Francisco Anguebes - Academia.edu (original) (raw)
Papers by Francisco Anguebes
Journal of Renewable and Sustainable Energy, 2020
This work studies the economic feasibility of using a hybrid solar energy system to satisfy the t... more This work studies the economic feasibility of using a hybrid solar energy system to satisfy the thermal demand in industrial processes. From an artificial intelligence perspective, a modeling and computational optimization methodology was developed for the design of a hybrid solar thermal plant. Modeling is applied to satisfy the needs of a pasteurization process in the region of Jalisco, Mexico. Scenarios with four different types of fossil fuels used in the backup system were analyzed. According to the optimization results, all the backup fossil fuel scenarios demonstrate economic viability. Furthermore, the present value studies indicate that under the appropriate climatic conditions, for the four auxiliary fuel scenarios, the optimization methodology can produce economically attractive configurations of the solar thermal plant for investors. The presented methodological procedure can be easily adapted and used to analyze the financial competitiveness of other solar thermal technologies for the industrial heat generation.
Journal of Chemistry, 2019
Amazon sailfin catfish (Pterygoplichthys pardalis) is considered one of the greatest threats to t... more Amazon sailfin catfish (Pterygoplichthys pardalis) is considered one of the greatest threats to the biodiversity of continental aquatic systems, causing serious economic and environmental problems in the regions. In this work, the production of biodiesel from Amazon sailfin catfish biomass oil is studied. The physical and chemical properties of biofuel produced were evaluated under the specifications of the European standard EN-14214 by using gas chromatography-mass spectrometry, infrared spectroscopy, and atomic absorption spectrometry analyses. The results show that the biodiesel complies with all the specifications of the standard, except the content of polyunsaturated methyl esters. The yields obtained from oil and biodiesel were 9.67 and 90.71% (m/m), respectively. The methyl ester concentrations study identified 17 components where 47.003% m/m corresponded to methyl esters with saturated chains, whereas 34.394% m/m was attributed to monosaturated methyl esters and the remainin...
Open Journal of Ecology, 2016
In this study, African crude palm olein (CPO) was used to synthesize biodiesel. The objective was... more In this study, African crude palm olein (CPO) was used to synthesize biodiesel. The objective was to determine the optimal reaction conditions for the methanolysis of olein. The used CPO had a 5.72% concentration of free fatty acids (FFA); thus, the production of biodiesel was carried out in two stages: 1) esterification using sulfuric acid and 2) transesterification using sodium methoxide. In order to optimize the yield of biodiesel during the transesterification process, a central rotatable design and the response surface methodology were used. The studied variables were: catalyst loading, reaction time and reaction temperature. The analysis of variance showed that the variables with significant effect were the catalyst loading, reaction temperature and reaction time; as well as the catalyst loading * reaction temperature and catalyst loading * reaction time. Results indicate that the optimal reaction conditions during transesterification are: 0.65% catalyst loading (wt/wtaceite), reaction time of 135 min and a reaction temperature of 56˚C. The optimal reaction conditions during esterification are: 2.5% weight of catalyst, reaction time of 150 min and a reaction temperature of 64.5˚C. Under these conditions, a 90% yield of biodiesel was obtained.
영어교육연구, Mar 30, 2011
The purpose of this qualitative study is to investigate online students’ attitudes toward problem... more The purpose of this qualitative study is to investigate online students’ attitudes toward problem-based assessment in an English language course...
Estudios de Cultura Maya, 2018
La cría de la abeja sin aguijón ko’olel kaab (Melipona beecheii) es una actividad ancestral en ví... more La cría de la abeja sin aguijón ko’olel kaab (Melipona beecheii) es una actividad ancestral en vía de desaparición en la reserva Los Petenes. Por su importancia en la estrategia familiar en el área natural protegida y la conservación de la diversidad de especies de abejas nativas, se planteó el estudio de la situación y perspectivas de la meliponicultura en dicha área. Se usaron encuestas semiestructuradas, entrevistas con informantes clave y observación participante. Los resultados muestran que solo seis comunidades de las 17 manejan la abeja ko’olel kaab, los meliponicultores están constituidos mayoritariamente por hombres de edad avanzada con débil organización social. La perspectiva de la meliponicultura es alentadora porque se ubica en un área natural protegida y, el conocimiento y manejo tradicional aún persiste y la realizan familias mayas para uso medicinal y ceremonial. El mercado y el valor cultural de la meliponicultura son factores que pueden contribuir a su rescate.
