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Stabilization of uranium(VI) at low pH by fungal metabolites : applications in environmental biotechnology
uranium
bioremediation
fungal metabolites
Uranium contamination of soils and water is a worldwide problem due to geology or anthropogenic release such as mining, or use of inorganic fertilizers. In situ remediation of low and moderately contaminated sites is a complicated procedure due to the complex chemistry of uranium. This study demonstrates that at pH 3.5, a fungal strain isolated from unprocessed uranium bearing shale creates hydrochemical conditions that immobilize 97% of a total of 10 mg L-1 dissolved uranium in a 0.20 μm pore system. The redistribution occurred within 10 minutes and remained for five weeks and just 12% of the inventory was retrieved in the biomass. Size exclusion chromatography of the dissolved phase identified organic substances in the range of more than 60 kD down to 100 D as a response to time of incubation. Geochemical modeling indicates formation of uranium-organic complexes where ligand size, coordination chemistry and their tendency to agglomerate determine the redistribution.
dc.abstract.en | Uranium contamination of soils and water is a worldwide problem due to geology or anthropogenic release such as mining, or use of inorganic fertilizers. In situ remediation of low and moderately contaminated sites is a complicated procedure due to the complex chemistry of uranium. This study demonstrates that at pH 3.5, a fungal strain isolated from unprocessed uranium bearing shale creates hydrochemical conditions that immobilize 97% of a total of 10 mg L-1 dissolved uranium in a 0.20 μm pore system. The redistribution occurred within 10 minutes and remained for five weeks and just 12% of the inventory was retrieved in the biomass. Size exclusion chromatography of the dissolved phase identified organic substances in the range of more than 60 kD down to 100 D as a response to time of incubation. Geochemical modeling indicates formation of uranium-organic complexes where ligand size, coordination chemistry and their tendency to agglomerate determine the redistribution. | pl |
dc.affiliation | Wydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowisku | pl |
dc.contributor.author | Ogar, Anna - 104172 | pl |
dc.contributor.author | Grandin, A. | pl |
dc.contributor.author | Sjöberg, V. | pl |
dc.contributor.author | Turnau, Katarzyna - 132450 | pl |
dc.contributor.author | Karlsson, S. | pl |
dc.date.accessioned | 2015-04-30T13:46:28Z | |
dc.date.available | 2015-04-30T13:46:28Z | |
dc.date.issued | 2014 | pl |
dc.date.openaccess | 0 | |
dc.description.accesstime | w momencie opublikowania | |
dc.description.physical | 142-148 | pl |
dc.description.publication | 0,3 | pl |
dc.description.version | ostateczna wersja wydawcy | |
dc.description.volume | 10 | pl |
dc.identifier.doi | 10.1016/j.apcbee.2014.10.032 | pl |
dc.identifier.eissn | 2212-6708 | pl |
dc.identifier.project | ROD UJ / P | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/6324 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights | Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska | * |
dc.rights.licence | CC-BY-NC-ND | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode | * |
dc.share.type | inne | |
dc.subject.en | uranium | pl |
dc.subject.en | bioremediation | pl |
dc.subject.en | fungal metabolites | pl |
dc.subtype | Article | pl |
dc.title | Stabilization of uranium(VI) at low pH by fungal metabolites : applications in environmental biotechnology | pl |
dc.title.journal | APCBEE Procedia | pl |
dc.title.volume | 5th International Conference on Environmental Science and Development - ICESD 2014 | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |
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