Sterilization and complete removal of bacteria using atmospheric pressure plasmas

Cooper, Matthew M.; Fridman, Gregory; Vaze, Nachiket; Staack, David; Anandan, Shivanthi; Cho, Y.I.; Gutsol, A.; Fridman, Alexander; Tsapin, A.

doi:10.1109/plasma.2008.4591007

Cited by 4 publications

(3 citation statements)

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“…Gliding arc discharge (GAD)-which typically comprises two divergent electrodes with a knife shape and is shown to be a powerful transitional plasma with a relatively high power, high electron temperature, good selectivity for chemical process, as well as high energy efficiency [1,[8][9][10][11][12]-has been extensively studied and successfully applied in a number of applications over the past decade, such as energy conversion [9,[13][14][15][16][17], CO 2 reduction [18,19], enhancement of combustion [12,20], material treatment [21], air sterilization [10,22], and environmental applications (e.g., destruction of volatile organic compounds (VOC) [23,24] and waste water disposal [25]).…”

Section: Introductionmentioning

confidence: 99%

Dynamic behavior of a rotating gliding arc plasma in nitrogen: effects of gas flow rate and operating current

Zhang

Zhu

et al. 2017

Plasma Sci. Technol.

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The effects of feed gas flow rate and operating current on the electrical characteristics and dynamic behavior of a rotating gliding arc (RGA) plasma codriven by a magnetic field and tangential flow were investigated. The operating current has been shown to significantly affect the time-resolved voltage waveforms of the discharge, particularly at flow rate=2 l min −1 . When the current was lower than 140 mA, sinusoidal waveforms with regular variation periods of 13.5-17.0 ms can be observed (flow rate=2 l min −1 ). The restrike mode characterized by serial sudden drops of voltage appeared under all studied conditions. Increasing the flow rate from 8 to 12 l min −1 (at the same current) led to a shift of arc rotation mode which would then result in a significant drop of discharge voltage (around 120-200 V). For a given flow rate, the reduction of current resulted in a nearly linear increase of voltage.

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Section: Introductionmentioning

confidence: 99%

Dynamic behavior of a rotating gliding arc plasma in nitrogen: effects of gas flow rate and operating current

Zhang

Zhu

et al. 2017

Plasma Sci. Technol.

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“…To obtain ω S , we first determine the value of ω L by deconvoluting the total line shape and then subtract the FWHM of van der Waals broadening from ω L according to (8). In this paper, the temperature of the carrier gas was also determined using the van der Waals broadening.…”

Section: ) Stark Broadeningmentioning

confidence: 99%

“…treatment of contaminated water and sterilization [8], [9], and the surface modification of multiwalled carbon nanotubes [10]. In contrast to conventional knife-shaped gliding arc discharge, rotating gliding arc (RGA) is propelled by tangential flow to form a plasma disc, which benefits the merits of maintaining a stable operating regime for an indefinite amount of time and the homogeneous distribution of the active species (energetic electrons, excited molecules, ions, atoms, and radicals) in the plasma [11], [12].…”

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confidence: 99%

Determination of Spectroscopic Temperatures and Electron Density in Rotating Gliding Arc Discharge

Zhang²,

Li³

et al. 2015

IEEE Trans. Plasma Sci.

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The spectroscopic characteristics of rotating gliding arc (RGA) discharge, codriven by a magnetic field and tangential gas flow, have been investigated by optical emission spectroscopy. In argon gas, the electron density of the atmospheric RGA plasma was measured, while the vibrotatinoal temperatures were measured in nitrogen discharge. By simulating the spectral line profile determined by the joint effects of Lorentzian (Stark, van der Waals, and natural) and Gaussian (Doppler and instrumental) broadening, the electron density fluctuated in the range of 1.32×10 15 -4.56×10 15 cm −3 and 4.06×10 15 -5.74×10 15 cm −3 within the variation of argon flow rate and applied voltage, respectively. The rotational temperature in N 2 discharge was obtained by comparing the modeled optical emission spectrum with the experimental measurements. The vibrational temperature was derived from a Boltzmann plot by analyzing the spectral bands of the second positive system of N 2 (C 3 u → B 3 g ). The vibrational and rotational temperatures varied in the range of 0.1-0.13 eV and 0.42-0.44 eV, respectively, under the same operating condition, indicating that the RGA discharge is a nonequilibrium plasma. By analyzing the fundamental spectroscopic parameters of the discharge, a comprehensive understanding of RGA plasma was achieved, facilitating its application in practical industry processes.Index Terms-Electron density, plasma, rotating gliding arc (RGA), rotational temperature, vibrational temperature.

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Hydrogen Production From Partial Oxidation of Methane Using an AC Rotating Gliding Arc Reactor

Zhang

Yan

et al. 2013

IEEE Trans. Plasma Sci.

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Sterilization and complete removal of bacteria using atmospheric pressure plasmas

Cited by 4 publications

References 0 publications

Dynamic behavior of a rotating gliding arc plasma in nitrogen: effects of gas flow rate and operating current

Dynamic behavior of a rotating gliding arc plasma in nitrogen: effects of gas flow rate and operating current

Determination of Spectroscopic Temperatures and Electron Density in Rotating Gliding Arc Discharge

Hydrogen Production From Partial Oxidation of Methane Using an AC Rotating Gliding Arc Reactor

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