The Experts below are selected from a list of 111234 Experts worldwide ranked by ideXlab platform
A P Napartovich - One of the best experts on this subject based on the ideXlab platform.
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non Thermal Plasma instabilities induced by deformation of the electron energy distribution function
Plasma Sources Science and Technology, 2014Co-Authors: N A Dyatko, I V Kochetov, A P NapartovichAbstract:Non-Thermal Plasma is a key component in gas lasers, microelectronics, medical applications, waste gas cleaners, ozone generators, Plasma igniters, flame holders, flow control in high-speed aerodynamics and others. A specific feature of non-Thermal Plasma is its high sensitivity to variations in governing parameters (gas composition, pressure, pulse duration, E/N parameter). This sensitivity is due to complex deformations of the electron energy distribution function (EEDF) shape induced by variations in electric field strength, electron and ion number densities and gas excitation degree. Particular attention in this article is paid to mechanisms of instabilities based on non-linearity of Plasma properties for specific conditions: gas composition, steady-state and decaying Plasma produced by the electron beam, or by an electric current pulse. The following effects are analyzed: the negative differential electron conductivity; the absolute negative electron mobility; the stepwise changes of Plasma properties induced by the EEDF bi-stability; thermo-current instability and the constriction of the glow discharge column in rare gases. Some of these effects were observed experimentally and some of them were theoretically predicted and still wait for experimental confirmation.
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non Thermal Plasma instabilities induced by deformation of the electron energy distribution function
Plasma Sources Science and Technology, 2014Co-Authors: N A Dyatko, I V Kochetov, A P NapartovichAbstract:Non-Thermal Plasma is a key component in gas lasers, microelectronics, medical applications, waste gas cleaners, ozone generators, Plasma igniters, flame holders, flow control in high-speed aerodynamics and others. A specific feature of non-Thermal Plasma is its high sensitivity to variations in governing parameters (gas composition, pressure, pulse duration, E/N parameter). This sensitivity is due to complex deformations of the electron energy distribution function (EEDF) shape induced by variations in electric field strength, electron and ion number densities and gas excitation degree. Particular attention in this article is paid to mechanisms of instabilities based on non-linearity of Plasma properties for specific conditions: gas composition, steady-state and decaying Plasma produced by the electron beam, or by an electric current pulse. The following effects are analyzed: the negative differential electron conductivity; the absolute negative electron mobility; the stepwise changes of Plasma properties induced by the EEDF bi-stability; thermo-current instability and the constriction of the glow discharge column in rare gases. Some of these effects were observed experimentally and some of them were theoretically predicted and still wait for experimental confirmation.
Lan Tang - One of the best experts on this subject based on the ideXlab platform.
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treatment of organic waste using Thermal Plasma pyrolysis technology
Energy Conversion and Management, 2007Co-Authors: H Huang, Lan TangAbstract:Abstract This paper outlines the principles of Thermal Plasma pyrolysis processes and discusses recent research activities about organic waste treatment using Thermal Plasma pyrolysis technology. Different kinds of organic wastes, varying from plastic and used tires to agricultural residue and medical waste, have been subjected to Thermal Plasma pyrolysis tests in laboratory and pilot scale projects. Plasma pyrolysis of organic waste usually gives two product streams: a combustible gas having a calorific value in the range of 4–9 MJ/Nm3 and a carbonaceous residue. Pyrolysis conditions as well as some technical measures such as the quenching process and steam reforming have significant influences on the properties of these pyrolysis products. Research results indicated that Thermal Plasma pyrolysis may be a useful way of waste management for energy and material recovery.
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characterization of gaseous and solid product from Thermal Plasma pyrolysis of waste rubber
Environmental Science & Technology, 2003Co-Authors: H Huang, Lan Tang, C.z. WuAbstract:Pyrolysis of waste rubber in Thermal Plasma is studied for the purpose of producing gaseous fuel and recovering carbon black filler. The Plasma reactor has a dc arc nitrogen Plasma generator with a maximum electric power input of 62.5 kVA and a reaction chamber of 50 mm inner diameter and 1000 mm height. The results of a series of experiments have shown that the main components of the gaseous product are H2, CO, C2H2, CH4, and C2H4; the heat value of the gas is about 5−9 MJ/Nm3. The solid product contains more than 80 wt % elemental carbon, has a surface area of about 65 m2/g, and is referred to as pyrolytic carbon black (CBp). X-ray photoelectron spectroscopy (XPS) analysis has revealed that the CBp has mainly graphitic carbon structure similar to those of commercial carbon black. The CBp may be used as semireinforcing carbon black in nontire rubber applications, or, after upgrading, as carbon black filler for tire. Thus Thermal Plasma pyrolysis is potentially a useful way of treating waste rubber for re...
Mariadaniela Ionita - One of the best experts on this subject based on the ideXlab platform.
