Radionuclide transport and retardation in tuff

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Batch measurements provide an understanding of which experimental variables are important. For example, sorption ratios vary little with particle size (and surface area); however, groundwater composition and rock composition are quite important. A general correlation has been identified between mineralogy (major phases) and degree of sorption for strontium, cesium, and barium. Although these are approximate, a more detailed analysis may be possible as more samples are studied and the data base increased. Data from crushed tuff columns indicate that, except in simple cases where sorption coefficients are relatively low, and ion-exchange equilibria not only exist but are the dominant mechanism ... continued below

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9 p.

Creation Information

Vine, E.N.; Bayhurst, B.P.; Daniels, W.R.; DeVilliers, S.J.; Erdal, B.R.; Lawrence, F.O. et al. December 31, 1980.

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Description

Batch measurements provide an understanding of which experimental variables are important. For example, sorption ratios vary little with particle size (and surface area); however, groundwater composition and rock composition are quite important. A general correlation has been identified between mineralogy (major phases) and degree of sorption for strontium, cesium, and barium. Although these are approximate, a more detailed analysis may be possible as more samples are studied and the data base increased. Data from crushed tuff columns indicate that, except in simple cases where sorption coefficients are relatively low, and ion-exchange equilibria not only exist but are the dominant mechanism for removal of radioisotopes from solution, the simple relation between the sorption ratio R/sub d/ (or K/sub d/) and the relative velocity of radionuclides with respect to groundwater velocity may be insufficient to permit accurate modeling of the retardation of radionuclides. Additional work on whole core columns and larger blocks of intact material is required to better understand radionuclide sorption and transport through rock.

Physical Description

9 p.

Notes

NTIS, PC A02/MF A01

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  • 3. annual meeting of the Materials Research Society, Boston, MA (United States), 17-20 Nov 1980

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  • Report No.: LA-UR--80-2949
  • Report No.: CONF-801124--13
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 59110
  • Archival Resource Key: ark:/67531/metadc692566

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  • December 31, 1980

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 3, 2016, 3:41 p.m.

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Vine, E.N.; Bayhurst, B.P.; Daniels, W.R.; DeVilliers, S.J.; Erdal, B.R.; Lawrence, F.O. et al. Radionuclide transport and retardation in tuff, article, December 31, 1980; New Mexico. (digital.library.unt.edu/ark:/67531/metadc692566/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.