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Purification of High-Conductivity Water Using Gas-Liquid Phase Discharge Reactor

Takahashi, K ; Sasaki, Y ; Mukaigawa, S ; Takaki, K ; Fujiwara, T ; Satta, N

IEEE transactions on plasma science, 2010-10, Vol.38 (10), p.2694-2700 [Periódico revisado por pares]

New York: IEEE

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Título:
Purification of High-Conductivity Water Using Gas-Liquid Phase Discharge Reactor
Autor: Takahashi, K ; Sasaki, Y ; Mukaigawa, S ; Takaki, K ; Fujiwara, T ; Satta, N
Assuntos: Chemical reactions ; Chlorides ; Conductivity ; Decoloring ; Discharge ; Electric power ; Electrodes ; Energy efficiency ; Gas phases ; Groundwater discharge ; High conductivity ; High voltages ; Inductors ; Ions ; Nitrogen ; ozone ; Planes ; Pollutants ; Pulse generation ; Purification ; Reactors ; Solution chemistry ; streamer discharge ; Voltage ; Water pollution ; water purification ; Wire
É parte de: IEEE transactions on plasma science, 2010-10, Vol.38 (10), p.2694-2700
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: Water purification by streamer discharge using pulsed-power generator under a high-conductivity water containing pollutants has been investigated. A gas-liquid separated reactor was developed to treat highly conductive solution. A wire electrode was placed in the gas phase and a plane electrode was immersed in the water. A pulsed high voltage generated by six stacked Blumlein lines was applied to the wire electrode to generate streamer discharge in the gas phase, which propagated into the air bubble injected into the water. Indigo carmine solution was employed as a specimen. Natrium chloride was used to adjust the solution conductivity in the range from 10 to 30 000 S/cm. A solution with 30 000- S/cm conductivity was successfully decolorized with energy efficiency of 75 mg/Wh. Some species of gas such as air, oxygen, nitrogen, and argon were injected to clarify dominant reactions of the decolorization. The result showed that the ozone produced by gas-phase discharges mainly contributed to the decolorization of the solution. The decolorization rate depended on the chloride ion supplied from the natrium chloride by scavenging of hydroxyl radical and on the copper ion eluted from the plane electrode by redox reactions such as Fenton reactions.
Editor: New York: IEEE
Idioma: Inglês

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Purification of High-Conductivity Water Using Gas-Liquid Phase Discharge Reactor

Takahashi, K ; Sasaki, Y ; Mukaigawa, S ; Takaki, K ; Fujiwara, T ; Satta, N

New York: IEEE

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