Effect of Iron Addition on the Decomposition of Dye by Pulsed Discharge in Air With Water Droplets Spray

The effect of iron addition in the treated solution on the decomposition of indigo carmine is reported. The effect of iron addition was evaluated for various Fe 2+ concentrations ranging from 0 to 118 μmol/L (μM). The decolorization rate and efficiency with Fe 2+ addition were higher than those with...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2012-12, Vol.40 (12), p.3465-3470
Main Authors: Nose, T., Yokoyama, Y.
Format: Article
Language:English
Subjects:
Chemical reactions
Chemicals
Decomposition
Discharges (electric)
Dyes
Electric currents
Iron
Iron addition
Organic compounds
organic pollutants
Performance evaluation
pulsed discharge
water droplets spray
Water pollution
water pollution control
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Summary:The effect of iron addition in the treated solution on the decomposition of indigo carmine is reported. The effect of iron addition was evaluated for various Fe 2+ concentrations ranging from 0 to 118 μmol/L (μM). The decolorization rate and efficiency with Fe 2+ addition were higher than those without Fe 2+ and increased with the rise in Fe 2+ concentrations. The optimal Fe 2+ concentrations for decolorization rate and efficiency were 95 and 83 μM, respectively. The pH effect was evaluated in the range of 2.3-11.3 values for the initial solution containing 71 μM Fe 2+ . The decolorization rate was approximately constant for pH ranging from 4.7 to 8.0. The increases in decolorization rate and efficiency with Fe 2+ are attributed to a significant increase in hydroxyl radicals quantity, which is generated by Fenton's reaction of iron and hydrogen peroxide.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2012.2219596