Electrolytic decontamination of conductive materials for hazardous waste management

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Electrolytic removal of plutonium and americium from stainless steel and uranium surfaces has been demonstrated. Preliminary experiments were performed on the electrochemically based decontamination of type 304L stainless steel in sodium nitrate solutions to better understand the metal removal effects of varying cur-rent density, pH, and nitrate concentration parameters. Material removal rates and changes in surface morphology under these varying conditions are reported. Experimental results indicate that an electropolishing step before contamination removes surface roughness, thereby simplifying later electrolytic decontamination. Sodium nitrate based electrolytic decontamination produced the most uniform stripping of material at low to intermediate pH and at sodium ... continued below

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11 p.

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Wedman, D.E.; Martinez, H.E. & Nelson, T.O. December 31, 1996.

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Description

Electrolytic removal of plutonium and americium from stainless steel and uranium surfaces has been demonstrated. Preliminary experiments were performed on the electrochemically based decontamination of type 304L stainless steel in sodium nitrate solutions to better understand the metal removal effects of varying cur-rent density, pH, and nitrate concentration parameters. Material removal rates and changes in surface morphology under these varying conditions are reported. Experimental results indicate that an electropolishing step before contamination removes surface roughness, thereby simplifying later electrolytic decontamination. Sodium nitrate based electrolytic decontamination produced the most uniform stripping of material at low to intermediate pH and at sodium nitrate concentrations of 200 g L{sup -1} and higher. Stirring was also observed to increase the uniformity of the stripping process.

Physical Description

11 p.

Notes

INIS; OSTI as DE97002348

Source

  • 7. ACS special symposium: emerging technologies in hazardous waste management, Atlanta, GA (United States), 17-20 Sep 1995

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  • Other: DE97002348
  • Report No.: LA-UR--96-3795
  • Report No.: CONF-9509139--11
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 431165
  • Archival Resource Key: ark:/67531/metadc680151

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 25, 2016, 4:15 p.m.

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Wedman, D.E.; Martinez, H.E. & Nelson, T.O. Electrolytic decontamination of conductive materials for hazardous waste management, article, December 31, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc680151/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.