The comparison of ozone production with dielectric barrier discharge plasma reactors series and parallel at atmospheric pressure

Kinandana, A. W.; Yulianto, Edy; Prakoso, Anom Dwi; Faruq, Azizatuz Zahro Al; Qusnudin, A.; Hendra, Muhammad; Sasmita, E.; Restiwijaya, M.; Pratiwi, S. H.; Arianto, Fajar; Nur, Muhammad

doi:10.1088/1742-6596/1217/1/012010

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…In a study by Kinandana et al, it was also found that O 3 formation has also been getting significantly affected by the system geometry. In their studies, the researchers have compared the series and parallel DBD configurations and reported that the series configuration was better as it provided 2000 μM more O 3 concentration than the parallel configuration [40]. Due to the operation of the reactor in an open atmosphere, a few O 2 molecules may entrain into the Whereas, higher dissolved O 3 concentration has been reported in those plasma systems which changes the sample pH to acidic [41].…”

Section: Rons Quantificationmentioning

confidence: 99%

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Joshi¹,

Prakash²,

Ahammad³

et al. 2022

Plasma Sci. Technol.

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Non-thermal plasma has emerged as an effective treatment system against the latest class of highly recalcitrant and toxic environmental pollutants termed emerging contaminants (ECs). In the present work, a detailed experimental study is carried out to evaluate the efficacy of a non-thermal plasma jet with two dyes, Rd. B and Met. Blue, as model contaminants. The plasma jet provided a complete dye decoloration in 30 min with an applied voltage of 6.5 kVp−p •OH, having the highest oxidation potential, acts as the main reactive species, which with direct action on contaminants also acts indirectly by getting converted into H2O2 and O3. Further, the effect of critical operational parameters viz., sample pH, applied voltage (4.5−6.5 kVp−p), conductivity (5−20 mS cm−1), and sample distance on plasma treatment efficacy was also examined. Out of all the assessed parameters, the applied voltage and sample conductivity was found to be the most significant operating parameters. A high voltage and low conductivity favored the dye decoloration, while the pH effect was not that significant. To understand the influence of plasma discharge gas on treatment efficacy, all the experiments are conducted with argon and helium gases under the fixed geometrical configuration. Both the gases provided a similar dye decoloration efficiency. The DBD plasma system with complete dye removal also rendered maximum mineralization of 73% for Rd. B, and 60% for Met. Blue. Finally, the system's efficiency against the actual ECs (four pharmaceutical compounds, viz., metformin, atenolol, acetaminophen, and ranitidine) and microbial contaminant (E. coli) was also tested. The system showed effectivity in the complete removal of targeted pharmaceuticals and a log2.5 E. coli reduction. The present systematic characterization of dye degradation could be of interest to large communities working towards commercializing plasma treatment systems.

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Section: Rons Quantificationmentioning

confidence: 99%

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Joshi¹,

Prakash²,

Ahammad³

et al. 2022

Plasma Sci. Technol.

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“…Hence, the formation of NO x in the studied plasma system can be ruled out. The formation of ozone (O 3 ), generated from the combination of three atoms of oxygen, was found in trace amounts since most of the generated ROS immediately reacted with VOCs and lower-molecular-weight (MW) HCs derived from the VOCs. , There was a higher probability of a direct collision between the highly energetic electrons and VOCs, by cracking at various molecular positions of VOCs, leading to their dehydrogenation reactions to yield lower-MW HCs, as shown in eqs – …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Removal of Mixed Volatile Organic Compounds of Benzene, Toluene, and Xylene in a Multistage Corona Discharge System under Excess Air

Ditthawat,

Pornmai,

Seneesrisakul

et al. 2023

Ind. Eng. Chem. Res.

