Speciation, Dissolution, and Redox Reactions of Chromium Relevant to Pretreatment and Separation of High-Level Tank Wastes

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Pacific Northwest and Lawrence Berkeley National Laboratories, in collaboration with Washington State University, are developing fundamental data on the precipitation/dissolution reactions of Cr(III) compounds and the kinetics of oxidation of Cr(III) to Cr(VI) at room and elevated temperatures and under conditions relevant to high-level waste (HLW) processing. This integrated approach, which involves measuring solubility and oxidation rate constants and spectroscopic characterization of aqueous and solid species as a function of ionic strength, alkalinity, redox conditions, and temperature, will provide thermodynamic and kinetic data. These data are necessary to predict changes in chromium solubility and speciation in response to changes in ... continued below

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Rai, Dhanpat; Rao, Linfeng; Clark, Sue B. & Hess,Nancy J. June 1, 1999.

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Pacific Northwest and Lawrence Berkeley National Laboratories, in collaboration with Washington State University, are developing fundamental data on the precipitation/dissolution reactions of Cr(III) compounds and the kinetics of oxidation of Cr(III) to Cr(VI) at room and elevated temperatures and under conditions relevant to high-level waste (HLW) processing. This integrated approach, which involves measuring solubility and oxidation rate constants and spectroscopic characterization of aqueous and solid species as a function of ionic strength, alkalinity, redox conditions, and temperature, will provide thermodynamic and kinetic data. These data are necessary to predict changes in chromium solubility and speciation in response to changes in pretreatment strategies or to develop cost-effective tank waste processing technologies that result from reducing the total amount of chromium in processed waste.

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  • Other Information: PBD: 1 Jun 1999

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  • Report No.: EMSP-65368--1999
  • Grant Number: FG07-98ER14930
  • DOI: 10.2172/833241 | External Link
  • Office of Scientific & Technical Information Report Number: 833241
  • Archival Resource Key: ark:/67531/metadc780572

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  • June 1, 1999

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 21, 2016, 4:09 p.m.

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Rai, Dhanpat; Rao, Linfeng; Clark, Sue B. & Hess,Nancy J. Speciation, Dissolution, and Redox Reactions of Chromium Relevant to Pretreatment and Separation of High-Level Tank Wastes, report, June 1, 1999; United States. (digital.library.unt.edu/ark:/67531/metadc780572/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.