Modeling and experimental evaluation of a non-isothermal photocatalytic solar reactor: temperature effect on the reaction rate kinetics
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| Format: | Artículo científico |
| Language: | en |
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Universidad del Valle
2017
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| _version_ | 1876449276197863424 |
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| author | Miguel A. Mueses |
| author_facet | Miguel A. Mueses |
| contents | Modeling and experimental evaluation of a non-isothermal photocatalytic solar reactor: temperature effect on the reaction rate kinetics Miguel A. Mueses Molano M. Marena Machuca M. Fiderman Ingeniería six TiO2 LVRPA flux model thermal exchange Mathematical modeling and experimental evaluation of temperature effects on photocatalytic degradation process and kinetic of a standard pollutants using solar radiation and suspended titanium dioxide were performed in a CPC reactor at pilot scale, coupled to a heat exchanger to control of temperature. Methylene Blue was selected as the substance for kinetic analysis. The model of the system includes mass balance of the batch reactor with recycle, based on global isotropic parameters. The incident radiation was modeled using empirical models adjusted using experimental data from environmental reports and optimization algorithms in function of atmospheric variations. The effect of scattering-absorption of radiation inside the reactor was estimated by solving the radiative transfer equation by estimating the local volumetric rate of photon absorption (LVRPA) using the six-flux absorption scattering model (SFM). The effect of the temperature was modeled using a thermal balance coupled to heat transfer equations. The kinetic implemented model was a generalized model with a modification of the temperature on the reaction rate equation by including the Arrhenius equation.It was found that the temperature affected the reaction rates by varying the oxygen concentration during the reaction. Process performance was improved under normal operating conditions without temperature control. The mathematical model and the established solution algorithm were highly predictive, generating correlation coefficients of 0.99 and errors below 2.5%. 2017 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291354828014 https://www.redalyc.org/journal/2913/291354828014/ https://www.redalyc.org/journal/2913/291354828014/html/ https://www.redalyc.org/journal/2913/291354828014/291354828014.epub https://www.redalyc.org/journal/2913/291354828014/movil 10.25100/iyc.v19i2.5301 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.2 Vol.19 |
| format | Artículo científico |
| id | redalyc_291354828014 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidad del Valle |
| spellingShingle | Modeling and experimental evaluation of a non-isothermal photocatalytic solar reactor: temperature effect on the reaction rate kinetics Miguel A. Mueses Ingeniería six TiO2 LVRPA flux model thermal exchange Modeling and experimental evaluation of a non-isothermal photocatalytic solar reactor: temperature effect on the reaction rate kinetics Miguel A. Mueses Molano M. Marena Machuca M. Fiderman Ingeniería six TiO2 LVRPA flux model thermal exchange Mathematical modeling and experimental evaluation of temperature effects on photocatalytic degradation process and kinetic of a standard pollutants using solar radiation and suspended titanium dioxide were performed in a CPC reactor at pilot scale, coupled to a heat exchanger to control of temperature. Methylene Blue was selected as the substance for kinetic analysis. The model of the system includes mass balance of the batch reactor with recycle, based on global isotropic parameters. The incident radiation was modeled using empirical models adjusted using experimental data from environmental reports and optimization algorithms in function of atmospheric variations. The effect of scattering-absorption of radiation inside the reactor was estimated by solving the radiative transfer equation by estimating the local volumetric rate of photon absorption (LVRPA) using the six-flux absorption scattering model (SFM). The effect of the temperature was modeled using a thermal balance coupled to heat transfer equations. The kinetic implemented model was a generalized model with a modification of the temperature on the reaction rate equation by including the Arrhenius equation.It was found that the temperature affected the reaction rates by varying the oxygen concentration during the reaction. Process performance was improved under normal operating conditions without temperature control. The mathematical model and the established solution algorithm were highly predictive, generating correlation coefficients of 0.99 and errors below 2.5%. 2017 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291354828014 https://www.redalyc.org/journal/2913/291354828014/ https://www.redalyc.org/journal/2913/291354828014/html/ https://www.redalyc.org/journal/2913/291354828014/291354828014.epub https://www.redalyc.org/journal/2913/291354828014/movil 10.25100/iyc.v19i2.5301 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.2 Vol.19 |
| title | Modeling and experimental evaluation of a non-isothermal photocatalytic solar reactor: temperature effect on the reaction rate kinetics |
| topic | Ingeniería six TiO2 LVRPA flux model thermal exchange |
| url | https://www.redalyc.org/articulo.oa?id=291354828014 https://www.redalyc.org/journal/2913/291354828014/ https://www.redalyc.org/journal/2913/291354828014/html/ https://www.redalyc.org/journal/2913/291354828014/291354828014.epub https://www.redalyc.org/journal/2913/291354828014/movil |