Temat: electron - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Theoretical study of dose and dose rate effect on trichloroethylene (HClC=CCl2) decomposition in dry and humid air under electron beam irradiation
Autorzy:: Nichipor, H.
Yacko, S.
Sun, Y.
Chmielewski, A. G.
Zimek, Z.
Powiązania:: https://bibliotekanauki.pl/articles/146819.pdf
Data publikacji:: 2008
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: trichloroethylene
electron beam decomposition
computer simulation
Opis:: Experimental data related to C2HCl3 (TCE) removal in dry and humid (200-1000 ppm of H2O) air, respectively, in ambient conditions under electron beam irradiation in the dose range of 1-40 kGy has been published in the literature. Based on the experimental results a theoretical model of C2HCl3 decomposition was proposed for the kinetic mechanism of such process. The active radicals of Cl, O and OH play an important role in the decomposition of TCE. According to the calculations performed, the Cl- dissociative electron attachment predominates in the initial stage of C2HCl3 decomposition. Cl radical accelerates this degradation by chain process in both humid and dry air, respectively. The OH radical produced in humid air also enhances the decomposition process of TCE.
Źródło:: Nukleonika; 2008, 53, 1; 11-16
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Decomposition of toluene in air mixtures under electron beam irradiation
Autorzy:: Sun, Y.
Chmielewski, A. G.
Bułka, S.
Zimek, Z.
Powiązania:: https://bibliotekanauki.pl/articles/148028.pdf
Data publikacji:: 2009
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: toluene
4-chlorotoluene
decomposition
electron beam
Opis:: The model gases of toluene-air mixtures were prepared by blowing technical air into liquid toluene and then irradiated with an ILU-6 accelerator located at the Institute of Nuclear Chemistry and Technology (INCT), Poland. It was found that the decomposition efficiency of toluene increases with absorbed dose and decreases with initial concentration of toluene. At 14.5 kGy dose, the decomposition efficiencies of toluene were 50, 37 and 34.5% for the initial concentrations of toluene 32.0, 63.4 and 78.0 ppm, respectively. At 58.0 kGy dose, the decomposition efficiencies of toluene were 93.8 and 78.1%, the initial concentrations of toluene being 32.0 and 63.4 ppm, respectively. Benzaldehyde was identified as one of the by-products of toluene decomposition in an air mixture. The decomposition efficiency and by-product formation under EB irradiation were compared between toluene and 4-chlorotoluene.
Źródło:: Nukleonika; 2009, 54, 2; 65-70
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Kinetic modelling of NO heterogeneous radiation-catalytic oxidation on the TiO2 surface in humid air under the electron beam irradiation
Autorzy:: Nichipor, H.
Sun, Y.
Chmielewski, A. G.
Powiązania:: https://bibliotekanauki.pl/articles/148642.pdf
Data publikacji:: 2017
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: electron beam
catalyst
reaction kinetics
NOx removal
irradiation
modelling
Opis:: Theoretical study of NOx removal from humid air by a hybrid system (catalyst combined with electron beam) was carried out. The purpose of this work is to study the possibility to decrease energy consumption for NOx removal. The kinetics of radiation catalytic oxidation of NO on the catalyst TiO2 surface under electron beam irradiation was elaborated. Program Scilab 5.3.0 was used for numerical simulations. Influential parameters such as inlet NO concentration, dose, gas flow rate, water concentration and catalyst contents that can affect NOx removal efficiency were studied. The results of calculation show that the removal effiiency of NOx might be increased by 8–16% with the presence of a catalyst in the gas irradiated field.
Źródło:: Nukleonika; 2017, 62, 3; 235-240
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Electron beam flue gas treatment process for purification of exhaust gases with high SO2 concentrations
Autorzy:: Chmielewski, A. G.
Licki, J.
Powiązania:: https://bibliotekanauki.pl/articles/146442.pdf
Data publikacji:: 2008
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: high sulphur fossil fuel
flue gas
electron accelerator
SO2 and NOx removal efficiency
absorbed dose
by-product
Opis:: Exhaust gases with high SO2 concentrations are emitted from combustion of high sulphur fossil fuels and from different industrial processes (e.g. copper smelter and sintering plants). The application of the electron beam process for SO2 and NOx removal from such flue gases was investigated. A parametric study was carried out to determine the SO2 and NOx removal efficiency as a function of temperature and humidity of irradiated gases, absorbed dose and ammonia stoichiometry. The efficiency 90–95% of SO2 removal was obtained in the optimal treatment conditions with an inlet SO2 concentration of up to 15% vol. The synergistic effect of high SO2 content on NOx removal was indicated. The collected by-product was a mixture of ammonium sulphate and nitrate. The content of heavy metals in the by- -products was many times lower than the values accepted for commercial fertilizers.
Źródło:: Nukleonika; 2008, 53, suppl. 2; 61-66
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki