Mediated electrochemical oxidation of organic wastes using a Co (III) mediator in a nitric acid based system

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872328

Balazs, G Bryan ^[1]; Chiba, Zoher ^[2]; Lewis, Patricia R ^[1]; Nelson, Norvell ^[3]; Steward, G Anthony ^[4]

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1. Livermore, CA
2. Moraga, CA
3. Palo Alto, CA
4. Los Altos Hills, CA

An electrochemical cell with a Co(III) mediator and nitric acid electrolyte provides efficient destruction of organic and mixed wastes. The organic waste is concentrated in the anolyte reservoir, where the mediator oxidizes the organics and insoluble transuranic compounds and is regenerated at the anode until the organics are converted to CO.sub.2. The nitric acid is an excellent oxidant that facilitates the destruction of the organic components. The anode is not readily attacked by the nitric acid solution, thus the cell can be used for extended continual operation without electrode replacement.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5911868
• OSTI ID: 872328
• Country of Publication: United States
• Language: English

Related Subjects

mediated
electrochemical
oxidation
organic
wastes
iii
mediator
nitric
acid
based
cell
electrolyte
provides
efficient
destruction
mixed
waste
concentrated
anolyte
reservoir
oxidizes
organics
insoluble
transuranic
compounds
regenerated
anode
converted
excellent
oxidant
facilitates
components
readily
attacked
solution
extended
continual
operation
electrode
replacement
acid electrolyte
organic components
mixed waste
mixed wastes
acid solution
nitric acid
electrochemical cell
organic waste
electrochemical oxidation
mediated electrochemical
acid base
organic wastes
provides efficient
organic component
acid based
chemical oxidation
efficient destruction
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