Abstract
In Kvarntorp, Sweden, 40 million m3 of shale residues containing up to 150 ppm uranium is the result from some 30 years of oil extraction. This work focuses on the release of uranium from discarded unprocessed shale in contact with wood chips in 1 m3 scale. After 15 months of incubation it was clear that shale mixed with wood chips generated leachates with a lower average content of uranium (14 μg L−1) then shale covered with wood chips (1,300 μg L−1). This indicates that natural forestation of the pile might increase the release of uranium.
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Acknowledgments
The authors acknowledge; the municipality of Kumla for access to the Kvarntorp area and permission to collect samples, SAKAB AB for providing resources at the experimental site, the Faculty of Economy, Science and Technology at Örebro University for financial support and Prof. Bert Allard for scientific reviewing of the paper.
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Sjöberg, V., Karlsson, S. (2015). Release of uranium from weathered black shale in meso-scale reactor systems – first year of data. In: Merkel, B., Arab, A. (eds) Uranium - Past and Future Challenges. Springer, Cham. https://doi.org/10.1007/978-3-319-11059-2_16
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DOI: https://doi.org/10.1007/978-3-319-11059-2_16
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