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Release of uranium from weathered black shale in meso-scale reactor systems: first year of data
Örebro University, School of Science and Technology, Örebro University, Sweden. (Man-Technology-Environment Research Centre)ORCID iD: 0000-0001-7845-6495
Örebro University, School of Science and Technology, Örebro University, Sweden. (Man-Technology-Environment Research Centre)
2014 (English)In: Uranium - Past and Future Challenges: Proceedings of the 7th International Conference on Uranium Mining and Hydrogeology / [ed] Merkel Broder J., Arab Alireza, Springer, 2014, 139-146 p.Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Springer, 2014. 139-146 p.
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-37820ISBN: 978-3-319-11059-2 (print)OAI: oai:DiVA.org:oru-37820DiVA: diva2:756552
Conference
Uranium Mining and Hydrogeology 7, 2014, Freiberg, Germany
Available from: 2014-10-17 Created: 2014-10-17 Last updated: 2017-01-27Bibliographically approved
In thesis
1. Utilization of waste materials for extraction of strategic metals: a biogeochemical approach
Open this publication in new window or tab >>Utilization of waste materials for extraction of strategic metals: a biogeochemical approach
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled release to the environment occurs.

By cultivating Agrostis capillaris on historical sulfidic mine waste the leachate composition can be altered and its volume reduced. In combination with additives such as bark compost and water works granules the concentration of several hazardous metals decreased significantly already after eight weeks. Limited actions can therefore be used to decrease the environmental impact from such waste.

Shale in general contains considerable amounts of strategic metals. If naturally occurring microorganisms are provided with a source of nutrients, increased mobilization of strategic metals can be obtained. By using wood chips as the nutrient source the mobilization of vanadium and uranium increased significantly. Highest mobilization efficiency was observed when the carbon source was put on top of the shale.

Analysis of strategic metals is often performed by argon plasma techniques such as ICP-QMS. However, the use of argon increases the analytical costs. If isotopic information is not needed and slightly higher uncertainties can be accepted, several strategic metals can successfully be quantified by the nitrogen plasma based MP AES. The analytical cost can then be cut with more than 99%.

Place, publisher, year, edition, pages
Örebro: Örebro University, 2017. 79 p.
Series
Örebro Studies in Environmental Science, ISSN 1650-6278 ; 17
Keyword
biogeochemistry, ICP-QMS, MP AES, strategic metals, vanadium, uranium, mine waste, steel slag, shale residues
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-53960 (URN)978-91-7529-174-1 (ISBN)
Public defence
2017-02-17, Örebro universitet, Hörsalen, Musikhögskolan, Fakultetsgatan 1, Örebro, 10:15 (Swedish)
Opponent
Supervisors
Available from: 2016-12-14 Created: 2016-12-14 Last updated: 2017-01-27Bibliographically approved

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Sjöberg, ViktorKarlsson, Stefan
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CiteExportLink to record
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