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Natural Magnetite Minerals Enhance 1,2-Dichloroethane Reductive Dechlorination

2022-06-26Journal article Open access
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dc.contributor.authorLeitão, Patrícia
dc.contributor.authorTucci, Matteo
dc.contributor.authorCruz Viggi, Carolina
dc.contributor.authorNouws, Henri
dc.contributor.authorDanko, Anthony S.
dc.contributor.authorAulenta, Federico
dc.date.accessioned2023-01-30T11:31:07Z
dc.date.available2023-01-30T11:31:07Z
dc.date.issued2022-06-26
dc.description.abstractContamination of soil and groundwater by chlorinated solvents is an environmental issue of primary concern. Recently, electrically conductive iron particles have been proposed as a novel approach to accelerate anaerobic bioremediation processes. In fact, it was demonstrated that conductive particles facilitate the exchange of electrons between microorganisms via Direct Interspecies Electron Transfer (DIET) processes, thus enhancing the pollutant-degrading potential of the microbial community. However, the use of natural minerals in this context has not been reported so far. In this study, we applied, for the first time, natural magnetite and hematite to accelerate the reductive dechlorination of 1,2-dichloroethane by an enrichment culture in lab-scale anaerobic microcosms. After four feeding cycles, low magnetite-amended microcosms (13 mg/L) yielded the highest rate of 1,2-DCA reductive dechlorination and reduced methanogenic activity. By contrast, hematite did not display any apparent stimulatory effect. Surprisingly, in the presence of higher amounts of iron oxides, a weaker effect was obtained, probably because iron(III) present in the minerals competed for the electrons necessary for reductive dechlorination. For all microcosms, the concentration of the toxic byproduct vinyl chloride was negligible throughout the whole study. The SEM/EDS analysis confirmed the close interaction between the conductive iron oxide particles and the dechlorinating bacteria. This work opens the possibility of using natural conductive minerals for bioremediation applications as well as shedding light on the previously unrecognized role of such minerals in contaminated ecosystemspt_PT
dc.description.sponsorshipThe authors would like to thank FCT (Portuguese Foundation for Science and Technology) for the financial support of Patrícia Leitão through the Ph.D. grant SFRH/BD/87312/2012pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/min12070816pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/21995
dc.language.isoengpt_PT
dc.publisherMDPIpt_PT
dc.relationMICROBIAL BIOELECTROCHEMICAL REMEDIATION OF CHLORINATED ORGANICS
dc.relation.publisherversionhttps://www.mdpi.com/2075-163X/12/7/816pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectMagnetitept_PT
dc.subjectHematitept_PT
dc.subjectConductive particlespt_PT
dc.subjectReductive dechlorinationpt_PT
dc.subjectGroundwater remediationpt_PT
dc.subjectDirect interspecies electron transfer (DIET)pt_PT
dc.subject1,2-dichloroethanept_PT
dc.titleNatural Magnetite Minerals Enhance 1,2-Dichloroethane Reductive Dechlorinationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMICROBIAL BIOELECTROCHEMICAL REMEDIATION OF CHLORINATED ORGANICS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F87312%2F2012/PT
oaire.citation.issue7pt_PT
oaire.citation.startPage816pt_PT
oaire.citation.titleMineralspt_PT
oaire.citation.volume12pt_PT
person.familyNameNouws
person.givenNameHendrikus
person.identifier1046746
person.identifier.ciencia-idD915-8A63-26A3
person.identifier.ciencia-id9B1A-9CED-6EE3
person.identifier.orcid0000-0001-8195-7469
person.identifier.orcid0000-0002-1472-8866
person.identifier.ridD-5249-2013
person.identifier.scopus-author-id7801450247
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione1a08b1c-0660-4874-b07c-4336d64e00bb
relation.isAuthorOfPublication2c48191f-fb0f-44a5-9435-88912f2a4bbc
relation.isAuthorOfPublication.latestForDiscoverye1a08b1c-0660-4874-b07c-4336d64e00bb
relation.isProjectOfPublicationc5d46d62-a124-4870-acf0-b482322433d3
relation.isProjectOfPublication.latestForDiscoveryc5d46d62-a124-4870-acf0-b482322433d3

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