Radionuclide separations using pillared layered materials. Final report

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The objective of this project is to prepare an all inorganic strontium specific sorbent or ion exchanger for the removal of highly alkaline nuclear waste solutions. A series of clays and layered titanates were pillared and calcined to convert their essentially two dimensional structure to three dimensional porous structures with high surface areas. The pillaring agents were alumina, zirconia, chromia and silica based. The pillared clays, particularly those containing Zr pillars, achieved moderate (Kd as high at 13,700 ml/g with V:m = 28) selectivities for Sr{sup 2+}. In contrast, the silica pillared titanates showed exceptional affinities for Sr{sup 2+} with ... continued below

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32 p.

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Clearfield, A. August 31, 1995.

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  • Clearfield, A. Texas A and M Univ., College Station, TX (United States). Research Foundation

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Description

The objective of this project is to prepare an all inorganic strontium specific sorbent or ion exchanger for the removal of highly alkaline nuclear waste solutions. A series of clays and layered titanates were pillared and calcined to convert their essentially two dimensional structure to three dimensional porous structures with high surface areas. The pillaring agents were alumina, zirconia, chromia and silica based. The pillared clays, particularly those containing Zr pillars, achieved moderate (Kd as high at 13,700 ml/g with V:m = 28) selectivities for Sr{sup 2+}. In contrast, the silica pillared titanates showed exceptional affinities for Sr{sup 2+} with Kd values in excess of 100,000 ml/g in 5M NaNO{sup 3} + 1M NaOH. These latter results suggest a more detailed study of the pillared titanates in the presence of simulants closely resembling real waste solutions.

Physical Description

32 p.

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INIS; OSTI as DE96006841

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  • Other Information: PBD: 31 Aug 1995

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  • Other: DE96006841
  • Report No.: LA-SUB--95-220
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/206512 | External Link
  • Office of Scientific & Technical Information Report Number: 206512
  • Archival Resource Key: ark:/67531/metadc665442

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  • August 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • July 28, 2016, 7:47 p.m.

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Clearfield, A. Radionuclide separations using pillared layered materials. Final report, report, August 31, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc665442/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.