DESALINATION AND WATER TREATMENT, 2017
Energies, 2018
In this work, the effect of zeolite montmorillonite KSF in the esterification of free fatty acids... more In this work, the effect of zeolite montmorillonite KSF in the esterification of free fatty acids (FFAs) of crude African palm olein (Eleaias guinnesis Jacq) was studied. To optimize the esterification of FFAs of the crude African palm olein (CAPO), the response surface methodology (RSM) that was based on a central composite rotatable design (CCRD) was used. The effects of three parameters were investigated: (a) catalyst loading (2.6-9.4 wt %), (b) reaction temperature (133.2-166.2 • C), and (c) reaction time (0.32-3.68 h). The Analysis of variance (ANOVA) indicated that linear terms of catalyst loading (X 1), reaction temperature (X 2), the quadratic term of catalyst loading (X 2 1), temperature reaction (X 2 2), reaction time (X 2 3), the interaction catalyst loading with reaction time (X * 1 X 3), and the interaction reaction temperature with reaction time (X * 2 X 3) have a significant effect (p < 0.05 with a 95% confidence level) on Fatty Methyl Ester (FAME) yield. The result indicated that the optimum reaction conditions to esterification of FFAs were: catalyst loading 9.4 wt %, reaction temperature 155.5 • C, and 3.3 h for reaction time, respectively. Under these conditions, the numerical estimation of FAME yield was 91.81 wt %. This result was experimentally validated obtaining a difference of 1.7% FAME yield, with respect to simulated values.
2021 18th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE), 2021
The selection of operating conditions in the oil and gas separation plants is obtained through da... more The selection of operating conditions in the oil and gas separation plants is obtained through data monitoring or through the experience of the operating personnel which can bring operational difficulties leading to inefficiencies and capital loss. The modern techniques of soft computing including artificial intelligence and genetic algorithm-based optimization can add value to this operation. In this work, five key controllable design variables of an oil and gas separation plant are optimized considering two performance indicators (oil flow productivity and gas compression power). The physical model of the plant is simulated using ASPEN HYSYS, and a digital twin model is generated using an artificial neural network. It is followed by a multiobjective optimization using non-dominating sorting genetic algorithm II to obtain the Pareto front. The results have indicated that operational optimization can enhance oil production by up to ∼6.2% and decrease the compression work by ∼3.2%. I...
American Journal of Analytical Chemistry, 2013
The increasing use of petrodiesel-biodiesel fuel blends throughout the world requires fast, econo... more The increasing use of petrodiesel-biodiesel fuel blends throughout the world requires fast, economic and efficient analytical techniques that can be used for the quality control of these fuels. In this work, we developed an analytical method for determining the concentration of African palm biodiesel in blends with petrodiesel; the method is based on infrared spectroscopy (FTIR-ATR). To build a prediction model, nineteen petrodiesel-biodiesel blends were prepared in triplicate with biodiesel concentrations for 0%-100% by weight. The blends were analyzed using Fourier transform infrared spectroscopy, the spectral fingerprint data were used to build a prediction model through PLS regression. The optimal number of principal components (PCs), the standard error of calibration (SEC), the standard validation error (SEV), the correlation coefficient of calibration (r Cal) and the validation correlation coefficient (r Val) were used to validate the predictive ability of the model. The results show that the model obtained in this work has a good ability for determining the concentration of African palm biodiesel in petrodiesel-biodiesel blends.
