Reactive Transport of U and V from Abandoned Uranium Mine Wastes
نویسندگان
چکیده
منابع مشابه
Bioaccessibility of U, Th and Pb in solid wastes and soils from an abandoned uranium mine.
Bioaccessible U, Th, Pb and the 238U decay products 214Pb and 210Pb have been determined, using a modified Unified BARGE Method (UBM), in waste solids and soils from an abandoned uranium mine in South West England, UK. Maximum aqua regia extractable concentrations for U, Th and Pb were 16,200, 3.8 and 4750 μg g-1, respectively. 238U had highest activity concentrations near the mine shaft, where...
متن کاملMeasurement of Genotoxic Endpoints in Earthworms Exposed to Radioactive Wastes from an Abandoned Uranium Mine
The main objective of this study was to assess the sensitivity of genotoxic endpoints, to be considered in earthworm’s reproduction assays, performed under the evaluation of soils contaminated with radioactive wastes. Earthworms were exposed, under laboratorial conditions, to a contaminated soil from the Cunha Baixa uranium mine and to LUFA 2.2 soil (control soil). Earthworms (Eisenia andrei Bo...
متن کاملBehaviour and mobility of U and Ra in sediments near an abandoned uranium mine, Cornwall, UK.
Sediment samples were collected from the vicinity of the abandoned South Terras uranium mine in south-west UK and analysed for uranium and (226)Ra to explore their geochemical dispersion. The radioactivity concentrations in the sediment samples were measured using alpha spectrometry for uranium, and gamma spectrometry for radium. Sequential chemical extraction was applied to selected sediments ...
متن کاملStudy of arsenopyrite weathering products in mine wastes from abandoned tungsten and tin exploitations.
Arsenopyrite-rich wastes from abandoned tungsten and tin exploitations were studied to determine the composition and characteristics of the secondary phases formed under natural weathering conditions so as to assess their potential environmental risk. Representative weathered arsenopyrite-bearing rock wastes collected from the mine dumps were analysed using the following techniques: X-ray powde...
متن کاملEffect of biogeochemical redox processes on the fate and transport of As and U at an abandoned uranium mine site: an X-ray absorption spectroscopy study
Although As can occur in U ore at concentrations up to 10wt-%, the fate and transport of both U and As at U mine tailings have not been previously investigated at a watershed scale. The major objective of this study was to determine primary chemical and physical processes contributing to transport of both U and As to a down gradient watershed at an abandoned U mine site in South Dakota. Uranium...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Environmental Science & Technology
سال: 2017
ISSN: 0013-936X,1520-5851
DOI: 10.1021/acs.est.7b03823