Hydrogen Peroxide Production in an Atmospheric Pressure RF Glow Discharge: Comparison of Models and Experiments

Vasko, CA Christopher; Liu, D; Veldhuizen, van Em Eddie; Iza, Felipe; Bruggeman, Peter

doi:10.1007/s11090-014-9559-8

Cited by 61 publications

(73 citation statements)

References 31 publications

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“…In particular, if the OH density increase is large enough, mutual reactions between OH species to give hydrogen peroxide are enhanced. [18][19][20] Although detailed analyses of plasma-treated water are beyond the scope of the present study, a preliminary analysis suggests that the concentration ratio of performic acid in the total peroxide product is larger in the WS-DBD system than in the N-DBD system. This trend supports the above argument.…”

Section: Discussionmentioning

confidence: 86%

Measurements of water molecule density by tunable diode laser absorption spectroscopy in dielectric barrier discharges with gas–water interface

Tachibana

Nakamura

Kawasaki

et al. 2017

Jpn. J. Appl. Phys.

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We measured water molecule (H 2 O) density by tunable diode-laser absorption spectroscopy (TDLAS) for applications in dielectric barrier discharges (DBDs) with a gas-water interface. First, the effects of water temperature and presence of gas flow were tested using a Petri dish filled with water and a gas injection nozzle. Second, the TDLAS system was applied to the measurements of H 2 O density in two types of DBDs; one was a normal (non-inverted) type with a dielectric-covered electrode above a water-filled counter electrode and the other was an inverted type with a water-suspending mesh electrode above a dielectric-covered counter electrode. The H 2 O density in the normal DBD was close to the density estimated from the saturated vapor pressure, whereas the density in the inverted DBD was about half of that in the former type. The difference is attributed to the upward gas flow in the latter type, that pushes the water molecules up towards the gas-water interface.

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Section: Discussionmentioning

confidence: 86%

Measurements of water molecule density by tunable diode laser absorption spectroscopy in dielectric barrier discharges with gas–water interface

Tachibana

Nakamura

Kawasaki

et al. 2017

Jpn. J. Appl. Phys.

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“…4b. It was expected that the concentration of H2O2 would be enhanced by increasing the plasma power as a result of the chemical equilibrium between the formation and destruction of H2O2 [28][29][30]. From the experimental results, it was indeed seen that an increase in the input power from 60 to 80 and 100 W could enhance the concentration of H2O2 in solution, with the H2O2 concentrations after 60 min treatment in each case 13.71×10 -3 , 14.10×10 -3 , and 14.81×10 -3 ppm, respectively.…”

Section: Influence Of the Plasma Power And Gas Flow Rate On The Hydromentioning

confidence: 99%

Decolorization of Methylene Blue in an Ar Non-Thermal Plasma Reactor

Matra¹,

Tawkaew²

2020

JESTR

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The decolorization of methylene blue (MB) dye wastewater was performed via atmospheric Ar non-thermal plasma (Ar-NTP). Investigations were carried out into two main aspects of the model; hydrogen peroxide (H2O2) production and the decolorization of MB by Ar-NTP. It was found that H2O2 could be obtained better at a lower pH and with a higher Ar gas flow rate and plasma power. The decolorization rate constant of MB decreased with the increase in the solution pH, and it was found to follow a pseudo-first-order reaction. The optimum experimental conditions in this paper for the decolorization of a 5 ppm initial MB concentration were: 20.35 W plasma power, 4 LPM Ar gas flow rate, and pH 5, together with the addition of 920 ppm Fe2+. The decorization rate constant was 83.7×10-3 min-1, which was 9.73 times greater than that without the addition of Fe2+ under the same experimental conditions.

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“…i.e. an increase in humidity favours hydrogen peroxide over ozone (Vasko et al, 2014). H2O2 and superoxide are known to produce •OH in the presence of transition metals through the Fenton and Haber-Weiss reactions; hence it could provide excellent antimicrobial properties (Foster et al, 2012).…”

Section: Application Development and Limitationsmentioning

confidence: 99%

Microbubble-enhanced DBD plasma reactor: Design, characterisation and modelling

Wright

Taglioli

Montazersadgh

et al. 2019

Chemical Engineering Research and Design

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The emerging field of atmospheric pressure plasmas (APPs) for treatment of various solutions and suspensions has led to a variety of plasma reactors and power sources. This article reports on the design, characterisation and modelling of a novel plasma-microbubble reactor that forms a dielectric barrier discharge (DBD) at the gas-liquid interface to facilitate the transfer of short-lived highly reactive species from the gas plasma into the liquid phase. The use of microbubbles enabled efficient dispersion of long-lived reactive species in the liquid and UVC-induced oxidation reactions are triggered by the plasma radiation at the gas-liquid interface. A numerical model was developed to understand the dynamics of the reactor, and the model was validated using experimental measurements. Fluid velocities in the riser region of the reactor were found to be an order of magnitude higher for smaller bubbles (~500 µm diameter) than for larger bubbles (~2500 µm diameter); hence provided well-mixed conditions for treatment. In addition to other reactive oxygen species (ROS) and reactive nitrogen species (RNS), �� Interfacial area m-1 Dynamic liquid velocity Pa s Volume m 3 Molecular weight g mol-1 1.0 Introduction Ozone has been established as an excellent oxidising agent and used on industrial scale for water treatment worldwide (Loeb et al., 2012). Its high oxidation potential of 2.07 V is superior to that of chlorine (1.36 V), and

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Hydrogen Peroxide Production in an Atmospheric Pressure RF Glow Discharge: Comparison of Models and Experiments

Cited by 61 publications

References 31 publications

Measurements of water molecule density by tunable diode laser absorption spectroscopy in dielectric barrier discharges with gas–water interface

Measurements of water molecule density by tunable diode laser absorption spectroscopy in dielectric barrier discharges with gas–water interface

Decolorization of Methylene Blue in an Ar Non-Thermal Plasma Reactor

Microbubble-enhanced DBD plasma reactor: Design, characterisation and modelling

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