Environment and Pollution, 2014
Some heavy metals and trace metals reach aquatic ecosystems from natural and anthropogenic source... more Some heavy metals and trace metals reach aquatic ecosystems from natural and anthropogenic sources, and are considered some of the most important environmental contaminants due to their toxicity, persistence and tendency to accumulate in aquatic organisms. Thus, their study is needed due to the environmental risk they pose. Concentrations of Cu, Cd, Mg, Fe and Mn in recent sediments of the deltaic lagoon-river system of the Palizada river, Campeche, Mexico were determined for three climatic seasons on the 2010 annual cycle. The results confirmed that the climatic season has great influence over the results variability. The highest levels of Cu, Fe and Mn were found during dry season, which may suggest significant evaporation phenomena in the area. Both Fe and Mn are abundant elements in the Earth crust; their concentrations could be related to the study area's characteristics, given the conjunction of two sedimentary provinces: terrigenous in the western portion and carbonated in the eastern. On the other hand, the results suggest a high relationship of Fe-Mn (r = 0.5131), Fe-clay (r = 0.5978), Cu-Mn (r = 0.8707), Cu-clay (0.8501) and Mn-clay (0.9311). The latter confirms the high dependence of these elements and the great affinity of some metallic elements for finer sediments. In conjunction, the climatic season and the sediment's characteristics are essential for metal mobilization and transport. Likewise, the Cd and Cu levels reported are lower than international parameter, indicating value ranges that could cause effects in exposed organisms.
American Journal of Analytical Chemistry, 2013
system
The static gravimetric method, along with different saturated salt solutions, was used in a range... more The static gravimetric method, along with different saturated salt solutions, was used in a range of water activity (a w) of 0.11-0.88, and at 288.15, 298.15 y 308.15 K, to obtain sorption isotherms of freeze-dried pulp of mango. At a given a w the results show that the moisture content decreases with increasing temperature. BET, G.A.B, Halsey, Henderson, Oswin and Smith were evaluated to determine the best fit for the experimental data. A nonlinear regression-analysis method was used to evaluate the constants of equations. The BET and GAB models were the most suitable to described the sorption curves; the monolayer-content values for the sorption at different temperatures are calculated. The isosteric sorption heat was determines for adsorption of freeze-dried pulp of mango using the relevant thermodynamic relations (i.e., Clausius Clapeyron equation).
Applied Spectroscopy, 2004
This paper investigates the use of Fourier transform infrared (FTIR) attenuated total reflectance... more This paper investigates the use of Fourier transform infrared (FTIR) attenuated total reflectance (ATR) spectroscopy as a fast and simple way for direct determination of nitrate concentration in soil pastes, which would assist precision fertilizer placement and reduce nitrate pollution. Eight types of soils are investigated, with nitrate concentrations ranging from 0 to 1000 ppm-N. The spectral region around the nitrate band (1300-1550 cm(-1)) is analyzed by (1) principal component regression (PCR), (2) partial least squares (PLS), and (3) cross-correlation with reference libraries that include spectra of pure ions and/or soils. The main obstacle to accurate nitrate measurement appears to be an interfering band present in calcareous soils. This band, which may be due to carbonate, is located around 1450 cm(-1) and overlaps with the nitrate band centered around 1370 cm(-1). For non-calcareous soils, and in particular for light sandy agricultural soils, PLS and cross-correlation with a reference library containing only spectra of ions in water give similar results (about 8 ppm-N on dry soil basis), while PCR leads to slightly poorer results. When calcareous soils are included in the analysis, the prediction errors are about twice as large. In this case, the best results are obtained using PLS, followed by PCR, while cross-correlation with reference libraries leads to poorer results.
