Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/218275
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dc.contributor.authorHu, Kaidies_ES
dc.contributor.authorTorán, Josefinaes_ES
dc.contributor.authorLópez-García, Esteres_ES
dc.contributor.authorBarbieri, Maria Vittoriaes_ES
dc.contributor.authorPostigo, Cristinaes_ES
dc.contributor.authorLópez de Alda, Mirenes_ES
dc.contributor.authorCaminal, Glòriaes_ES
dc.contributor.authorSarrà, Montserrates_ES
dc.contributor.authorBlánquez, Paquies_ES
dc.date.accessioned2020-08-20T07:34:37Z-
dc.date.available2020-08-20T07:34:37Z-
dc.date.issued2020-11-15-
dc.identifier.citationScience of the Total Environment 140628 (2020)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/218275-
dc.descriptionIt is possible to consult this version in open access at the following web address: arXiv:2011.11638-
dc.description.abstractThe occurrence of the extensively used herbicide diuron in the environment poses a severe threat to the ecosystem and human health. Four different ligninolytic fungi were studied as biodegradation candidates for the removal of diuron. Among them, T. versicolor was the most effective species, degrading rapidly not only diuron (83%) but also the major metabolite 3,4-dichloroaniline (100%), after 7-day incubation. During diuron degradation, five transformation products (TPs) were found to be formed and the structures for three of them are tentatively proposed. According to the identified TPs, a hydroxylated intermediate 3-(3,4-dichlorophenyl)-1-hydroxymethyl-1-methylurea (DCPHMU) was further metabolized into the N-dealkylated compounds 3-(3,4-dichlorophenyl)-1-methylurea (DCPMU) and 3,4-dichlorophenylurea (DCPU). The discovery of DCPHMU suggests a relevant role of hydroxylation for subsequent N-demethylation, helping to better understand the main reaction mechanisms of diuron detoxification. Experiments also evidenced that degradation reactions may occur intracellularly and be catalyzed by the cytochrome P450 system. A response surface method, established by central composite design, assisted in evaluating the effect of operational variables in a trickle-bed bioreactor immobilized with T. versicolor on diuron removal. The best performance was obtained at low recycling ratios and influent flow rates. Furthermore, results indicate that the contact time between the contaminant and immobilized fungi plays a crucial role in diuron removal. This study represents a pioneering step forward amid techniques for bioremediation of pesticides-contaminated waters using fungal reactors at a real scale.es_ES
dc.description.sponsorshipThis work has been supported by the Spanish Ministry of Economy and Competitiveness State Research Agency (CTM2016-75587-C2-1-R and CTM2016-75587-C2-2-R) and co-financed by the European Union through the European Regional Development Fund (ERDF) and the Horizon 2020 research and innovation WATERPROTECT project (727450). This work was partly supported by the Generalitat de Catalunya (Consolidate Research Group 2017-SGR-14) and the Ministry of Science and Innovation (Project CEX2018-000794-S). The Department of Chemical, Biological and Environmental Engineering of the Universitat Autònoma de Barcelona is a member of the Xarxa de Referència en Biotecnologia de la Generalitat de Catalunya. K. Hu acknowledges the financial support from the Chinese Scholarship Council.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/727450es_ES
dc.relationMINECO/ICTI2013-2016/CTM2016-75587-C2-1-Res_ES
dc.relationMINECO/ICTI2013-2016/CTM2016-75587-C2-2-Res_ES
dc.relationMICIU/ICTI2017-2020/CEX2018-000794-Ses_ES
dc.relation.isversionofPostprintes_ES
dc.rightsopenAccessen_EN
dc.subjectHerbicide removales_ES
dc.subjectWhite-rot fungies_ES
dc.subjectTransformation productses_ES
dc.subjectBioreactores_ES
dc.subjectResponse surface methodologyes_ES
dc.subjectHigh-resolution mass spectrometryes_ES
dc.titleFungal bioremediation of diuron-contaminated waters: Evaluation of its degradation and the effect of amendable factors on its removal in a trickle-bed reactor under non-sterile conditionses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.scitotenv.2020.140628-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1016/j.scitotenv.2020.140628es_ES
dc.embargo.terms2022-11-15es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.contributor.orcidPostigo, Cristina [0000-0002-7344-7044]es_ES
dc.contributor.orcidLópez De Alda, Miren [0000-0002-9347-2765]es_ES
dc.contributor.orcidCaminal, Glòria [0000-0001-9646-6099]es_ES
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item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
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