IMMOBILIZATION OF RADIONUCLIDES IN THE HANFORD VADOSE ZONE BY INCORPORATION IN SOLID PHASES

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Specific objectives are to investigate (1) the effect of aging on the stability of sorption complexes on Al-oxide and Al-oxyhydroxide surfaces formed from neutralization and homogeneous nucleation of alkaline aluminate solutions; (2) the sorption/coprecipitation of these elements in solids formed from reaction of alkaline aluminate solutions with simple systems of representative minerals and mineral coatings found in the soils and sediments underlying the Hanford Tank Farm (e.g., quartz, feldspars, biotite, muscovite, chlorite,clay mineral, augite, hornblende, ilmenite, magnetite, hematite, Fe(III)- oxyhydroxides, and Mn(IV)-(hydr)oxides); and (3) the sorption/coprecipitation of these elements in solids formed from reaction of alkaline aluminate solutions with soil ... continued below

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Traina, Samuel J.; Grandinetti, Philip; Brown Jr., Gordon E. Ainsworth, Calvin C. & Szecsody, Jim E. June 2001.

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Description

Specific objectives are to investigate (1) the effect of aging on the stability of sorption complexes on Al-oxide and Al-oxyhydroxide surfaces formed from neutralization and homogeneous nucleation of alkaline aluminate solutions; (2) the sorption/coprecipitation of these elements in solids formed from reaction of alkaline aluminate solutions with simple systems of representative minerals and mineral coatings found in the soils and sediments underlying the Hanford Tank Farm (e.g., quartz, feldspars, biotite, muscovite, chlorite,clay mineral, augite, hornblende, ilmenite, magnetite, hematite, Fe(III)- oxyhydroxides, and Mn(IV)-(hydr)oxides); and (3) the sorption/coprecipitation of these elements in solids formed from reaction of alkaline aluminate solutions with soil and sediment samples obtained from the Hanford site. (4) To couple these laboratory studies to precipitation processes occurring in the Hanford vadose zone beneath the Tank Farm, we also propose to characterize the particle coatings and precipitate phases in core samples from this zone. These investigations will utilize X-ray Absorption Fine Structure (XAFS) spectroscopy, vibrational spectroscopy, NMR spectroscopy, electron and X-ray microprobe analyses, transmission electron microscopy, X-ray photoelectron spectroscopy, and other characterization studies of the speciation and spatial distribution of the these ions in several model systems chosen to simulate the natural systems.

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  • Other Information: PBD: 1 Jun 2001

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  • Report No.: EMSP-70081--20012
  • Grant Number: FG07-99ER15022
  • Grant Number: FG07-99ER15010
  • DOI: 10.2172/833515 | External Link
  • Office of Scientific & Technical Information Report Number: 833515
  • Archival Resource Key: ark:/67531/metadc781102

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  • June 2001

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 21, 2016, 6:36 p.m.

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Traina, Samuel J.; Grandinetti, Philip; Brown Jr., Gordon E. Ainsworth, Calvin C. & Szecsody, Jim E. IMMOBILIZATION OF RADIONUCLIDES IN THE HANFORD VADOSE ZONE BY INCORPORATION IN SOLID PHASES, report, June 2001; United States. (digital.library.unt.edu/ark:/67531/metadc781102/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.