Processes, 2019
Two advanced removal methods (adsorption and photocatalysis) were compared for the elimination of... more Two advanced removal methods (adsorption and photocatalysis) were compared for the elimination of an ethoxylated alkylphenol (nonylphenol polyethylene glycol, NPEG). For the adsorption process, zeolites were used in their natural state, and the process was characterized by DRX (X-ray diffraction) and SEM–EDS (Scanning electron microscopy). The analysis of the results of the adsorption kinetics was carried out using different isotherms to interpret the removal capacity of zeolites. The Temkin kinetic model better predicted the experimental data and was satisfactorily adjusted to models of pseudo-second order (PSO). On the other hand, for photocatalysis, nano-particles of Ag (silver) were deposited on titanium oxide (TiO2) Degussa-P25 by photo-deposition, and the catalyst was characterized by diffuse reflectance and SEM–EDS. The data obtained using the two removal techniques were analyzed by UV–Vis (ultraviolet-visible spectrophotometry) and total organic carbon (TOC). The kinetic dat...
Este trabajo presenta un estudio teorico sobre modelado y simulacion procesos industriales, ocupa... more Este trabajo presenta un estudio teorico sobre modelado y simulacion procesos industriales, ocupando la destilacion continua como caso de estudio. Se presenta el concepto de experimentacion numerica como una metodologia consistente en adquirir datos partiendo del proceso real o de su disponibilidad en la literatura, obtener el modelo matematico del proceso, simular el modelo a traves de la resolucion del sistema de ecuaciones generado, optimizar el sistema acorde a los requerimientos de operacion e incentivos economicos, y finalmente, analizar los resultados. Se dejan claros los alcances de la experimentacion numerica y se aplica la metodologia al analisis de un proceso de destilacion discontinua considerando su relevancia en la industria quimica.
Current Air Quality Issues, 2015
International Journal of Environmental Science and Technology
Información …, 2004
... F. Anguebes-Franseschi 1 , E. Bolaños-Reynoso 2 , A. Castro-Montoya 3 y D. Cantú-Lozano 2. ..... more ... F. Anguebes-Franseschi 1 , E. Bolaños-Reynoso 2 , A. Castro-Montoya 3 y D. Cantú-Lozano 2. ... 2.3 moles de cloruro de litio por kilogramo de solución, se obtiene el mayor efecto sobre el punto azeotrópico, considerando la manipulación del reflujo y la concentración de la sal. ...
Journal of Renewable and Sustainable Energy, 2020
This work studies the economic feasibility of using a hybrid solar energy system to satisfy the t... more This work studies the economic feasibility of using a hybrid solar energy system to satisfy the thermal demand in industrial processes. From an artificial intelligence perspective, a modeling and computational optimization methodology was developed for the design of a hybrid solar thermal plant. Modeling is applied to satisfy the needs of a pasteurization process in the region of Jalisco, Mexico. Scenarios with four different types of fossil fuels used in the backup system were analyzed. According to the optimization results, all the backup fossil fuel scenarios demonstrate economic viability. Furthermore, the present value studies indicate that under the appropriate climatic conditions, for the four auxiliary fuel scenarios, the optimization methodology can produce economically attractive configurations of the solar thermal plant for investors. The presented methodological procedure can be easily adapted and used to analyze the financial competitiveness of other solar thermal technologies for the industrial heat generation.
Journal of Chemistry, 2019
Amazon sailfin catfish (Pterygoplichthys pardalis) is considered one of the greatest threats to t... more Amazon sailfin catfish (Pterygoplichthys pardalis) is considered one of the greatest threats to the biodiversity of continental aquatic systems, causing serious economic and environmental problems in the regions. In this work, the production of biodiesel from Amazon sailfin catfish biomass oil is studied. The physical and chemical properties of biofuel produced were evaluated under the specifications of the European standard EN-14214 by using gas chromatography-mass spectrometry, infrared spectroscopy, and atomic absorption spectrometry analyses. The results show that the biodiesel complies with all the specifications of the standard, except the content of polyunsaturated methyl esters. The yields obtained from oil and biodiesel were 9.67 and 90.71% (m/m), respectively. The methyl ester concentrations study identified 17 components where 47.003% m/m corresponded to methyl esters with saturated chains, whereas 34.394% m/m was attributed to monosaturated methyl esters and the remainin...
