Doménech, Paula
dc.contributor.author Gabaldón García, Carmen
dc.date.accessioned 2015-11-05T09:45:29Z
dc.date.available 2015-11-05T09:45:29Z
dc.date.issued 2013
dc.identifier.uri http://hdl.handle.net/10550/48058
dc.description.abstract The evolution of the microbial community was analysed over one year in two biotrickling filters operating under intermittent feeding conditions and treating isopropanol emissions, a pollutant typically found in the flexography sector. Each reactor was packed with one media: plastic cross-flow-structured material or polypropylene rings. The communities were monitored by fluorescence in situ hybridization (FISH) and denaturing gradient gel electrophoresis (DGGE) analysis of the 16S rRNA region. After inoculation with activated sludge, the biotrickling filters were operated using inlet loads (ILs) from 20 to 65gCm−3 h−1 and empty-bed residence times (EBRTs) from 14 to 160 s. Removal efficiencies higher than 80% were obtained with ILs up to 35gCm−3 h−1 working at EBRTs as low as 24 s. There was an increase in the total percentage of the target domains of up to around 80% at the end of the experiment. Specifically, the Gammaproteobacteria domain group, which includes the well-known volatile organic compound (VOC)-degrading species such as Pseudomonas putida, showed a noticeable rise in the two biotrickling filters of 26% and 27%, respectively. DGGE pattern band analysis revealed a stable band of Pseudomonas putida in all the samples monitored, even in the lower diversity communities. In addition, at similar operational conditions, the biotrickling filter with a greater relative abundance of Pseudomonas sp. (19.2% vs. 8%) showed higher removal efficiency (90% vs. 79%). Results indicate the importance of undertaking a further in-depth study of the involved species in the biofiltration process and their specific function.
dc.language.iso eng
dc.relation.ispartof Environmental Technology, 2013, vol. 34, num. 19, p. 2789-2798
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Pérez Gil, María del Carmen Álvarez-Hornos, Francisco Javier San-Valero, Pau Marzal Doménech, Paula Gabaldón García, Carmen 2013 Microbial community analysis in biotrickling filters treating isopropanol air emissions Environmental Technology 34 19 2789 2798
dc.subject Química
dc.title Microbial community analysis in biotrickling filters treating isopropanol air emissions
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-11-05T09:45:29Z
dc.identifier.idgrec 090615

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