Decomposition of Methylene Blue in an Aqueous Solution using a Pulsed-discharge Plasma at Atmospheric Pressure

2009 ◽  
Vol 129 (4) ◽  
pp. 237-244 ◽  
Author(s):  
Shin Ikoma ◽  
Kohki Satoh ◽  
Hidenori Itoh
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

scholarly journals Glycine Oligomerization by Pulsed Discharge Plasma over Aqueous Solution under Atmospheric Pressure

2018 ◽  
Vol 2 (2) ◽  
pp. 17
Author(s):  
Yui Hayashi ◽  
Wahyu Diono ◽  
Noriharu Takada ◽  
Hideki Kanda ◽  
Motonobu Goto
Keyword(s):  
Aqueous Solution ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Synthesis of silver nanoparticles by atmospheric-pressure pulsed discharge plasma in a slug flow system

2018 ◽  
Vol 58 (1) ◽  
pp. 016001 ◽  
Author(s):  
Motoki Yamada ◽  
Shigenori Takahashi ◽  
Wahyudiono ◽  
Noriharu Takada ◽  
Hideki Kanda ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Atmospheric Pressure ◽  
Slug Flow ◽  
Discharge Plasma ◽  
Flow System ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

scholarly journals Atmospheric-Pressure Pulsed Discharge Plasma in a Slug Flow Reactor System for the Synthesis of Gold Nanoparticles

ACS Omega ◽  
2020 ◽  
Vol 5 (28) ◽  
pp. 17679-17685
Author(s):  
Motoki Yamada ◽  
Wahyudiono ◽  
Siti Machmudah ◽  
Hideki Kanda ◽  
Yaping Zhao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Atmospheric Pressure ◽  
Slug Flow ◽  
Discharge Plasma ◽  
Flow Reactor ◽  
Reactor System ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Characterization of pulsed discharge plasma at atmospheric pressure

2007 ◽  
Vol 201 (13) ◽  
pp. 6101-6104 ◽  
Author(s):  
Lekha Nath Mishra ◽  
Kanetoshi Shibata ◽  
Hiroaki Ito ◽  
Noboru Yugami ◽  
Yasushi Nishida
Keyword(s):  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Decomposition of methyl orange using pulsed discharge plasma at atmospheric pressure: Effect of different electrodes

2013 ◽  
Vol 53 (1) ◽  
pp. 010212 ◽  
Author(s):  
Yui Hayashi ◽  
Wahyudiono ◽  
Siti Machmudah ◽  
Noriharu Takada ◽  
Hideki Kanda ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Pressure Effect ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

scholarly journals Enhanced removal of acid orange II from aqueous solution by V and N co-doping TiO2-MWCNTs/γ-Al2O3 composite photocatalyst induced by pulsed discharge plasma

2020 ◽  
Author(s):  
Guangzhou Qu ◽  
Hui Wang ◽  
Xin Li ◽  
Tiecheng Wang ◽  
Zengqiang Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Discharge Plasma ◽  
Orange Ii ◽  
Pulsed Discharge ◽  
Composite Photocatalyst ◽  
Co Doping ◽  
Al2o3 Composite ◽  
Acid Orange Ii ◽  
Pulsed Discharge Plasma

Abstract This paper presents a study of V and N co-doping TiO2 embedding multi-walled carbon nanotubes (MWCNTs) supported on γ-Al2O3 pellet (V/N-TiO2-MWCNTs/γ-Al2O3) composite photocatalyst induced by pulsed discharge plasma to enhance the removal of Acid orange II (AO7) from aqueous solution. The photocatalytic activity of the V/N-TiO2-MWCNTs/γ-Al2O3 composite to AO7 removal induced by the pulsed discharge plasma was evaluated. The results indicate that the V/N-TiO2-MWCNTs/γ-Al2O3 composite possesses enhanced photocatalytic activity that facilitates the removal of AO7 compared with the TiO2-MWCNTs/γ-Al2O3 and TiO2/γ-Al2O3 composites. Almost 100% of AO7 is removed after 10 min under optimal conditions. The V0.10/N0.05-TiO2-MWCNTs/γ-Al2O3 photocatalyst exhibits the best removal effect for AO7. Analysis of the removal mechanism indicates that the enhancement of the removal of AO7 resulting from V and N co-doping causes TiO2 lattice distortion and introduces a new impurity energy level, which not only reduces the band gap of TiO2 but also inhibits the recombination of the pairs.

Decoloration of Organic Dye in Water by Pulsed Discharge Plasma Generated Simultaneously in Gas and Liquid Media

2005 ◽  
Vol 8 (2) ◽  
Author(s):  
Masayuki Sato ◽  
Daigo Kon-no ◽  
Takayuki Ohshima ◽  
Anto Tri Sugiarto
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
High Voltage ◽  
Discharge Plasma ◽  
Plasma Reactor ◽  
Porous Ceramic ◽  
High Energy ◽  
Water Phase ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

AbstractA new process for decomposing organic contaminants in water was proposed. Pulsed discharge plasma was generated in the gas phase, and the produced plasma was permeated through a pinhole into the water phase. Water (upper) and gas (lower) were separated by an insulating plate, where a pinhole was perforated at the center of the plate. Gas was bubbled into the water phase through the pinhole. In the gas phase, the high voltage pulse was applied between the needle electrode and the ground electrode (immersed in the water phase). The high voltage pulsed discharge plasma was generated in the gas phase, simultaneously the plasma channel was permeated into the water phase accompanying by the gas bubbles. The water phase plasma produced a lot of active species, UV light, and high-energy electrons. Porous ceramic tube was tried to use for producing water phase plasma, instead of the insulating plate in a pinhole reactor. It was observed that the gas phase plasma also permeated through many small pores into the water and generated streamer discharge in water. Chicago sky blue aqueous solution was effectively decolored with oxygen gas bubbling than the cases of argon gas and air. With applying pulsed voltage of 20 kV and pulse frequency of 25 Hz with 500 mL/min oxygen bubbling, the dye aqueous solution with 10 ppm initial concentration was decolored about 95% in 10 min treatment. The decoloration rate increased with increasing electrical conductivity of the solution. This type of simultaneous discharge plasma reactor is expected to have high-energy efficiency degradation rate.

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