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Link de reunión de zoom para elección del articulo

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Link de reunión de zoom para elección del articulo

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He selecciona este artículo debido a mi interés en la investigación y desarrollo de tecnologías sostenibles que aborden la contaminación ambiental, y este estudio promete aportar valiosa información sobre cómo reducir la emisión de compuestos orgánicos volátiles utilizando catalizadores basados en metales preciosos y materiales estructurados como la esponja de alúmina.

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He seleccionado este articulo debido a que explica una metodología para reducir los COV´S, La metodología utilizada para la extracción de COV´S se basa en una aplicación ambiental de un producto (MnOX), óxido de manganeso, de un proceso biohidrometalurgia de recuperación de metales de pilas alcalinas, con el cual se realizaron ensayos utilizados como catalizadores para la oxidación de COV´S. Se prepararon tres tipos de MnOX; 1. MnOX residual (RMO) 2. MnOX electrolítico (EMO) 3. MnOX precipitado (PMO) Obtenido por precipitación por permanganato de manganeso presente en el lixiviado.

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He escogido este artículo ya que hace un estudio interesante sobre el mecanismo de adsorción, los valores de la resistencia a la transferencia y masa y la cantidad de COV que puede adsorber un NHPC*

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Selecciono este artículo porque a pesar de no tener un método especifico de eliminación si brinda la información necesaria para que se pueda crear un tratamiento dependiendo de las etapas que se decidan agregar y de la recolección o eliminación de los componentes no volátiles a tratar.

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Selecciono este artículo porque propone de forma detallada y útil una metodología y resultados eficaces para la eliminación de COVs.

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Selecciono este articulo porque tiene una hipótesis comprobada por medio de la experimentación para disminuir las emisiones directas a la atmósfera durante la carga de los tanques cisterna, en donde se adapto al sistema de carga por debajo, ya que este es hermético y permite enviar los vapores de gasolina que se generan por la presencia de producto residual en las paredes de los camiones.

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Visor Redalyc - Estimación emisiones de compuestos orgánicos volátiles, plantel de distribución de combustibles Recope, el Alto de Ochomogo, Cartago, Costa Rica

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En este artículo se expone la extracción de COV´s utilizando un compuesto híbrido que combina una zeolita de origen natural con una estructura metal-orgánica que incorpora cerio.

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ELIMINACIÓN DE COMPUESTOS ORGÁNICOS VOLÁTILES MEDIANTE EL USO DE CATALIZADORES ESTRUCTURADOS A BASE DE ESPONJA DE ALÚMINA IMPREGNADOS CON PALADIO Y PLATINO.

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En este documento se expone una revisión sistemática sobre método de tratamiento de residuos, con la guía del Dr. Lozano Sulca y el esfuerzo de los autores Huaman Coaquira y Esquivel Mendoza.

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eliminación de COVs utilizando óxidos de manganeso obtenidos en un proceso biohidrometalúrgico de recuperación de metales de pilas agotadas

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En este artículo se expone la eliminación de compuestos orgánicos volátiles a través del método de adsorción, utilizando como filtro carbón activado, siendo este destacable al ser más económico, rápido y eficaz que los procesos de condensación y biodegradación

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Williams Álvarez.  Artículo 1 que me parece interesante

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Williams Álvarez.  Artículo 1 que me parece interesante

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I find this article interesting because of the methodology they used.

https://doi.org/10.33936/cognosis.v5i2.1997

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Este artículo nos expone el estudio de la operación unitaria de transferencia de masa adsorción, en  compuestos orgánicos volátiles (VOC) de corrientes de gas sobre carbón activado modificado con ácido DL-málico. El estudio investiga las propiedades de los adsorbentes, los comportamientos de adsorción de acetona y acetato de etilo, y la capacidad de eliminación de VOC del adsorbente modificado. Además, se encontró que las moléculas de adsorbato compiten por los sitios de adsorción, lo que indica la ocurrencia de adsorción competitiva.

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Este artículo muestra porqué la permeación de vapor a base de membranas es un tratamiento de COV de origen antropogénico es económico y puede ser acoplado a otros procesos como la adsorción o condensación

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APLICACIONES DE LA PERMEACIÓN DE VAPOR: EL TRATAMIENTO DE COMPUESTOS ORGÁNICOS VOLÁTILES DE ORIGEN ANTROPOGÉNICO

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Vapour permeation is a membrane separating process that has been used since several decades for gas separation and it has been recently and successfully applied in treatment of volatile organic compounds (VOC) charged gaseous effluents. It presents several advantages compared to conventional processes for gas effluent treatment (e.g.

