Uranium Mobility During In Situ Redox Manipulation of the 100 Areas of the Hanford Site
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بررسی هیدروژئوشیمیایی اورانیوم در مناطق آیرکان و چشمه شتری با تاکید بر عوامل کمپلکس‌ساز و شاخص اشباع کانه‌های اورانیوم
Uranium becomes soluble and mobile under oxidizing conditions in aqueous environment, and presence of complexing agents with uranium increase this mobility. Existence of such conditions in groundwaters of Ayrakan and Cheshmeh Shotori areas has led to oxidation, solubility and mobility of uranium minerals. Hydrogeochemical study of uranium in the study areas reveals the presence of bicarbonate i...
متن کاملSpectroscopic and diffraction study of uranium speciation in contaminated vadose zone sediments from the Hanford site, Washington state.
Contamination of vadose zone sediments under tank BX-102 at the Hanford site, Washington, resulted from the accidental release of 7-8 metric tons of uranium dissolved in caustic aqueous sludge in 1951. We have applied synchrotron-based X-ray spectroscopic and diffraction techniques to characterize the speciation of uranium in samples of these contaminated sediments. UIII-edge X-ray absorption f...
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985 The Hanford Site in south-central Washington State produced plutonium for the USDOE weapons program from 1943 to 1989. Plutonium (Pu) production involved the fi ssion of uranium fuels using nine nuclear reactors along the Columbia River, followed by the extraction and concentration of trace product Pu through chemically intensive processing regimes performed in the central portion of the si...
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ABSTRACT Background : Natural uranium exists in earth crust and seawater. The concentration of uranium might increase by human manipulation or geological changes. The aim of this study was to verify susceptibility of laser flourimetry method to determine the uranium concentration in Caspian Sea and Persian Gulf water. Materials and Methods : Laser flourimetric method was used to determine...
متن کاملResponse of Hanford Site Soil Arthrobacter Isolates to Uranium Contamination
Uranium is one of the most prevalent radiological groundwater and soil contaminants at Hanford, the U.S. Department of Energy (DOE) site, Washington State, USA. Bioremediation strategies, such as injections of a soluble sodium tripolyphosphate amendment into the contaminated groundwater in order to sequester uranium through the formation of insoluble uranyl phosphate minerals, may have resulted...
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تاریخ انتشار 2000