Assessment of a new carbon tetrachloride destruction system based on a microwave plasma torch operating at atmospheric pressure

Rubio, Soledad; Quintero, M.C.; Rodero, A.; Fernández-Rodríguez, José María

doi:10.1016/j.jhazmat.2007.02.056

Cited by 17 publications

(13 citation statements)

References 16 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: 83%

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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: 83%

“…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: 96%

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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“…Wu et al [15] have reported the use of microwave plasma technique for the reaction of SiCl 4 to Si by using H 2 as the plasma gas. Several other investigators have used microwave plasma for the decomposition of compounds like carbon tetrachloride [16], perfluorocompounds [17], nitric and nitrous oxides and ammonia [18]. Following the same principle, the precursor TiCl 4 can be reacted and it is possible to obtain TiO 2 in the oxygen environment.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity of Microwave Plasma-Synthesized TiO2 Nanopowder

Kumar¹,

Deshpande

Krishna³

et al. 2010

Plasma Chem Plasma Process

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Nanocrystalline TiO 2 was synthesized using the microwave plasma technique and characterized using X-ray diffraction, transmission electron microscopy, scanning electron microscopy, laser particle size analyzer, UV-vis spectroscopy and BET surface area analyzer. The synthesized TiO 2 powder crystallized in anatase phase and the crystallite sizes were in nanometers. The photocatalytic activity of the compound was determined and compared against the activity of the commercial Degussa P-25 TiO 2 catalyst. The degradation rates of the dyes were found to be higher over the synthesized TiO 2 as compared to that over commercial Degussa P-25 TiO 2 .

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“…This system had previously proved effective in destroying carbon tetrachloride by use of an argon plasma at atmospheric pressure [11,12], achieving rates higher than 99% destruction. Although not alone, in the literature are some efficiently works [13][14][15] in the destruction of VOCs by microwave plasma.…”

Section: Introductionmentioning

confidence: 99%

Application of a Microwave Helium Plasma Torch Operating at Atmospheric Pressure to Destroy Trichloroethylene

Rubio

Rodero

Quintero

2008

Plasma Chem Plasma Process

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We examined the influence of the gas flow-rate, microwave power and trichloroethylene concentration on the destruction of trichloroethylene with a system based on a microwave helium plasma operating at atmospheric pressure. Based on the experimental results obtained, the proposed system allows input concentrations of C 2 HCl 3 in the ppmv range to be reduced to output concentrations in the ppbv range (i.e. virtually quantitative destruction) by using a microwave plasma power below 1000 W. High helium flow-rates and C 2 HCl 3 concentrations allow energy efficiency values above 600 g/kW h to be obtained. Analyses of the output gases by gas chromatography and species present in the plasma by optical emission spectroscopy confirmed the negligible presence of halogen compounds resulting from the destruction of C 2 HCl 3 , and that of CCl 4 and C 2 Cl 4 as the sole chlorine species exceeding levels of 30 ppbv. Gaseous by-products consisted mainly of CO 2 , NO and N 2 O in addition to Cl 2 traces.

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Assessment of a new carbon tetrachloride destruction system based on a microwave plasma torch operating at atmospheric pressure

Cited by 17 publications

References 16 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

Photocatalytic Activity of Microwave Plasma-Synthesized TiO2 Nanopowder

Application of a Microwave Helium Plasma Torch Operating at Atmospheric Pressure to Destroy Trichloroethylene

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