Results of Long-Term Deep Liquid Radioactive Waste Injection Site Operation at the Siberian Chemical Combine

Zubkov, A.A.; Ryabov, A. S.; Sukhorukov, V. A.; Danilov, V. V.; Rybalchenko, A.I.

doi:10.1016/s0167-5648(05)52037-9

Cited by 7 publications

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“…This study is performed for the needs of performance assessment at the liquid nuclear waste injection site at Siberian Chemical Combine, SCC. The wastes at SCC are injected at two sites [7,8]. Low-level radioactive wastes are deposited at the first site in the geological horizons II and III located at the depths of 349-386 m and 270-320 m below sea level, respectively.…”

Section: Xoh Expðàfc=rtþmentioning

confidence: 99%

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Sorption and Speciation of Uranium on Silica Colloids

Batuk

Shiryaev

Kalmykov

et al. 2011

Actinide Nanoparticle Research

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Sorption behavior of uranium onto silica colloids is studied to derive surface complexation data. Several spectroscopic and structural methods, i.e., Time-resolved Laser-induced Fluorescence (TRLIF), X-ray Absorption Fine Structure (XAFS), and Small-angle X-ray Scattering (SAXS) are employed for characterization of colloid suspensions and surface-sorbed species. TRLIF and EXAFS allowed identification of two principal uranium species on the silica surfacebidentate coordinated uranyl complexes of the following stoichiometries (SiO) 2 UO 2 and (SiO) 2 UO 2 OH À . No polynuclear species or surface precipitates are formed as shown by EXAFS and SAXS examination of suspensions at various silica/uranium ratios. However, when uranium coverage of the silica surface exceeds 7%, the colloid stability as determined by electrophoretic mobility increases. Potentially, this could affect colloid-facilitated transport.

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Section: Xoh Expðàfc=rtþmentioning

confidence: 99%

“…The distance from the center of the site to its boundaries is 1.6-2.0 km. The types of liquid nuclear wastes that are injected are alkaline lowlevel wastes with pH 8.0-10.5 [8] [8]. Upon the interaction of the wastes with quartz sands, amorphous silica is formed, which could be responsible for the radionuclide sorption.…”

Section: Xoh Expðàfc=rtþmentioning

confidence: 99%