Next Generation Extractants for Cesium Separation from High-Level Waste: From Fundamental Concepts to Site Implementation

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Calix[4]arenebiscrown-6 molecules are currently the selected technology for removal of radioactive cesium-137 from DOE nuclear wastes. By attachment of an acidic function to such molecules, the efficiency with which cesium ion can be extracted from an aqueous solution into an organic diluent is markedly increased since the requirement for concomitant extraction of an aqueous phase anion is avoided. Thus, cesium ion extraction by proton-ionizable calix[4]arenebiscrown-6 molecules may be the ''second-generation'' technology for removal of cesium-137 from DOE nuclear wastes. During Year 1 of this EMSP project, we have established synthetic routes to new, lipophilic, proton-ionizable calix[4]arenebiscrown-6 molecules to be evaluated ... continued below

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Moyer, Bruce A. & Bartsch, Richard A. June 1, 2003.

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Calix[4]arenebiscrown-6 molecules are currently the selected technology for removal of radioactive cesium-137 from DOE nuclear wastes. By attachment of an acidic function to such molecules, the efficiency with which cesium ion can be extracted from an aqueous solution into an organic diluent is markedly increased since the requirement for concomitant extraction of an aqueous phase anion is avoided. Thus, cesium ion extraction by proton-ionizable calix[4]arenebiscrown-6 molecules may be the ''second-generation'' technology for removal of cesium-137 from DOE nuclear wastes. During Year 1 of this EMSP project, we have established synthetic routes to new, lipophilic, proton-ionizable calix[4]arenebiscrown-6 molecules to be evaluated for solvent extraction of cesium ion at Oak Ridge National Laboratory. Analogous calix[4]arenecrown-6 compounds are also being prepared to determine if even higher cesium ion selectivities can be obtained with extractants having a single crown ether unit.

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  • Other Information: PBD: 1 Jun 2003

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  • Report No.: EMSP-90252--2003
  • DOI: 10.2172/839359 | External Link
  • Office of Scientific & Technical Information Report Number: 839359
  • Archival Resource Key: ark:/67531/metadc783414

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  • June 1, 2003

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  • Dec. 3, 2015, 9:30 a.m.

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  • Nov. 3, 2016, 7:39 p.m.

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Moyer, Bruce A. & Bartsch, Richard A. Next Generation Extractants for Cesium Separation from High-Level Waste: From Fundamental Concepts to Site Implementation, report, June 1, 2003; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc783414/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.