Dependence of radionuclide sorption on sample grinding, surface area, and water composition

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In its 1987 technical position paper, ``Determination of Radionuclide Sorption for High-Level Nuclear Waste Repositories``, the Nuclear Regulatory Commission (NRC) review panel delineated several studies needed to show that experimental sorption coefficients could accurately model radionuclide sorption behavior along release pathways. In particular, they focused on the potential problems involved with the use of crushed rock samples, stating ``If crushed solids are used, it is essential to show that laboratory experiments involving sorption on crushed solids are relevant to the repository site. The surfaces of crushed material may be significantly different from the surfaces of intact material, both porous and ... continued below

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8 p.

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Rogers, P. S. Z. & Meijer, A. February 1993.

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Description

In its 1987 technical position paper, ``Determination of Radionuclide Sorption for High-Level Nuclear Waste Repositories``, the Nuclear Regulatory Commission (NRC) review panel delineated several studies needed to show that experimental sorption coefficients could accurately model radionuclide sorption behavior along release pathways. In particular, they focused on the potential problems involved with the use of crushed rock samples, stating ``If crushed solids are used, it is essential to show that laboratory experiments involving sorption on crushed solids are relevant to the repository site. The surfaces of crushed material may be significantly different from the surfaces of intact material, both porous and fractured. Grinding may expose the surfaces of solid phases different from those which groundwater would contact in a repository and/or may change the reactivity of the same mineral surfaces with dissolved radionuclides. The surface of crushed minerals can be enriched in certain elements by factors of two and three relative to the bulk composition. The experiments reported here were performed in direct response to the NRC technical position paper.

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8 p.

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INIS; OSTI as DE93007371

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  • 10. international high-level radioactive waste management conference, Las Vegas, NV (United States), 25-29 Apr 1993

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  • Other: DE93007371
  • Report No.: LA-UR--93-270
  • Report No.: CONF-930408--18
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 138786
  • Archival Resource Key: ark:/67531/metadc625004

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 1993

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 1:51 p.m.

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Rogers, P. S. Z. & Meijer, A. Dependence of radionuclide sorption on sample grinding, surface area, and water composition, article, February 1993; New Mexico. (digital.library.unt.edu/ark:/67531/metadc625004/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.