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dc.contributor.authorUrík, Martin
dc.contributor.authorPolák, Filip
dc.contributor.authorBujdoš, Marek
dc.contributor.authorMiglierini, Marcel B.
dc.contributor.authorMilová-Žiaková, Barbora
dc.contributor.authorFarkas, Bence
dc.contributor.authorGoneková, Zuzana
dc.contributor.authorVojtková, Hana
dc.contributor.authorMatúš, Peter
dc.date.accessioned2019-04-16T07:35:13Z
dc.date.available2019-04-16T07:35:13Z
dc.date.issued2019
dc.identifier.citationScience of the Total Environment. 2019, vol. 664, p. 683-689.cs
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.urihttp://hdl.handle.net/10084/134643
dc.description.abstractFerric oxyhydroxides are natural scavengers of antimony, thus, they contribute significantly to antimony immobilization in soils and sediments. Recent studies, however, usually omit microbial influence on geochemically stable antimony-ferric oxyhydroxide association. Therefore, we have evaluated fungal contribution to antimony mobility during static cultivation of common soil fungus Aspergillu.s niger in presence of ferric oxyhydroxides. Our results indicate distinguished effect of fungus on antimony distribution at two different antimony concentrations that were used for antimony pre-adsorbtion onto ferric oxyhydroxides prior to the inoculation. Approximately 36% of antimony was bioextracted by fungus from antimony bearing ferric oxyhydroxide after 14-day cultivation when the 8.9 mg.L-1 antimony concentration was used for pre-adsorption. However, no statistically significant change of antimony content in ferric oxyhyclroxicles was observed after cultivation when initial 48 mg.L-1 antimony concentration was used for pre-adsorption. As Mossbauer spectroscopy and XRD analysis indicated, nanosized akageneite, goethite, and lepidocrocite enhanced their crystallinity during cultivation, while hematite was identified only after the cultivation. Nevertheless, presence of ferric oxyhydroxides at both initial concentrations enabled transformation of antimony into volatile derivatives, and almost 9.5% of antimony was biovolatilized after cultivation. These results contribute significantly to environmental geochemistry of antimony-ferric oxyhydroxides association and highlight the importance of microbial activity in relation to ferric component of natural geochemical barriers.cs
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofseriesScience of the Total Environmentcs
dc.relation.urihttps://doi.org/10.1016/j.scitotenv.2019.02.033cs
dc.rights© 2019 Elsevier B.V. All rights reserved.cs
dc.subjectantimonycs
dc.subjectAspergillus nigercs
dc.subjectbioleachingcs
dc.subjectbiovolatilizationcs
dc.titleAntimony leaching from antimony-bearing ferric oxyhydroxides by filamentous fungi and biotransformation of ferric substratecs
dc.typearticlecs
dc.identifier.doi10.1016/j.scitotenv.2019.02.033
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume664cs
dc.description.lastpage689cs
dc.description.firstpage683cs
dc.identifier.wos000460245600064


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