Phenol Decomposition by Pulsed-Discharge Plasma Above a Water Surface in Oxygen and Argon Atmosphere

2013 ◽  
Vol 184 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Haruki Shiota ◽  
Hideyuki Itabashi ◽  
Kohki Satoh ◽  
Hidenori Itoh
Keyword(s):  
Water Surface ◽  
Discharge Plasma ◽  
Argon Atmosphere ◽  
Pulsed Discharge ◽  
Phenol Decomposition ◽  
Pulsed Discharge Plasma

scholarly journals A Novel Wastewater Treatment Method Using Electrical Pulsed Discharge Plasma over a Water Surface

2021 ◽  
Author(s):  
Katsuyuki Takahashi ◽  
Koichi Takaki ◽  
Naoya Satta
Keyword(s):  
Wastewater Treatment ◽  
Organic Compounds ◽  
Water Surface ◽  
High Speed ◽  
Discharge Plasma ◽  
Chemical Properties ◽  
Oxidation Potential ◽  
Pulsed Discharge ◽  
Persistent Organic Compounds ◽  
Pulsed Discharge Plasma

Electrical pulsed discharge plasma produces various powerful oxidizing agents, such as hydroxyl radicals and ozone, which have high oxidation potential. These species play an important role in the decomposition of persistent organic compounds in wastewater. Because highly concentrated oxidants are directly produced inside the plasma, plasma realizes high-speed wastewater treatment without pretreatment of samples, such as pH adjustment. The pulsed discharge plasma generated over the water surface and inside bubbles is highlighted as a highly efficient method for plasma generation and radical supply into wastewater. In this paper, the physical and chemical properties of the discharge plasma generated over a water surface are described. The decomposition of persistent organic compounds dissolved in wastewater, such as 1,4-dioxane, formic acid, and dichloromethane, by plasma discharge is demonstrated, and their mechanisms are discussed. These persistent compounds, which have strong toxicity and stability, can be efficiently decomposed and removed quickly from solutions by plasma treatment. Furthermore, the treatment of nutrient solutions used in hydroponic systems for plant cultivation is also introduced as a novel application of plasma, and the effects of bacterial inactivation, decomposition of allelochemicals, and improvement in plant growth by plasma are demonstrated.

scholarly journals Oxidative Decoloration of Dyes by Pulsed Discharge Plasma over a Water Surface under Argon Atmospheric

2013 ◽  
Vol 38 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Wahyudiono ◽  
Siti Machmudah ◽  
Koichi Nagafuchi ◽  
Mitsuru Sasaki ◽  
Hidenori Akiyama ◽  
...  
Keyword(s):  
Water Surface ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Study on Electron Density Dependence of Metastable Ar+Density in Pulsed-Discharge Plasma by Using LIF Method

1987 ◽  
Vol 26 (Part 1, No. 1) ◽  
pp. 184-185
Author(s):  
Yukio Watanabe ◽  
Masaharu Shiratani ◽  
Sukeomi Ogi ◽  
Naoki Kunihiro
Keyword(s):  
Density Dependence ◽  
Electron Density ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Decomposition of Toluene Using Nanosecond- Pulsed-Discharge Plasma Assisted With Catalysts

2015 ◽  
Vol 43 (10) ◽  
pp. 3461-3469 ◽  
Author(s):  
Akihiko Ogasawara ◽  
Junkai Han ◽  
Kengo Fukunaga ◽  
Jinlong Wang ◽  
Douyan Wang ◽  
...  
Keyword(s):  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma
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