The Influence of Dissolved Organic Substances in Groundwater on Sorption Behavior of Americium and Neptunium

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Report discussing the results of experiments to determine whether disssolved organic substances can enhance the tranport of radionuclides through the groundwater system.

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v, 30 p. : charts, tables

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Boggs, Sam & Seitz, M. January 1984.

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  • Main Title: The Influence of Dissolved Organic Substances in Groundwater on Sorption Behavior of Americium and Neptunium
  • Added Title: ANL (Series)
  • Added Title: Argonne National Laboratory Report ANL-83-84
  • Series Title: Argonne National Laboratory Reports

Description

Report discussing the results of experiments to determine whether disssolved organic substances can enhance the tranport of radionuclides through the groundwater system.

Physical Description

v, 30 p. : charts, tables

Notes

Abstract: Groundwaters typically contain dissolved organic carbon consisting largely of high molecular weight compounds of humic and fulvic acids. To evaluate whether these dissolved organic substances can enhance the tranport of radionuclides through the groundwater system, experiments were conducted to examine the sorption of americium and neptunium onto crushed basalt in the presence of dissolved humic- and fulvic-acid organic carbon introduced into synthetic groundwater. The partitioning experiments with synthetic groundwater show that increasing the concentration of either humic or fulvic acid in the water has a significant inhibiting effect on sorption of both americium and neptunium. At 22 C, adsorption of these radionuclides, as measured by distribution ratios (the ratio of nuclide absorbed onto the solid to nuclide in solution at the end of the experiment), decreased by 25% to 50% by addition of as little as 1 mg/L dissolved organic carbon and by one to two orders of magnitude by addition of 100 to 200 mg/L dissolved organic carbon. Distribution ratios measured in solutions reacted at 90 C similarly decreased with the addition of dissolved organic carbon but generally ranged from one to two orders of magnitude higher than those determined in the 22 C experiment. These results suggest that organic carbon dissolved in deep groundwaters may significantly enhance the mobility of radionuclides of americium and neptunium.

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Technical Report Archive and Image Library

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  • January 1984

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  • Aug. 4, 2015, 8:33 a.m.

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Boggs, Sam & Seitz, M. The Influence of Dissolved Organic Substances in Groundwater on Sorption Behavior of Americium and Neptunium, report, January 1984; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc283618/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.