Application of microwave air plasma in the destruction of trichloroethylene and carbon tetrachloride at atmospheric pressure

Rubio, Soledad; Quintero, M.C.; Rodero, A.

doi:10.1016/j.jhazmat.2010.11.069

Cited by 15 publications

(5 citation statements)

References 31 publications

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“…The increase in power input also leads to an increase in the rate and extent of molecular fragmentation of reactant molecules due to collisions with metastable argon atoms as well as in the collisions with other species formed during the reaction as described later in this paper. A similar trend was reported by Rubio et al [16,17] in their study utilising a microwave plasma for CCl 4 destruction, and by Wang et al [22] on the thermal decomposition of CCl 4 . In our previous work we observed similar behaviour in the conversion profile of chlorinated hydrocarbons [24,25,21].…”

Section: Conversion Of Carbon Tetrachloride Methane and Temperature supporting

confidence: 84%

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Reaction of carbon tetrachloride with methane in a non-equilibrium plasma at atmospheric pressure, and characterisation of the polymer thus formed

Gaikwad

Kennedy

Mackie

et al. 2014

Journal of Hazardous Materials

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Please cite this article as: V. Gaikwad, E. Kennedy, J. Mackie, C. Holdsworth, S. Molloy, S. Kundu, M. Stockenhuber, B. Dlugogorski, Reaction of carbon tetrachloride with methane in a non-equilibrium plasma at atmospheric pressure, and characterisation of the polymer thus formed, Journal of Hazardous Materials (2014), http://dx.doi.org/10. 1016/j.jhazmat.2014.07.049 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. In this paper we focus on the development of a methodology for treatment of carbon tetrachloride utilising a non-equilibrium plasma operating at atmospheric pressure, which is not singularly aimed at destroying carbon tetrachloride but rather at converting it to a nonhazardous, potentially valuable commodity. This method encompasses the reaction of carbon tetrachloride and methane, with argon as a carrier gas, in a quartz dielectric barrier discharge reactor. The reaction is performed under non-oxidative conditions. Possible pathways for formation of major products based on experimental results and supported by quantum chemical calculations are outlined in the paper. We elucidate important parameters such as carbon tetrachloride conversion, product distribution, mass balance and characterise the chlorinated polymer formed in the process.

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Section: Conversion Of Carbon Tetrachloride Methane and Temperature supporting

confidence: 84%

“…Some notable studies in the field are those reported by Indarto et al [13,14], Penetrante et al [15], Rubio et al [16,17] and Foeglein et al [18].…”

Section: Introductionmentioning

confidence: 97%

Reaction of carbon tetrachloride with methane in a non-equilibrium plasma at atmospheric pressure, and characterisation of the polymer thus formed

Gaikwad

Kennedy

Mackie

et al. 2014

Journal of Hazardous Materials

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“…But we did not detect any of these products under the present experimental condition. The presence of atomic chlorine and ClO radicals during the decomposition process of TCE was confirmed by spectroscopic measurements [17][18]. As for the decomposition mechanism of TCE by plasma, oxygen chain reaction was proposed by Liu et al [19] and Han et al [20], when O2 existed in the background gas.…”

Section: Removal Of Tce By Corona Plasma With Water Vapor Injectionmentioning

confidence: 83%

Removal of Trichloroethylene by Corona Radical Injection

Li¹,

Zhao²

2019

MSF

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The removal of trichloroethylene (TCE) by corona discharge plasma was investigated. The influences of initial concentration, gas flow rate, injection of water vapor and ozone (O3) on removal efficiency were discussed. The results show that removal efficiency reduces with the initial concentration and gas flow rate increasing. A proper quantity of water vapor injection can improve the removal efficiency, but which is not always increased, due to the electronegative characteristic of water molecule. The maximum removal efficiency of 90.7% can be obtained in wet air flow with relative humidity of 70.6%. The removal efficiency increases obviously with O3 injection. The decomposition products are 2,2-Dichloroacetyl chloride (CHCl2COCl), carbonyl chloride (COCl2), hydrogen chloride (HCl) and carbon dioxide (CO2), based on which the decomposition mechanism is discussed. The oxygen chain reaction is the primary decomposition mechanism, and high energy electrons and active oxygen species play a leading role in the decomposition process. Therefore, removal efficiency of TCE can be improved greatly when water vapor and O3 is injected.

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“…The application of plasma technology for synthesis of diamond 8) , nanoparticles 9) , carbon nanotubes 10) , surface modifications 11) , decomposition of gaseous pollutants 12) , medical treatment 13) and such has been widely investigated. Recently, there has been a significant increase in the development of this plasma technology for the production of hydrogen gas from direct electric (DC) water plasma 14) , microwave plasma 15) , gliding arc discharge 16) , dielectric barrier discharge 17) , thermal and non-thermal plasma and corona discharge 18) ～ 20) due to the high temperature and high electron density it provides at atmospheric pressure.…”

Section: )mentioning

confidence: 99%

Hydrogen Production from Glucose and Cellulose Using Radio Frequency In-Liquid Plasma and Ultrasonic Irradiation

Syahrial

Mukasa

Toyota

et al. 2014

J. Jpn. Inst. Energy

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The purpose of this study is to efficiently produce hydrogen gas from saccharide using 27.12 MHz radiofrequency (RF) in-liquid plasma with and without ultrasonic irradiation. The experiments were conducted adopting two different ultrasonic frequencies, one from a 29 kHz horn-type ultrasonic transducer and the other from a 1.6 MHz piezoelectric transducer. The glucose solution and cellulose suspension concentrations were varied from 0.5 wt% to 50 wt% and 0.5 wt% to 20 wt% respectively. Hydrogen gas was then produced by the decomposition of the glucose solution and cellulose suspension by RF in-liquid plasma with and without ultrasonic irradiation. The hydrogen production rate from glucose solution with ultrasonic irradiation applied was greater than that without ultrasonic irradiation. However, no hydrogen production rate enhancement was observed from decomposition of cellulose suspension with ultrasonic irradiation applied. Ultrasonic atomization and agitation enhanced the chemical reaction of nonvolatile glucose in in-liquid plasma. The increase of the gas production rate was caused by the direct decomposition of the glucose by the plasma due to the atomized glucose molecules being fed into the plasma in a bubble. In addition, by using a high-speed camera, it was clarified that acoustic streaming occurred when a 1.6 MHz piezoelectric transducer was used in the experiment.

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Application of microwave air plasma in the destruction of trichloroethylene and carbon tetrachloride at atmospheric pressure

Cited by 15 publications

References 31 publications

Reaction of carbon tetrachloride with methane in a non-equilibrium plasma at atmospheric pressure, and characterisation of the polymer thus formed

Reaction of carbon tetrachloride with methane in a non-equilibrium plasma at atmospheric pressure, and characterisation of the polymer thus formed

Removal of Trichloroethylene by Corona Radical Injection

Hydrogen Production from Glucose and Cellulose Using Radio Frequency In-Liquid Plasma and Ultrasonic Irradiation

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