Treatment of Dye Wastewater by Using a Hybrid Gas/Liquid Pulsed Discharge Plasma Reactor

LU Na(鲁娜); LI Jie(李杰); WU Yan(吴彦); Masayuki Sato(佐藤正之)

doi:10.1088/1009-0630/14/2/15

Plasma Science and Technology > 2012 > 14(2): 162-166. > DOI: 10.1088/1009-0630/14/2/15

LU Na(鲁娜), LI Jie(李杰), WU Yan(吴彦), Masayuki Sato(佐藤正之). Treatment of Dye Wastewater by Using a Hybrid Gas/Liquid Pulsed Discharge Plasma Reactor[J]. Plasma Science and Technology, 2012, 14(2): 162-166. DOI: 10.1088/1009-0630/14/2/15

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Treatment of Dye Wastewater by Using a Hybrid Gas/Liquid Pulsed Discharge Plasma Reactor

1 Institute of Electrostatics and Special Power, Dalian University of Technology, Dalian 116024, China 2 Department of Chemical & Environmental Engineering, Faculty of Engineering, Gunma University, Kiryu, Tenjin-cho 1-5-1, 376-8515, Japan

Funds: supportby the Program for Liaoning Excellent Talents in University, China (Project No. 2009R09), National Natural Science Foundation, P.R. China (Project No. 40901150) and 863 Program of Chian(No. 2009AA064101-4)

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Received Date: August 05, 2011

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Abstract

Abstract

A hybrid gas/liquid pulsed discharge plasma reactor using a porous ceramic tube is proposed for dye wastewater treatment. High voltage pulsed discharge plasma was generated in the gas phase and simultaneously the plasma channel was permeated through the tiny holes of the ceramic tube into the water phase accompanied by gas bubbles. The porous ceramic tube not only separated the gas phase and liquid phase but also offered an effective plasma spreading channel. The effects of the peak pulse voltage, additive gas varieties, gas bubbling rate, solution conductivity and TiO2 addition were investigated. The results showed that this reactor was effective for dye wastewater treatment. The decoloration efficiency of Acid Orange II was enhanced with an increase in the power supplied. Under the studied conditions, 97% of Acid Orange II in aqueous solution was effectively decolored with additive oxygen gas, which was 51% higher than with argon gas, and the increasing O2 bubbling rate also benefited the decoloration of dye wastewater. Water conductivity had a small effect on the level of decoloration. Catalysis of TiO2 could be induced by the pulsed discharge plasma and addition of TiO2 aided the decoloration of Acid Orange II.
- Pulsed discharge plasma,
- porous ceramic tube,
- dye wastewater,
- decoloration

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