Study of Hydrogen Peroxide Generation by Water Surface Discharge

Yoshihara, Kazuki; Ruma,; Hosseini, Seyed Hamid; Sakugawa, Takashi; Akiyama, H.

doi:10.1109/tps.2014.2345074

Cited by 12 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the impedance of water continues to vary while propagating a surface discharge because the discharge contact area also varies with the propagating discharge. 11,12) The effect of experimental conditions on the discharge contact region with water has been verified under constant conditions of applied voltage and water depth: 1) the discharge branching pattern on water changes as a function of water conductivity; 13,14) 2) the shape of a ground electrode immersed in water affects the surface discharge region on the water. 15) On the other hand, the pulse current waveform is one of the indicators of plasma behavior.…”

Section: Introductionmentioning

confidence: 95%

Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water

Furusato

Oura

Matsuda

et al. 2020

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Pulsed surface discharge on water has been given attention as a water purification technology and material synthesis method. The contribution of this study is to clarify the plasma state of a positive pulsed surface discharge on water. Although the pulse width of the current dramatically decreased with an applied voltage ranging from 10 to 20 kV under a conductivity of water of 1 mS cm−1 and a water depth of 2 mm, the plasma state in the vicinity of the needle electrode was a local thermodynamic equilibrium (LTE) state. Validation of the LTE was performed by the McWhirter criterion. On the other hand, the propagating discharge along the water surface was supposed to be in non-LTE state. Consequently, the pulsed surface discharge on water was in mixed states of LTE and non-LTE.

show abstract

Section: Introductionmentioning

confidence: 95%

Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water

Furusato

Oura

Matsuda

et al. 2020

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Other methods are discharge plasmas in gas bubbles entered into the water through pipes [3,4] and in the spray [5]. The industrial applications of these discharge plasmas have also been investigated by many researchers [6–24].…”

Section: Introductionmentioning

confidence: 99%

Pulsed Discharge Plasmas in Contact with Water and their Applications

Akiyama¹,

Akiyama

2020

IEEJ Transactions Elec Engng

Self Cite

View full text Add to dashboard Cite

Large-volume pulsed discharge plasmas have been studied to gain insight on their phenomena and to realize their applications in various areas, such as sterilization, water treatment, and cancer treatment. Since 2000, when a review paper titled 'Streamer Discharges in Liquids and their Application' was published, a number of related papers have been reported in the literature; these reports are summarized in this review paper. Four types of pulsed power-generated large-volume discharges in contact with water are presented as representative examples. The discharges are reviewed from the perspectives of the physical and chemical phenomena, as follows: the initiation of filamentary and bush-like streamers in water; the propagation and extinction of streamer discharge plasmas; the production, behavior, and collapse of bubbles; the measurement of temperature, density, electric field, shock wave, and radicals; the wide discharge on the water surface. Finally, the applications of these large-volume discharge plasmas are described.

show abstract

“…Primary radicals or ions generated in the gas-liquid interface are injected into the water to react and form secondary molecular species, e.g., OH radicals, H 2 O 2 , and ozone, which are very efficient to degrade organic pollutants in water [36]- [39].…”

Section: Introductionmentioning

confidence: 99%

A Review of Pulsed Power Systems for Degrading Water Pollutants Ranging From Microorganisms to Organic Compounds

2019

View full text Add to dashboard Cite

Water quality improvement and collecting safe water are two of the paramount concerns in today's world. Numerous water treatment and pollutant removal processes are introduced that vary with the type of pollutants. Among the proposed pollutant degradation methods, pulsed power is one of the effective methods that can be applied not only to degrade a wide range of contaminants but also to address the environmental issues associated with water treatment chemicals. The effectiveness of the pulsed power technology in water treatment was studied for a wide range of pollutants including microorganisms, nutrient pollution, emerging pollutants, and organic pollutants. This paper presents a review of pulsed power systems developed for organic and inorganic pollutants degradation in different water treatment applications. Also, it presents the effectiveness of several factors like the electrical characteristics of the pulse voltages and treatment time on degradation rates of different pollutants.

show abstract

Study of Hydrogen Peroxide Generation by Water Surface Discharge

Cited by 12 publications

References 17 publications

Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water

Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water

Pulsed Discharge Plasmas in Contact with Water and their Applications

A Review of Pulsed Power Systems for Degrading Water Pollutants Ranging From Microorganisms to Organic Compounds

Contact Info

Product

Resources

About