Open Journal of Ecology, 2016
In this study, African crude palm olein (CPO) was used to synthesize biodiesel. The objective was... more In this study, African crude palm olein (CPO) was used to synthesize biodiesel. The objective was to determine the optimal reaction conditions for the methanolysis of olein. The used CPO had a 5.72% concentration of free fatty acids (FFA); thus, the production of biodiesel was carried out in two stages: 1) esterification using sulfuric acid and 2) transesterification using sodium methoxide. In order to optimize the yield of biodiesel during the transesterification process, a central rotatable design and the response surface methodology were used. The studied variables were: catalyst loading, reaction time and reaction temperature. The analysis of variance showed that the variables with significant effect were the catalyst loading, reaction temperature and reaction time; as well as the catalyst loading * reaction temperature and catalyst loading * reaction time. Results indicate that the optimal reaction conditions during transesterification are: 0.65% catalyst loading (wt/wtaceite), reaction time of 135 min and a reaction temperature of 56˚C. The optimal reaction conditions during esterification are: 2.5% weight of catalyst, reaction time of 150 min and a reaction temperature of 64.5˚C. Under these conditions, a 90% yield of biodiesel was obtained.
영어교육연구, Mar 30, 2011
The purpose of this qualitative study is to investigate online students’ attitudes toward problem... more The purpose of this qualitative study is to investigate online students’ attitudes toward problem-based assessment in an English language course...
Estudios de Cultura Maya, 2018
La cría de la abeja sin aguijón ko’olel kaab (Melipona beecheii) es una actividad ancestral en ví... more La cría de la abeja sin aguijón ko’olel kaab (Melipona beecheii) es una actividad ancestral en vía de desaparición en la reserva Los Petenes. Por su importancia en la estrategia familiar en el área natural protegida y la conservación de la diversidad de especies de abejas nativas, se planteó el estudio de la situación y perspectivas de la meliponicultura en dicha área. Se usaron encuestas semiestructuradas, entrevistas con informantes clave y observación participante. Los resultados muestran que solo seis comunidades de las 17 manejan la abeja ko’olel kaab, los meliponicultores están constituidos mayoritariamente por hombres de edad avanzada con débil organización social. La perspectiva de la meliponicultura es alentadora porque se ubica en un área natural protegida y, el conocimiento y manejo tradicional aún persiste y la realizan familias mayas para uso medicinal y ceremonial. El mercado y el valor cultural de la meliponicultura son factores que pueden contribuir a su rescate.
DESALINATION AND WATER TREATMENT, 2017
Energies, 2018
In this work, the effect of zeolite montmorillonite KSF in the esterification of free fatty acids... more In this work, the effect of zeolite montmorillonite KSF in the esterification of free fatty acids (FFAs) of crude African palm olein (Eleaias guinnesis Jacq) was studied. To optimize the esterification of FFAs of the crude African palm olein (CAPO), the response surface methodology (RSM) that was based on a central composite rotatable design (CCRD) was used. The effects of three parameters were investigated: (a) catalyst loading (2.6-9.4 wt %), (b) reaction temperature (133.2-166.2 • C), and (c) reaction time (0.32-3.68 h). The Analysis of variance (ANOVA) indicated that linear terms of catalyst loading (X 1), reaction temperature (X 2), the quadratic term of catalyst loading (X 2 1), temperature reaction (X 2 2), reaction time (X 2 3), the interaction catalyst loading with reaction time (X * 1 X 3), and the interaction reaction temperature with reaction time (X * 2 X 3) have a significant effect (p < 0.05 with a 95% confidence level) on Fatty Methyl Ester (FAME) yield. The result indicated that the optimum reaction conditions to esterification of FFAs were: catalyst loading 9.4 wt %, reaction temperature 155.5 • C, and 3.3 h for reaction time, respectively. Under these conditions, the numerical estimation of FAME yield was 91.81 wt %. This result was experimentally validated obtaining a difference of 1.7% FAME yield, with respect to simulated values.