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In this study, the oxidative decomposition of a mixture of three volatile organic compounds (VOCs)benzene, toluene, and xylenein a nonthermal plasma corona discharge (CD) under an excess air condition was examined to determine the influence of voltage, frequency, feed flow rate, and stage number. An initial total VOC concentration of 100 ppm (v/v) with a unity weight ratio of these three VOCs in air was fixed for the first experiment using a single-stage pin-and-plate (PP)CD system, revealing that the optimum conditions were a voltage of 8 kV, a frequency of 500 Hz, and a feed flow rate of 50 cm3/min, corresponding to a very short residence time of 0.46 s. Under these conditions, the use of two stages could maximize the removal of both the total and individual VOCs with the highest reduction in power consumption of 45%, indicating the advantage of a multistage PPCD plasma system. The oxidative decomposition pathway mechanisms of the mixed VOCs were initiated by the direct electron collision of VOC molecules to split the methyl group of xylene to yield toluene and then the methyl group of toluene to yield benzene. Next, the benzene ring was opened by electron collision to yield various low-molecular-weight (MW) hydrocarbons (HCs) The formation of radical oxygen species (ROS) also occurred in the plasma zone, resulting from the collision between generated electrons and oxygen molecules. The low-MW HCs were subsequently oxidized by ROS to yield mostly carbon dioxide and carbon monoxide with small portions of lower-MW HCs.

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“…The role of electrons generated in electrical discharge is to excite and dissociate oxygen molecules [16][17][18][19][20][21][22][23][24].…”

Section: Ozone Production Mechanism In Double Dbd Reactormentioning

confidence: 99%

Ozone Production in Cylindrical Co-axial Double Dielectric Barrier Discharge Ozone Generator

Panta

Baniya

Dhungana

et al. 2021

Walailak J Sci & Tech

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This study developed an ozone generator of a double co-axial cylindrical dielectric barrier discharge system with air, argon, and oxygen as the working gases. The discharge was produced by using a high voltage power supply of 0 - 18 kV and a line frequency of 50 Hz. The flow rate of air, argon, and oxygen was varied from 1 to 6 L/min. A comparison of O3 generation in air, argon, and oxygen using brass as a central electrode was conducted and it was found that O3 concentration was higher in the case of oxygen than in the air and in argon gases environment for given fixed discharge time, applied voltage, and diameter of the brass electrode. This study revealed that the concentration of ozone increased along with the increase in the applied voltage for constant discharge time and gas flow rate. The O3 concentration also increased with the increase in the discharge time at fixed applied voltage and gas flow rate; however, the concentration decreased with the increase in the gas flow rate at fixed discharge time, applied voltage, and diameter of the electrode. A small reactor with a large inner electrode generated a high concentration of O3. Yet, a reactor with a small diameter, there seemed to have an optimum inner electrode diameter. The glass tube reactor of the internal diameter of 18 mm and the brass electrode of diameter 8 mm were utilized in this study. The ozone concentration was higher for oxygen as feed gas than both in the air and in argon and the O3 concentration was also higher in the air than in argon at fixed discharge time, applied voltage, and diameter of ozone generator. HIGHLIGHTS Ozone concentration increases with increasing applied voltage and discharge time but concentration decreases with increasing gas flow rates Low cost ozone can be produced in DBD reactor at atmospheric pressure Oxygen can be used as feed gas to generate high concentration of ozone than other gases inside DBD generator Optimization of central electrode diameter and gap space inside DBD reactor can help to increase ozone concentration, yield, and efficiency Proper choice of central high voltage electrode also can play the important role for the generation of ozone in DBD chamber GRAPHICAL ABSTRACT

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The comparison of ozone production with dielectric barrier discharge plasma reactors series and parallel at atmospheric pressure

Cited by 9 publications

References 6 publications

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Development of low power non-thermal plasma jet and optimization of operational parameters for treating dyes and emerging contaminants

Removal of Mixed Volatile Organic Compounds of Benzene, Toluene, and Xylene in a Multistage Corona Discharge System under Excess Air

Ozone Production in Cylindrical Co-axial Double Dielectric Barrier Discharge Ozone Generator

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