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Esta investigación contiene estimación y selección del sistema de criocondensación para el tratamiento de emisiones de COV de un plantel de distribución de combustibles en Costa rica

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Visor Redalyc - Estimación emisiones de compuestos orgánicos volátiles, plantel de distribución de combustibles Recope, el Alto de Ochomogo, Cartago, Costa Rica

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Método experimental para la eliminación de COVs por medio de óxido de cromo mesoporoso

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Increasingly strict legislation for controlling the emission to the atmosphere of industrial volatile organic compounds (VOCs), which contribute to photochemical smog, ground level ozone and toxic air emissions [1], [2], [3], [4], has made catalytic combustion of hydrocarbons a vital topic of research, aimed at developing new processes for limiting air pollution by VOCs [5]. Oxides of transition metals like Mn, Cr, Cu, Co are typical cost-effective catalysts for complete oxidation of VOCs [6], [7], [8], [9]. Crystalline chromium oxide which favors the formation of CO ₂ could be the most promising candidate for the total oxidation of organics [10].

Ordered mesostructured transition metal oxides [11], [12] are of immense interest in areas such as catalysis, sorption, chemical and biological separation, photonic and electronic devices, and drug delivery [13]. Preparation of well ordered mesoporous oxides of Mn [14], Ti [15], [16], V [17], Zr [18], W [15], Nb [15], [17], Ta [15], [18] have been successfully reported. Recently, hexagonally ordered mesoporous nickel oxide [19] and wormhole-like mesoporous iron oxide [20] have been reported. But, a nanoporous 3D structure of oxides is more suitable for application as catalyst or adsorbent due to an easier diffusion of reactants by overcoming mass-transfer limitations [21]. However, the preparation of three-dimensionally (3D) ordered mesoporous oxides of Cu, Co, Cr, Ni, Fe have been most difficult, although it is possible to prepare unstable lamellar phases of these materials. Transitional metal oxides are more susceptible to hydrolysis, redox reactions or phase transitions and possess a number of different coordination numbers and oxidation states, making it rather difficult to prepare their mesoporous structure unlike silica and aluminosilicates which can easily form stable mesoporous structure. The neutral templating route has been successfully used for the synthesis of metal oxide mesostructures [11], [15] that have been less readily accessible by electrostatic templating pathways [12], [16].

For transition metal oxides, controlling the rates of precursor hydrolysis, condensation of metal species and precipitation of mesostructured oxides, for example, by slow crystallization, is an important prerequisite for enhanced framework cross-linking [22], [23] leading to a stable mesoporous structure. So, we used a metal nitrate salt precursor, a mixed non-aqueous, ethylene glycol-propanol medium and poly(alkylene oxide) block copolymers as templates, to prepare a very stable 3D mesoporous structure. The mixed non-aqueous medium allows a very slow crystallization (gelation) process which favors the formation of a stable mesostructure via enhanced framework cross-linking. In our recent communication [24], we demonstrated for the first time that a 3D mesoporous chromium oxide material, prepared by a neutral templating route, shows exceptionally high VOCs (toluene, acetaldehyde) removal/oxidation ability after calcination. Our intention was to exploit such materials with 3D mesoporosity, high surface area, high oxidizing power along with probable ready evolution of active lattice oxygen, to prepare a commercially viable, cost-effective catalyst/sorbent system for efficient removal of VOCs at low temperatures. Herein, we present further characterization and evaluation of 3D mesoporous chromium oxide for the VOC elimination application.

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Novel mesoporous chromium oxide for VOCs elimination

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A 3D mesoporous chromium oxide prepared by a neutral templating route showed exceptionally high capacity for the elimination of volatile organic compo...

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Avances recientes en la eliminación de COV mediante tecnología de oxidación catalítica de manopartículas

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Maria Fernanda Cacheo

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Este artículo presenta una tecnología innovadora para la eliminación de COVs mediante la catálisis fototérmica

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Highlights

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The fundamentals and design strategies of photothermal catalysts are concluded.

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VOC photothermal performance is unified for comparison under different system.

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The photothermal mechanisms in VOC oxidation are emphasized.

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Potential research direction and challenge of photothermal catalysis are summarized.