2021 18th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE), 2021
The selection of operating conditions in the oil and gas separation plants is obtained through da... more The selection of operating conditions in the oil and gas separation plants is obtained through data monitoring or through the experience of the operating personnel which can bring operational difficulties leading to inefficiencies and capital loss. The modern techniques of soft computing including artificial intelligence and genetic algorithm-based optimization can add value to this operation. In this work, five key controllable design variables of an oil and gas separation plant are optimized considering two performance indicators (oil flow productivity and gas compression power). The physical model of the plant is simulated using ASPEN HYSYS, and a digital twin model is generated using an artificial neural network. It is followed by a multiobjective optimization using non-dominating sorting genetic algorithm II to obtain the Pareto front. The results have indicated that operational optimization can enhance oil production by up to ∼6.2% and decrease the compression work by ∼3.2%. I...
American Journal of Analytical Chemistry, 2013
The increasing use of petrodiesel-biodiesel fuel blends throughout the world requires fast, econo... more The increasing use of petrodiesel-biodiesel fuel blends throughout the world requires fast, economic and efficient analytical techniques that can be used for the quality control of these fuels. In this work, we developed an analytical method for determining the concentration of African palm biodiesel in blends with petrodiesel; the method is based on infrared spectroscopy (FTIR-ATR). To build a prediction model, nineteen petrodiesel-biodiesel blends were prepared in triplicate with biodiesel concentrations for 0%-100% by weight. The blends were analyzed using Fourier transform infrared spectroscopy, the spectral fingerprint data were used to build a prediction model through PLS regression. The optimal number of principal components (PCs), the standard error of calibration (SEC), the standard validation error (SEV), the correlation coefficient of calibration (r Cal) and the validation correlation coefficient (r Val) were used to validate the predictive ability of the model. The results show that the model obtained in this work has a good ability for determining the concentration of African palm biodiesel in petrodiesel-biodiesel blends.
Environment and Pollution, 2014
Some heavy metals and trace metals reach aquatic ecosystems from natural and anthropogenic source... more Some heavy metals and trace metals reach aquatic ecosystems from natural and anthropogenic sources, and are considered some of the most important environmental contaminants due to their toxicity, persistence and tendency to accumulate in aquatic organisms. Thus, their study is needed due to the environmental risk they pose. Concentrations of Cu, Cd, Mg, Fe and Mn in recent sediments of the deltaic lagoon-river system of the Palizada river, Campeche, Mexico were determined for three climatic seasons on the 2010 annual cycle. The results confirmed that the climatic season has great influence over the results variability. The highest levels of Cu, Fe and Mn were found during dry season, which may suggest significant evaporation phenomena in the area. Both Fe and Mn are abundant elements in the Earth crust; their concentrations could be related to the study area's characteristics, given the conjunction of two sedimentary provinces: terrigenous in the western portion and carbonated in the eastern. On the other hand, the results suggest a high relationship of Fe-Mn (r = 0.5131), Fe-clay (r = 0.5978), Cu-Mn (r = 0.8707), Cu-clay (0.8501) and Mn-clay (0.9311). The latter confirms the high dependence of these elements and the great affinity of some metallic elements for finer sediments. In conjunction, the climatic season and the sediment's characteristics are essential for metal mobilization and transport. Likewise, the Cd and Cu levels reported are lower than international parameter, indicating value ranges that could cause effects in exposed organisms.
American Journal of Analytical Chemistry, 2013
system
The static gravimetric method, along with different saturated salt solutions, was used in a range... more The static gravimetric method, along with different saturated salt solutions, was used in a range of water activity (a w) of 0.11-0.88, and at 288.15, 298.15 y 308.15 K, to obtain sorption isotherms of freeze-dried pulp of mango. At a given a w the results show that the moisture content decreases with increasing temperature. BET, G.A.B, Halsey, Henderson, Oswin and Smith were evaluated to determine the best fit for the experimental data. A nonlinear regression-analysis method was used to evaluate the constants of equations. The BET and GAB models were the most suitable to described the sorption curves; the monolayer-content values for the sorption at different temperatures are calculated. The isosteric sorption heat was determines for adsorption of freeze-dried pulp of mango using the relevant thermodynamic relations (i.e., Clausius Clapeyron equation).
