Optimization of magnetite carrier precipitation process for transuranic waste reduction

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Transuranic (TRU) waste that is being generated at Argonne National Laboratory has a TRU activity ranging from 10{sup 2} to 10{sup 7} nCi/g with a wide variety of chemical compositions. Currently, the waste is stored in highly acidic solutions that must be neutralized for intermediate storage. A magnetite carrier precipitation process has been adapted to concentrate TRU isotopes in a noncorrosive solid phase. In this paper, the authors report the results of a series of laboratory tests done to optimize the process. The parameters they optimized included (1) magnetite concentration used to precipitate the TRUs from solution, (2) formation of ... continued below

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19 p.

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Slater, S.A.; Chamberlain, D.B.; Aase, S.A.; Babcock, B.D.; Conner, C.; Sedlet, J. et al. December 31, 1995.

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Transuranic (TRU) waste that is being generated at Argonne National Laboratory has a TRU activity ranging from 10{sup 2} to 10{sup 7} nCi/g with a wide variety of chemical compositions. Currently, the waste is stored in highly acidic solutions that must be neutralized for intermediate storage. A magnetite carrier precipitation process has been adapted to concentrate TRU isotopes in a noncorrosive solid phase. In this paper, the authors report the results of a series of laboratory tests done to optimize the process. The parameters they optimized included (1) magnetite concentration used to precipitate the TRUs from solution, (2) formation of magnetite (in situ or ex situ), (3) processing pH, and (4) temperature and mixing time of the carrier precipitation. They also studied the effects of anions, cations, and complexing agents in the waste solutions on the carrier precipitation and the effect of magnetite solids loading on the filtration equipment. An overview is given of the planned full-scale process, which will be operated in a glovebox.

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19 p.

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INIS; OSTI as DE96005531

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  • 9. symposium on separation science and technology for energy applications, Gatlinburg, TN (United States), 22-26 Oct 1995

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  • Other: DE96005531
  • Report No.: ANL/CMT/CP--86022
  • Report No.: CONF-951057--5
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 195647
  • Archival Resource Key: ark:/67531/metadc668271

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 15, 2015, 6:48 p.m.

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Slater, S.A.; Chamberlain, D.B.; Aase, S.A.; Babcock, B.D.; Conner, C.; Sedlet, J. et al. Optimization of magnetite carrier precipitation process for transuranic waste reduction, article, December 31, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc668271/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.