Browsing School of Earth and Atmospheric Sciences (EAS) by Subject "Uranium"
Now showing items 1-6 of 6
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A coral ensemble record of the El Niño southern oscillation over the mid-to-late holocene
(Georgia Institute of Technology, 2017-07-28)The El Niño-Southern Oscillation (ENSO) represents the largest source of year-to-year global climate extremes. However, its sensitivity to external climate forcing, whether natural or anthropogenic, is difficult to assess ... -
Geochemical controls of the microbially mediated redox cycling of uranium and iron
(Georgia Institute of Technology, 2018-04-05)Mining and processing of uranium ore, followed by improper disposal and aging nuclear waste infrastructure, have left behind a legacy of uranium contamination across the United States. Uranium bioreduction, an in situ ... -
The Impact of Salt Marsh Hydrogeology on Dissolved Uranium
(Georgia Institute of Technology, 2004-05-12)We quantified U removal and investigated the efficacy of uranium as a quantitative tracer of groundwater discharge in a headwater salt marsh of the Okatee River, Bluffton, SC. Determining the magnitude of U removal is ... -
Non-reductive biomineralization of U(VI)-phosphate minerals through the activities of microbial phytases
(Georgia Institute of Technology, 2013-05-17)In environments characterized by low pH and/or high nitrate, the biomineralization of U(VI)-phosphate minerals represents a uniquely suited bioremediation method involving microbially-mediated hydrolysis of organophosphates ... -
Nonreductive biomineralization of uranium(VI) as a result of microbial phosphatase activity
(Georgia Institute of Technology, 2009-07-06)Uranium contamination of soils and groundwater at Department of Energy facilities across the United States is a primary environmental concern and the development of effective remediation strategies is a major challenge. ... -
Using flow through reactors to study the non-reductive biomineralization of uranium phosphate minerals
(Georgia Institute of Technology, 2012-04-06)Uranium contaminations of the subsurface in the vicinity of nuclear materials processing sites pose a health risk as the uranyl ion in its oxidized state, U(VI), is highly mobile in aquifers. Current remediation strategies ...