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Stabilization of Uranium(VI) at Low pH by Fungal Metabolites: Applications in Environmental Biotechnology
Jagiellonian University, Krakow, Poland.
Örebro University, School of Science and Technology. (Man-Technology-Environment Research Centre)
Örebro University, School of Science and Technology. (Man-Technology-Environment Research Centre)ORCID iD: 0000-0001-7845-6495
Jagiellonian University, Krakow, Poland.
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2014 (English)In: 5th International Conference on Environmental Science and Development - ICESD 2014, 2014, Vol. 10, p. 142-148Conference paper, Published paper (Refereed)
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.

Place, publisher, year, edition, pages
2014. Vol. 10, p. 142-148
Series
Agriculture and Agricultural Science Procedia, ISSN 2210-7843
Keywords [en]
Uranium, Bioremediation, Fungal Metabolites
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:oru:diva-42263DOI: 10.1016/j.apcbee.2014.10.032ISI: 000396739100026OAI: oai:DiVA.org:oru-42263DiVA, id: diva2:784504
Conference
5th International Conference on Environmental Science and Development (ICESD,Singapore,FEB 19-21,2014
Available from: 2015-01-29 Created: 2015-01-29 Last updated: 2018-04-19Bibliographically approved

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Grandin, AnnaSjöberg, ViktorKarlsson, Stefan

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