dc.contributor.author | Noubactep, Chicgoua | |
dc.contributor.author | Sonnefeld, J. | |
dc.contributor.author | Merten, D. | |
dc.contributor.author | Heinrichs, T. | |
dc.date.accessioned | 2010-11-24T15:58:35Z | |
dc.date.available | 2010-11-24T15:58:35Z | |
dc.date.issued | 2006 | |
dc.identifier.citation | Journal of radioanalytical and nuclear chemistry; Vol. 270.2006, No. 2, p. 325-333 | |
dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-0001-33E4-E | |
dc.description.abstract | The influence of calcite, dolomite, pyrite and vaterite on the kinetics of uranium (U) release from a natural rock under relevant i.e. field conditions has been investigated. The time dependence of the U release has been studied in two different experimental procedures (open and closed systems) at laboratory temperature (21 ± 2 ʿC). Performing batch experiments in tap water, the U release efficiency of a natural U-bearing rock was characterised in the presence of varying amounts of three different carbonate bearing minerals for experimental durations of up to 782 days. Another experiment was conducted for a period of 14 days in the presence of a pyrite mineral. The results demonstrate that the presence of carbonate minerals does not have any significant influence on U release in closed systems where the U concentration at saturation was ca. 54 mg/L. In contrast, in open systems, the U concentration was ca. 8 mg/L at saturation and the effects of all additives both on kinetics and saturation concentration of U were apparent. | |
dc.format.extent | 29 S. | |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.relation.ispartofseries | Journal of radioanalytical and nuclear chemistry | |
dc.rights.uri | http://e-docs.geo-leo.de/rights | |
dc.subject.ddc | 551 | |
dc.subject.gok | VJF 000 | |
dc.title | Effects of the presence of pyrite and carbonate minerals on the kinetics of the uranium release from a natural rock | |
dc.type | article | |
dc.subject.gokverbal | Umweltgeochemie insgesamt | |
dc.bibliographicCitation.volume | 270 | |
dc.bibliographicCitation.issue | 2 | |
dc.bibliographicCitation.firstPage | 325 | |
dc.bibliographicCitation.lastPage | 333 | |
dc.identifier.doi | 10.23689/fidgeo-822 | |
dc.identifier.ppn | 587556315 | |
dc.identifier.urn | 10.1007/s10967-006-0352-x | |
dc.type.version | publishedVersion | |
dc.bibliographicCitation.journal | Journal of radioanalytical and nuclear chemistry | |
dc.relation.collection | Geologische Wissenschaften | |
dc.description.type | research | |