Applied Spectroscopy, 2004
This paper investigates the use of Fourier transform infrared (FTIR) attenuated total reflectance... more This paper investigates the use of Fourier transform infrared (FTIR) attenuated total reflectance (ATR) spectroscopy as a fast and simple way for direct determination of nitrate concentration in soil pastes, which would assist precision fertilizer placement and reduce nitrate pollution. Eight types of soils are investigated, with nitrate concentrations ranging from 0 to 1000 ppm-N. The spectral region around the nitrate band (1300-1550 cm(-1)) is analyzed by (1) principal component regression (PCR), (2) partial least squares (PLS), and (3) cross-correlation with reference libraries that include spectra of pure ions and/or soils. The main obstacle to accurate nitrate measurement appears to be an interfering band present in calcareous soils. This band, which may be due to carbonate, is located around 1450 cm(-1) and overlaps with the nitrate band centered around 1370 cm(-1). For non-calcareous soils, and in particular for light sandy agricultural soils, PLS and cross-correlation with a reference library containing only spectra of ions in water give similar results (about 8 ppm-N on dry soil basis), while PCR leads to slightly poorer results. When calcareous soils are included in the analysis, the prediction errors are about twice as large. In this case, the best results are obtained using PLS, followed by PCR, while cross-correlation with reference libraries leads to poorer results.
Processes, 2019
Two advanced removal methods (adsorption and photocatalysis) were compared for the elimination of... more Two advanced removal methods (adsorption and photocatalysis) were compared for the elimination of an ethoxylated alkylphenol (nonylphenol polyethylene glycol, NPEG). For the adsorption process, zeolites were used in their natural state, and the process was characterized by DRX (X-ray diffraction) and SEM–EDS (Scanning electron microscopy). The analysis of the results of the adsorption kinetics was carried out using different isotherms to interpret the removal capacity of zeolites. The Temkin kinetic model better predicted the experimental data and was satisfactorily adjusted to models of pseudo-second order (PSO). On the other hand, for photocatalysis, nano-particles of Ag (silver) were deposited on titanium oxide (TiO2) Degussa-P25 by photo-deposition, and the catalyst was characterized by diffuse reflectance and SEM–EDS. The data obtained using the two removal techniques were analyzed by UV–Vis (ultraviolet-visible spectrophotometry) and total organic carbon (TOC). The kinetic dat...
Este trabajo presenta un estudio teorico sobre modelado y simulacion procesos industriales, ocupa... more Este trabajo presenta un estudio teorico sobre modelado y simulacion procesos industriales, ocupando la destilacion continua como caso de estudio. Se presenta el concepto de experimentacion numerica como una metodologia consistente en adquirir datos partiendo del proceso real o de su disponibilidad en la literatura, obtener el modelo matematico del proceso, simular el modelo a traves de la resolucion del sistema de ecuaciones generado, optimizar el sistema acorde a los requerimientos de operacion e incentivos economicos, y finalmente, analizar los resultados. Se dejan claros los alcances de la experimentacion numerica y se aplica la metodologia al analisis de un proceso de destilacion discontinua considerando su relevancia en la industria quimica.
Current Air Quality Issues, 2015
International Journal of Environmental Science and Technology
Información …, 2004
... F. Anguebes-Franseschi 1 , E. Bolaños-Reynoso 2 , A. Castro-Montoya 3 y D. Cantú-Lozano 2. ..... more ... F. Anguebes-Franseschi 1 , E. Bolaños-Reynoso 2 , A. Castro-Montoya 3 y D. Cantú-Lozano 2. ... 2.3 moles de cloruro de litio por kilogramo de solución, se obtiene el mayor efecto sobre el punto azeotrópico, considerando la manipulación del reflujo y la concentración de la sal. ...