Silver removal process development for the MEO cleanout

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Description

The Mediated Electrochemical Oxidation (MEO) system is an aqueous process which treats low-level mixed wastes by oxidizing the organic components of he waste into carbon dioxide and water. As MEO system continues to run, dissolved ash and radionuclides slowly accumulate in the anolyte and must be removed to maintain process efficiency. At such time, all of the anolyte is pumped into a still feed tank, and the silver ions need to be removed before sending the solution to a thin-film evaporator for further concentration. The efficiency of removing silver ions in the solution needs to be high enough such that ... continued below

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12 p.

Creation Information

Hsu, P.C.; Chiba, Z.; Schumacher, B.J.; Murguia, L.C. & Adamson, M.G. February 1, 1996.

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Description

The Mediated Electrochemical Oxidation (MEO) system is an aqueous process which treats low-level mixed wastes by oxidizing the organic components of he waste into carbon dioxide and water. As MEO system continues to run, dissolved ash and radionuclides slowly accumulate in the anolyte and must be removed to maintain process efficiency. At such time, all of the anolyte is pumped into a still feed tank, and the silver ions need to be removed before sending the solution to a thin-film evaporator for further concentration. The efficiency of removing silver ions in the solution needs to be high enough such that the residual silver sent to Final Forms would be less than 1% wt. The purpose of this work is to develop an efficient process to remove silver ions during the MEO cleanout and to demonstrate the capability of centrifugation for separating small silver chloride particles from the solution. This development work includes lab scale experiments and bench scale tests. This report summarizes the results.

Physical Description

12 p.

Notes

INIS; OSTI as DE96010758

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  • Other Information: PBD: Feb 1996

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  • Other: DE96010758
  • Report No.: UCRL-ID--123601
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/231372 | External Link
  • Office of Scientific & Technical Information Report Number: 231372
  • Archival Resource Key: ark:/67531/metadc667248

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Creation Date

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 23, 2016, 3:34 p.m.

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Hsu, P.C.; Chiba, Z.; Schumacher, B.J.; Murguia, L.C. & Adamson, M.G. Silver removal process development for the MEO cleanout, report, February 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc667248/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.