estudio y caracterización de un plasma de microondas a presión ...

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Concentration CO 2 (ppm) 10000 1000 100 10 Argon Total flow rate: 1.0 L/min MW Power: 600 W CO 2 10 100 1000 10000 Concentration CCl 4 (ppm) Capítulo 3 Figure 3.7: CO 2 concentration at the reactor outlet versus CCl 4 concentration introduced (the CO 2 concentration from the air has been substracted). GC/MS analyses revealed the presence of byproducts including CO2 [22], NO [23] and N2O [24]. In support of the carbon balance, shown in the lineal behaviour of the figure 3.7, we do not detect any other carbon containing compounds, than CO2 and CCl4, reason why the formation of CO2 should be the main pathway for the loss of atomic carbon from fragmented CCl4, its concentration increasing with increase in that of CCl4 introduced into the plasma (figure 3.7). However, the variation of the CO2 concentration at the reactor outlet as a function of the microwave power and of the gas flow is not representative, due to the variation of the CCl4 destroyed with these parameters is in the range of ppbv (virtually completely eliminated) versus the total concentration of CO2, in the range of ppmv. The oxygen required for CO2 to form was obtained from atmospheric air present as an impurity in the reactor, due to turbulences produced in the outlet hole. The presence of air in the detector facilitated the formation of N2O and NO as a result of the high temperature of the gas in the recombination chamber (around 400 ºC). Unlike CO2, the concentrations of N2O and NO at the reactor outlet were not influenced by that of CCl4 introduced into the plasma. On the other hand, an increase in flow-rate or microwave power supplied to the torch increased the concentrations of these species 85
Destrucción de VOCs con plasma de Argón through an increased temperature of the gas and the turbulence introduced by atmospheric air in the reactor. Under the optimum conditions, the N2O and NO concentrations at the reactor outlet were close to 500 and 250 ppm, respectively. Therefore, reducing the production of these compounds requires using lower microwave power and flow-rate levels. Figure 3.8: XRDP patterns for the solid phases deposited on glass, aluminium and copper sample holders under variable conditions in the presence and absence of a protective plastic film on the holders. 86 3.3.2.2. Solid byproducts The reactor exhibited solid deposits in various zones after the destruction process. Such deposits were examined by X-ray diffraction spectroscopy and found to consist of
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UNIVERSIDAD DE CÓRDOBA FACULTAD DE
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ESTUDIO Y CARACTERIZACIÓN DE UN PL
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Este trabajo ha sido realizado en e
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Dedicado a Rocío, Darío y Noah Un
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Índice DESTRUCCIÓN DE VOCS CON PL
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Índice iv 4.4. Ejemplo: Antorcha d
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ÍNDICE DE FIGURAS Figura I.1: Esqu
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Índice Figure 3.11: Variation of t
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Índice Figure 6.5: Radial and axia
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ESTRUCTURA Y OBJETIVOS El presente
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I.1. Compuestos orgánicos volátil
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Introducción droguerías. En el si
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Introducción agua subterránea. Es
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I.2.1. Técnicas de recuperación d
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Introducción concentraciones relat
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Introducción cuando el gas sale de
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Introducción los gases a algún va
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Introducción incineradores catalí
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Introducción En la figura I.3 se m
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Introducción plasma, y por tanto r
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I.3.1. Descargas corona pulsadas In
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Introducción En este caso, la mues
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Introducción por tanto, las dimens
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Introducción refiere. De hecho la
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Introducción [26] Hsiao MC, Merrit
Page 62 and 63: CAPÍTULO 1 REMOVAL OF VOLATILE ORG
Page 64 and 65: 1.2. Experimental set-up Capítulo
Page 66 and 67: Capítulo 1 The destruction percent
Page 68 and 69: Capítulo 1 Our data also support t
Page 70 and 71: % DRE % DRE 100,0000 100,0000 99,99
Page 72 and 73: Capítulo 1 Energy efficiencies of
Page 74 and 75: CAPÍTULO 2 APPLICATION OF A MICROW
Page 76 and 77: Capítulo 2 at atmospheric pressure
Page 78 and 79: 2.2.1. Microwave generator and coup
Page 80 and 81: 2.3. Results 2.3.1. Destruction of
Page 82 and 83: Capítulo 2 mm. The curves are simi
Page 84 and 85: Capítulo 2 In obtaining high energ
Page 86 and 87: Capítulo 2 Figure 2.6b shows the v
Page 88 and 89: Capítulo 2 revealed the presence o
Page 90 and 91: Capítulo 2 destruction step but un
Page 92 and 93: Capítulo 2 concentrations in the p
Page 94: [23] B.M. Penetrante, et al.: Plasm
Page 98 and 99: CAPÍTULO 3 ASSESSMENT OF A NEW CAR
Page 100 and 101: Capítulo 3 enhanced destruction an
Page 102 and 103: 3.2.1. Microwave generator and its
Page 104 and 105: 3.2.2. Sample insertion Capítulo 3
Page 106 and 107: Capítulo 3 concentration was a res
Page 108 and 109: Capítulo 3 Figure 3.4: Variation o
Page 110 and 111: Capítulo 3 different microwave pow
Page 114 and 115: Capítulo 3 CuCl2·2H2O on glass su
Page 116 and 117: Capítulo 3 Figure 3.10 shows some
Page 118 and 119: 3.4. Conclusions Capítulo 3 The pr
Page 120: Capítulo 3 [14] A. Rodero, M.C. Qu
Page 123 and 124: Destrucción de VOCs con plasma de
Page 148 and 149: CAPÍTULO 5 APPLICATION OF MICROWAV
Page 150 and 151: Capítulo 5 99% were achieved. Usin
Page 152 and 153: COMPONENT DESCRIPTION Microwave gen
Page 154 and 155: Concentration (ppb) 300 250 200 150
Page 156 and 157: TCC Concentration (ppb) 1100 1000 9
Page 158 and 159: Capítulo 5 5.4 and 5.5 are virtual
Page 160 and 161: Capítulo 5 indicated that the syst
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Capítulo 5 was nearly 100%. The de
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Capítulo 5 GC/MS analyses revealed
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Figure 5.12: CN rotational bands ob
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5.5. References [1] R.E. Doherty: J
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DISTRIBUCIÓN DE TEMPERATURAS Y ESP
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Distribución de temperaturas y esp
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CAPÍTULO 7 AXIAL DISTRIBUTION OF T
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Capítulo 7 of C2HCl3 achieve destr
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7.3. Results Capítulo 7 To study t
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7.4. References [1] N.J. Park Ridge
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Axial position (mm) Axial Position
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CONCLUSIONES GENERALES • Ha sido
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Conclusiones Generales punta del ac
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ANEXO Producción científica fruto
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Producción científica fruto de es
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