Thermal and Chemical Stability of Crystalline Silicotitanate Sorbent

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The Savannah River Site (SRS) is evaluating technologies for removing cesium-137 (137Cs) from the supemate solutions stored in the high-level waste tanks at the site. Crystalline silicotitanate sorbent (IONSIV IE-9 1 lo, UOP Molecular Sieves; Mount Laurel, NJ) is very effective for removing cesium from high-salt solution, such as the SRS supemates, and is currently being used at Oak Ridge National Laboratory to remove radioactive cesium from similar solutions, Because of the extremely high loading of 137Cs that would be expected for the large columns of crystalline silicotitanate (CST) that would be used for treating the SRS supemate, any loss ... continued below

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Taylor, P. A. & Mattus, C. H. October 1999.

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Description

The Savannah River Site (SRS) is evaluating technologies for removing cesium-137 (137Cs) from the supemate solutions stored in the high-level waste tanks at the site. Crystalline silicotitanate sorbent (IONSIV IE-9 1 lo, UOP Molecular Sieves; Mount Laurel, NJ) is very effective for removing cesium from high-salt solution, such as the SRS supemates, and is currently being used at Oak Ridge National Laboratory to remove radioactive cesium from similar solutions, Because of the extremely high loading of 137Cs that would be expected for the large columns of crystalline silicotitanate (CST) that would be used for treating the SRS supemate, any loss of flow or cooling to the columns could result in high temperatures within the column from radiolytic heating. The ability of CST to retain previously loaded cesium while in contact with SRS tank supemates at various temperatures was determined by performing bench scale simulant tests using CST samples that were loaded with stable cesium and radi oactive cesium tracer. These results were compared with those obtained from loading tests at the same temperatures.

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INIS; OSTI as DE00750983

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  • Other Information: PBD: 1 Oct 1999

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  • Report No.: ORNL/TM-1999/233
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/750983 | External Link
  • Office of Scientific & Technical Information Report Number: 750983
  • Archival Resource Key: ark:/67531/metadc708811

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  • October 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • Jan. 22, 2016, 7:12 p.m.

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Taylor, P. A. & Mattus, C. H. Thermal and Chemical Stability of Crystalline Silicotitanate Sorbent, report, October 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc708811/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.