Parametric Optimization of the MEO Process for Treatment of Mixed Waste Residues
Conference
·
OSTI ID:758950
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.
- Research Organization:
- Los Alamos National Lab., NM (US)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM) (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 758950
- Report Number(s):
- LA-UR-99-598
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of silver(II), cobalt(III), and cerium(IV) as electron transfer mediators in the MEO mixed waste treatment process
Mediated electrochemical oxidation as an alternative to incineration for mixed wastes
Silver removal process development for the MEO cleanout
Conference
·
Fri Oct 31 23:00:00 EST 1997
·
OSTI ID:548643
Mediated electrochemical oxidation as an alternative to incineration for mixed wastes
Conference
·
Tue Jan 31 23:00:00 EST 1995
·
OSTI ID:32526
Silver removal process development for the MEO cleanout
Technical Report
·
Wed Jan 31 23:00:00 EST 1996
·
OSTI ID:231372