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the effect of non Thermal Plasma treatment on wheat germination and early growth
Innovative Food Science and Emerging Technologies, 2015Co-Authors: D Dobrin, Monica Magureanu, N B Mandache, Mariadaniela IonitaAbstract:Abstract The influence of non-Thermal Plasma treatment on wheat seeds ( Triticum aestivum ) has been investigated using a surface discharge reactor at atmospheric pressure and room temperature. Growth parameters, like roots and sprouts length and dry weight were measured on the fourth day of germination and a Gaussian distribution was used for curve-fitting of the obtained results. It was found that Plasma had little effect on the germination rate, but influenced growth parameters. In the case of Plasma treated seeds, the distribution of roots was shifted towards higher lengths as compared with the untreated samples. The distribution of the sprouts length was about two times narrower for the treated samples as compared with the control seeds. The sprouts and roots of the Plasma treated seeds were heavier than those of the control samples. The root-to-shoot (R/S) ratio differed substantially, being 0.88 ± 0.016 for the untreated seeds and reaching 1.2 ± 0.005 for the treated samples. Industrial relevance The results obtained in this research demonstrate that non-Thermal Plasma treatment has a positive effect on wheat early growth. Due to its advantages (uniform treatment, no destruction of seeds, no requirement for chemicals), Plasma might become an effective alternative to traditional pre-sowing seed treatment used in agriculture.
N A Dyatko - One of the best experts on this subject based on the ideXlab platform.
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non Thermal Plasma instabilities induced by deformation of the electron energy distribution function
Plasma Sources Science and Technology, 2014Co-Authors: N A Dyatko, I V Kochetov, A P NapartovichAbstract:Non-Thermal Plasma is a key component in gas lasers, microelectronics, medical applications, waste gas cleaners, ozone generators, Plasma igniters, flame holders, flow control in high-speed aerodynamics and others. A specific feature of non-Thermal Plasma is its high sensitivity to variations in governing parameters (gas composition, pressure, pulse duration, E/N parameter). This sensitivity is due to complex deformations of the electron energy distribution function (EEDF) shape induced by variations in electric field strength, electron and ion number densities and gas excitation degree. Particular attention in this article is paid to mechanisms of instabilities based on non-linearity of Plasma properties for specific conditions: gas composition, steady-state and decaying Plasma produced by the electron beam, or by an electric current pulse. The following effects are analyzed: the negative differential electron conductivity; the absolute negative electron mobility; the stepwise changes of Plasma properties induced by the EEDF bi-stability; thermo-current instability and the constriction of the glow discharge column in rare gases. Some of these effects were observed experimentally and some of them were theoretically predicted and still wait for experimental confirmation.
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non Thermal Plasma instabilities induced by deformation of the electron energy distribution function
Plasma Sources Science and Technology, 2014Co-Authors: N A Dyatko, I V Kochetov, A P NapartovichAbstract:Non-Thermal Plasma is a key component in gas lasers, microelectronics, medical applications, waste gas cleaners, ozone generators, Plasma igniters, flame holders, flow control in high-speed aerodynamics and others. A specific feature of non-Thermal Plasma is its high sensitivity to variations in governing parameters (gas composition, pressure, pulse duration, E/N parameter). This sensitivity is due to complex deformations of the electron energy distribution function (EEDF) shape induced by variations in electric field strength, electron and ion number densities and gas excitation degree. Particular attention in this article is paid to mechanisms of instabilities based on non-linearity of Plasma properties for specific conditions: gas composition, steady-state and decaying Plasma produced by the electron beam, or by an electric current pulse. The following effects are analyzed: the negative differential electron conductivity; the absolute negative electron mobility; the stepwise changes of Plasma properties induced by the EEDF bi-stability; thermo-current instability and the constriction of the glow discharge column in rare gases. Some of these effects were observed experimentally and some of them were theoretically predicted and still wait for experimental confirmation.
Taobo Wang - One of the best experts on this subject based on the ideXlab platform.
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synergistic effects and mechanism of a non Thermal Plasma catalysis system in volatile organic compound removal a review
Catalysis Science & Technology, 2018Co-Authors: Xinxin Feng, Hongxia Liu, Zhenxing Shen, Taobo WangAbstract:Non-Thermal Plasma catalysis with high efficiency, high by-product selectivity and superior carbon balance is one of the most promising technologies in the control of volatile organic compounds (VOCs). Non-Thermal Plasma catalysis can be subdivided into three types: continuous operation in Plasma catalyst (CIPC) system, sequential operation in Plasma catalyst (SIPC) system and post Plasma catalyst (PPC) system. In this review, a comprehensive discussion on the synergistic mechanism of the CIPC, SIPC and PPC systems is provided. For CIPC, the introduction of catalysts changed the discharge behavior and generated new active species. Plasma discharge modified catalyst surfaces were summarized. The behavior and mechanism of catalyst adsorption and surface reactions within a Plasma reactor and Plasma oxidation in SIPC were discussed. For PPC, the performance of the Plasma modified gas composition and temporarily activated catalysts were analyzed. In addition, the by-product inhibition by catalysts was also discussed. Moreover, the synergistic effects of the Plasma and catalysts of the three systems on VOC destruction were critically reviewed. Based on these studies, the catalyst characteristics suitable for the CIPC, SIPC and PPC systems were summarized. Finally, the outlook on non-Thermal Plasma catalysis coupled systems in VOC control was proposed. It can be reasonably anticipated that this review is meaningful for deepening our understanding of the fundamental scientific principles regarding the catalytic oxidation of VOCs in non-Thermal Plasma catalysis systems, providing valuable and feasible references for researchers and designers on the efficient reduction and control of VOCs.
