Chlorinated hydrocarbons and PAH decomposition in dry and humid air by electron beam irradiation

Nichipor, H.; Dashouk, E.M.; Yacko, S.; Chmielewski, A.G.; Zimek, Z.; Sun, Yongxia

doi:10.1016/s0969-806x(02)00352-3

Cited by 12 publications

(9 citation statements)

References 6 publications

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“…Electron-beam technology is a promising method for treating VOCs at low concentrations. Many studies on the electron-beam treatment of VOCs have been performed at both the laboratory − and pilot − scales. However, few data are available for a feasibility study of this technology.…”

Section: Introductionmentioning

confidence: 99%

Application of Electron Beams for the Treatment of VOC Streams

Hirota

Sakai

Washio

et al. 2004

Ind. Eng. Chem. Res.

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Electron-beam technology is based on using radical reactions to destroy air pollutants. Twenty volatile organic compounds (VOCs) were irradiated with electron beams in a laboratory-scale apparatus to examine the influence of the chemical structures of the VOCs from an energetic point of view. The experiments showed that the electron-beam energy required for 90% treatment could be roughly estimated from their chemical structures. The unification of a self-shielding electron accelerator with a reactor could reduce capital costs for electron-beam systems. Electronbeam technology is a promising method for the treatment of VOCs.

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Section: Introductionmentioning

confidence: 99%

Application of Electron Beams for the Treatment of VOC Streams

Hirota

Sakai

Washio

et al. 2004

Ind. Eng. Chem. Res.

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“…The "kinetic" code applied to study CFC decomposition in air under EB irradiation in this work involves calculating the rate of W j of j-type species (molecules•cm -3 •s -1 ) generated from a matrix with k-type molecules according to Eq. ( 1) [21]:…”

Section: Methodsmentioning

confidence: 99%

Computer-simulated degradation of CF₃Cl, CF₂Cl₂, and CFCl₃ under electron beam irradiation

Kabasa,

Sun,

Chmielewski

et al. 2023

Nukleonika

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Electron beam treatment technologies should be versatile in the removal of chlorofluorocarbons (CFCs) owing to their exceptional cross sections for the thermal electrons generated in the radiolysis of air. Humidity, dose rates, O2 concentration, and CFC concentration influence the efficiency of the destruction process under electron beam treatment. Computer simulations have been used to theoretically demonstrate the destruction of chlorotrifluoromethane (CF3Cl), dichlorodifluoromethane (CF2Cl2), and trichlorofluoromethane (CFCl3) in the air (N2 + O2: 80% + 20%) in room temperature up to a dose of 13 kGy. Under these conditions, it is predicted that the removal efficiency is in the order CF3Cl (0.1%) < CF2Cl2 (7%) < CFCl3 (34%), which shows the dependence of the process on the number of substituted Cl atoms. Dissociative electron attachment with the release of Cl– is the primary process initiating the destruction of CFCs from the air stream. Reactions with the first excited state of oxygen, namely, O(1D), and charge-transfer reactions further promote the degradation process. The degradation products can be further degraded to CO2, Cl2, and F2 by prolonged radiation treatment. Other predicted products can also be removed through chemical processes.

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“…The promising effects provides the application of a radiation method (with a beam of electrons) [99][100][101][102][103][104][105] used till now to the simultaneous elimination of sulphur dioxide and nitrogen oxides in power plants. Furthermore, it is reported that the application of corona discharge permits one to reduce the emission of dioxins [106,107].…”

Section: Methods Of Dioxins Emission Reductionmentioning

confidence: 99%

The Possibilities of Reduction of Polychlorinated Dibenzo-P-Dioxins and Polychlorinated Dibenzofurans Emission

Wielgosiński

2010

International Journal of Chemical Engineering

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In the study the most important and known polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs) emission sources are presented and known methods of reduction of dioxin emission to the atmosphere are discussed in detail. It is indicated that the most relevant emission source is a combustion process. The mechanism of dioxin formation in thermal processes is presented in brief. The author characterized primary methods of reduction of PCDDs/PCDFs emission encompassing the interference into the combustion process to minimize their formation and discussed known secondary methods aimed at their removal from the stream of waste gases. It was attempted to make a critical assessment of PCDD/Fs reduction methods described in literature.

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Chlorinated hydrocarbons and PAH decomposition in dry and humid air by electron beam irradiation

Cited by 12 publications

References 6 publications

Application of Electron Beams for the Treatment of VOC Streams

Application of Electron Beams for the Treatment of VOC Streams

Computer-simulated degradation of CF₃Cl, CF₂Cl₂, and CFCl₃ under electron beam irradiation

The Possibilities of Reduction of Polychlorinated Dibenzo-P-Dioxins and Polychlorinated Dibenzofurans Emission

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Chlorinated hydrocarbons and PAH decomposition in dry and humid air by electron beam irradiation

Cited by 12 publications

References 6 publications

Application of Electron Beams for the Treatment of VOC Streams

Application of Electron Beams for the Treatment of VOC Streams

Computer-simulated degradation of CF3Cl, CF2Cl2, and CFCl3 under electron beam irradiation

The Possibilities of Reduction of Polychlorinated Dibenzo-P-Dioxins and Polychlorinated Dibenzofurans Emission

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Product

Resources

About

Computer-simulated degradation of CF₃Cl, CF₂Cl₂, and CFCl₃ under electron beam irradiation