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Organic complexant-enhanced mobility of toxic elements in low-level wastes. Quarterly progress report, January-March 1984 [electronic resource]

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Bibliographic Details
Online Access:	Online Access
Corporate Authors:	Pacific Northwest Laboratory (Researcher), Pacific Northwest National Laboratory (U.S.) (Researcher)
Format:	Government Document Electronic eBook
Language:	English
Published:	Richland, Wash. : Oak Ridge, Tenn. : Pacific Northwest National Laboratory (U.S.) ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1984.
Subjects:	Information. Experimental Data. Toxic Materials. Mass Transfer. Low-level Radioactive Wastes. Environmental Transport. Wastes. Ground Water. Radioactive Waste Disposal. Water. Waste Disposal. Oxygen Compounds. Mobility. Elements. Underground Disposal. Sorption. Research Programs. Nickel. Management. Materials. Actinides. Metals. Numerical Data. Radioactive Wastes. Waste Management. Diffusion. Transuranium Elements. Transition Elements. Adsorption. Data. Radioactive Materials. Hydrogen Compounds. Plutonium. Radionuclide Migration. Management Of Radioactive And Non-radioactive Wastes From Nuclear Facilities. Nuclear Fuel Cycle And Fuel Materials. Environmental Sciences.

Description
Abstract:	The results obtained during the third quarter's activities of a project whose objective is to determine how and to what extent organic complexants affect the mobility of toxic elements in subsurface groundwaters at commercial low-level waste disposal sites are described. This project will study nonradioactive toxic elements as well as elements having radioactive isotopes of importance (e.g. ⁶³Ni, ²³⁹Pu, ²⁴¹Am). Organic complexants used in the nuclear industry are being emphasized, but others are being examined. Generic soil components (e.g. hydrous oxides, silica, clays) are being used so that the results will be broadly applicable. Substantiation of the previously indicated sorption of a Pu(IV)-EDTA complex by hydrous ferric oxide (Fe₂O₃.xH₂O) was obtained by comparing the sorption of EDTA in the presence and absence of Pu. Additional data on the sorption of a Ni-EDTA complex by Fe₂O₃.xH₂O were also obtained. Preliminary Ni sorption data were obtained with other complexants (picolinic acid and citric acid), and another generic soil component (TiO₂). Sorption of a Ni-EDTA complex by an anion exchange resin was observed. Complexed species are thus likely to be present in the resin wastes from certain reactor decontamination solution clean-up operations. An experimental problem that caused some erroneous results for uncomplexed Ni was discovered and corrected. The filters being used to assure good separation of solid and liquid phases were removing Ni from solution, which skewed some earlier results. 11 references, 13 figures, 2 tables.
Item Description:	Published through the Information Bridge: DOE Scientific and Technical Information. 06/01/1984. "pnl-4965-3" "DE84014810" Swanson, J.L.