Parametric Optimization of the MEO Process for Treatment of Mixed Waste Residues

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A series of bench-scale experiments were conducted to determine the optimum reaction conditions for destruction of styrene-divinyl benzene based cation resin and methylene chloride by the mediated electrochemical oxidation (MEO) process. Reaction parameters examined include choice of electron transfer mediator, reaction temperature and solvent system. For the cation exchange resins, maximum destruction efficiencies were obtained using cerium (IV) as mediator in nitric acid at a temperature of 70 C. Reasonable efficiencies were also realized with silver(II) and cobalt (III) at ambient temperature in the same solvent. Use of sulfuric acid as the solvent yielded much lower efficiencies under equivalent conditions. ... continued below

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Cournoyer, M. E. & Smith, W. H. February 28, 1999.

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A series of bench-scale experiments were conducted to determine the optimum reaction conditions for destruction of styrene-divinyl benzene based cation resin and methylene chloride by the mediated electrochemical oxidation (MEO) process. Reaction parameters examined include choice of electron transfer mediator, reaction temperature and solvent system. For the cation exchange resins, maximum destruction efficiencies were obtained using cerium (IV) as mediator in nitric acid at a temperature of 70 C. Reasonable efficiencies were also realized with silver(II) and cobalt (III) at ambient temperature in the same solvent. Use of sulfuric acid as the solvent yielded much lower efficiencies under equivalent conditions. Methylene chloride was found to react only with silver (II) at ambient temperature in nitric acid media, cobalt (III) and cerium (IV) were totally ineffective. These results demonstrate a need to perform bench-scale experiments to determine optimum operating conditions for each organic substrate targeted for treatment by the MEO process.

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Medium: P; Size: vp.

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OSTI as DE00758950

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  • Waste Management '99, Tucson, AZ (US), 02/28/1999--03/04/1999

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  • Report No.: LA-UR-99-598
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 758950
  • Archival Resource Key: ark:/67531/metadc703394

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Office of Scientific & Technical Information Technical Reports

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  • February 28, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 21, 2016, 6:45 p.m.

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Cournoyer, M. E. & Smith, W. H. Parametric Optimization of the MEO Process for Treatment of Mixed Waste Residues, article, February 28, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc703394/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.