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Showing 1 to 6 of 6 for “"uranium contamination"”.
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Uranium in groundwater and its potential as a natural contaminant in the Cherokee Basin, southeastern Kansas
… The ingestion of radioactive nuclides such as uranium has been associated with renal and cancer-related issues in humans. Many previous studies have focused on anthropogenic uranium contamination. Here, we examined the potential for natural uranium contamination from water-rock interaction in …
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Hydrogeological controls of uranium and arsenic mobility in groundwater of the Pine Ridge Reservation, South Dakota
… hydrogeologic controls of arsenic and uranium contamination within groundwater of the Arikaree aquifer on the Pine Ridge Reservation (PRR). Located in southwestern South Dakota, geologic strata on the PRR are enriched with uranium and arsenic due to volcanic ash deposits emplaced into …
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The effects of bicarbonate and mineral surfaces on uranium immobilization under anaerobic conditions
… of Energy (DoE) extensively mined and processed uranium at various sites. As a result, widespread uranium contamination exists in subsurface sediments and aquifers. In subsurface environments, uranium primarily exists as U(VI) or U(IV), oxidized and reduced species, respectively. U(VI) is highly …
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Interaction of aqueous U(VI) with goethite, montmorillonite, and UO2(s)
<p>Uranium contamination in subsurface environments is a matter of great concern throughout the world. Fate and transport of uranium in the subsurface can be controlled by U(VI) adsorption and reduction onto common iron (oxy)hydroxides and clay minerals. Aqueous U(VI) can also exchange uranium …
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Sorption of Metals onto Natural Sediments and Engineered Iron Oxide Nanoparticles
<p>Metal contamination of subsurface environments and engineered water systems can be derived from natural processes and anthropogenic activities associated with industrial processes, past weapons production, and mining works. The toxic and carcinogenic effects of uranium and chromium pose a …
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The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination
… three geologic settings: basalt differentiation, uranium ore genesis, and the remediation of a uranium-contaminated groundwater system. In the latter two cases, 238U/235U is used as a tracer of uranium reduction. 238U preferentially enters the reduced (solid) U phase, thus analysis of U ores can …