Efficient generation of ozone in arrays of microchannel plasmas

Kim, M. H.; Cho, J. H.; Ban, S. B.; Choi, Rebecca; Kwon, Eddie; Park, S. J.; Eden, J. G.

doi:10.1088/0022-3727/46/30/305201

Cited by 35 publications

(19 citation statements)

References 12 publications

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“…These discharges where run at ac in the range of 15 to 20 kHz. Linear, atmospheric-pressure oxygen plasmas with trapezoidal or parabolic profile, generated within nanoporous alumina microchannels were studied more recently by this group [65,66]. An example of the design and an image (in the visible spectrum) of such a discharge in atmosphericpressure air is shown in Figure 19.…”

Section: Ac Operation Of Microcavity Dischargesmentioning

confidence: 99%

20 years of microplasma research: a status report

Schoenbach

Becker²

2016

Eur. Phys. J. D

176

112

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Abstract. The field of microplasmas gained recognition as a well-defined area of research and application within the larger field of plasma science and technology about 20 years ago. Since then, the activity in microplasma research and applications has continuously increased. A survey of peer reviewed papers on microplasmas published annually shows a steady increase from fewer than 20 papers in 1995 to about 75 in 2005 and more than 150 in 2014. This count excludes papers that deal exclusively with technological applications where the microplasma is used solely as a tool. This topical review aims to provide a snap shot of the current state of microplasma research and applications. Given the rapid proliferation of microplasma applications, the topical review will focus primarily on the status of microplasma science and our understanding of the physics principles that enable microplasma operation. Where appropriate, we will also address microplasma applications, however, we will limit the discussion of microplasma applications to examples where the application is closely tied to the plasma science. No attempt is made to provide a comprehensive and in-depth review of the diverse range of all microplasma applications, except for the inclusion of a few key references to recent reviews of microplasma applications.

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Section: Ac Operation Of Microcavity Dischargesmentioning

confidence: 99%

20 years of microplasma research: a status report

Schoenbach

Becker²

2016

Eur. Phys. J. D

176

112

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“…. ), ozone gener-ation [7][8][9][10][11][12] , air and water depollution (including volative organic compounds removal) 9,[13][14][15][16] or plasma-assisted combustion 17 . Meanwhile, plasmachemical synthesis has barely ventured beyond (nano-)material synthesis [18][19][20][21][22][23][24] , plasma-assisted polymerization [25][26][27] and a couple of gas-phase reactions (including benzene hydroxylation [28][29][30][31][32] and methane reforming [33][34][35][36][37] ).…”

Section: Introductionmentioning

confidence: 99%

“…Microplasmas for chemistry have been triggered in capillaries 40,48,58,59 , in arrays of channels microengineered in various materials 12,[60][61][62][63][64] , in specially resistant substrates 65 , in wide simple millifluidic channels 29,66,67 (even inside a bubble 68,69 ), in a channel as a surface discharge 70 or triggered by outer electrodes at its ends 71,72 , in a modified commercial microfluidic channel 11 and in a SU8 channels and ITO electrodes 73 (but without reaction). The reactions performed in microchannels have merely been ozone generation and the hydroxylation of benzene and toluene 12,29 , in gas phase only.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic chips for plasma flow chemistry: application to controlled oxidative processes

et al. 2018

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“…In recent years, microplasma technology has been shown to dramatically reduce the strength of the electrical fields required for ozone generation [15][16][17]. A single chip (microchannel array) can produce 130 grams/kilowatt-hour, about three times more efficient than conventional dielectric barrier discharge (DBD) or corona ozone reactors that have comparable O 3 outputs [17,18].…”

Section: Introductionmentioning

confidence: 99%

Solar Powered Microplasma-Generated Ozone: Assessment of a Novel Point-of-Use Drinking Water Treatment Method

Dorevitch

Anderson

Shrestha

et al. 2020

IJERPH

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Ozonation is widely used in high-income countries for water disinfection in centralized treatment facilities. New microplasma technology has reduced the energy requirements for ozone generation dramatically, such that a 15-watt solar panel is sufficient to produce small quantities of ozone. This technology has not been used previously for point-of-use drinking water treatment. We conducted a series of assessments of this technology, both in the laboratory and in homes of residents of a village in western Kenya, to estimate system efficacy and to determine if the solar-powered point-of-use water ozonation system appears safe and acceptable to end-users. In the laboratory, two hours of point-of-use ozonation reduced E. coli in 120 L of wastewater by a mean (standard deviation) of 2.3 (0.84) log-orders of magnitude and F+ coliphage by 1.54 (0.72). Based on laboratory efficacy, 10 families in Western Kenya used the system to treat 20 L of household stored water for two hours on a daily basis for eight weeks. Household stored water E. coli concentrations of >1000 most probable number (MPN)/100 mL were reduced by 1.56 (0.96) log removal value (LRV). No participants experienced symptoms of respiratory or mucous membrane irritation. Focus group research indicated that families who used the system for eight weeks had very favorable perceptions of the system, in part because it allowed them to charge mobile phones. Drinking water ozonation using microplasma technology may be a sustainable point-of-use treatment method, although system optimization and evaluations in other settings would be needed.

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Efficient generation of ozone in arrays of microchannel plasmas

Cited by 35 publications

References 12 publications

20 years of microplasma research: a status report

20 years of microplasma research: a status report

Microfluidic chips for plasma flow chemistry: application to controlled oxidative processes

Solar Powered Microplasma-Generated Ozone: Assessment of a Novel Point-of-Use Drinking Water Treatment Method

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