Abstract

Photothermal catalysis realizes the synergistic effect of solar energy and thermochemistry, which also has the potential to improve the reaction rate and optimize the selectivity. In this review, the research progress of photothermal catalytic removal of volatile organic compounds (VOCs) by nano-catalysts in recent years is systematically reviewed. First, the fundamentals of photothermal catalysis and the fabrication of catalysts are described, and the design strategy of optimizing photothermal catalysis performance is proposed. Second, the performance for VOC degradation with photothermal catalysis is evaluated and compared for the batch and continuous systems. Particularly, the catalytic mechanism of VOC oxidation is systematically introduced based on experimental and theoretical study. Finally, the future limitations and challenges have been discussed, and potential research directions and priorities are highlighted. A broad view of recent photothermal catalyst fabrication, applications, challenges, and prospects can be systemically provided by this review.

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Recent advancement and future challenges of photothermal catalysis for VOCs elimination: From catalyst design to applications

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Photothermal catalysis realizes the synergistic effect of solar energy and thermochemistry, which also has the potential to improve the reaction rate ...

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Es interesante por la factibilidad y eficacia de este método para la eliminación de COVs

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In past decades, the emission of volatile organic compounds (VOCs) from industries and transportation has greatly increased, which are highly detrimental to the whole ecosystem. It is reported that anthropogenic non-methane VOCs emissions in China increased by dramatically 192% from 9.76 Tg in 1990 to 28.5 Tg in 2017 (Li et al., 2019b). Most VOCs are poisonous and carcinogenic to humans such as benzene, formaldehyde, vinyl chloride, polychlorinated biphenyls, and so on, which have been classified as Group 1 carcinogen protoplasmic poison by the International Agency for Research on Cancer (IARC, 2021). Furthermore, as the key precursors of the formation of ozone (O ₃) and secondary organic aerosols (SOA), the growth of VOCs arouses a substantial increase in particulate matter and ozone pollution (He et al., 2019b, Li et al., 2019a). China proposed comprehensive prevention and control on VOCs since 2016 (The State Council of the People's Republic of China, 2016), and called for a 10% decrease in VOCs emissions during the latest 14th Five-Year Plan (2021-2025) (The State Council of the People's Republic of China, 2021). Considering the environmental impact and toxicity of VOCs, and the increasingly tightening regulations, more effective VOCs removal technologies are required accordingly to reduce its global emissions.

Numerous techniques, including non-destructive and destructive technologies, have been used for eliminating VOCs. The former includes adsorption, absorption, condensation and membrane separation, and the latter includes catalytic oxidation, thermal incineration, non-thermal plasma, photocatalytic degradation, and biological treatment, as summarized in Table 1. However, each technology has its limitations in removal efficiency, energy consumption, by-products as well as safety (Khan and K. Ghoshal, 2000). A technology enabling complete oxidation of VOCs at low temperature is urgently needed.

Ozone, as a strong oxidant, has been widely used in many areas (Oyama, 2000). An important application of ozone was for pollution elimination including wastewater treatment (Langlais et al., 2019) and exhaust gas treatment (Lin et al., 2016, Wang et al., 2016a), as well as inactivating microorganisms (Deng et al., 2020). Ozone has been confirmed to be more effective than oxygen in pollutant oxidation. Furthermore, ozone only decomposes to oxygen, leaving no residues in the treatment process (Dhandapani and Oyama, 1997, Li et al., 2020a). Inspired by these advantages, ozone is applied to VOCs elimination, i.e., catalytic ozonation of VOCs. This process greatly reduces the reaction temperature and significantly saves energy compared to conventional catalytic oxidation, even for the refractory pollutants. A main environmental concern was the secondary pollution by the emitted residual ozone from catalytic ozonation. This can be well addressed as the complete removal of ozone at room temperature is available by using developed catalysts (Liu et al., 2018, Ji et al., 2019, Yu et al., 2019, Yu et al., 2020). In fact, ozone is also polluting in industrial exhaust and indoor air. It kills two birds with one stone to put ozone into utilization while eliminating ozone pollution. Due to the advantages of catalytic ozonation, which is highly efficient, economically feasible, and environmentally friendly, the application of ozone in VOCs removal has gradually attracted great attention in recent years.

To the best of our knowledge, there are only few reviews related to the catalytic ozonation of VOCs (Lin et al., 2020a). This review starts with a brief introduction to the physicochemical properties of ozone and subsequently discusses the reaction mechanism of catalytic ozonation of VOCs, the latest progress in catalytic materials, catalytic ozonation for different types of VOCs removal, and the influence of reaction condition (water vapor and temperature). Afterward, the combined processes of catalytic ozonation with ozone-generating technologies for VOCs removal are reviewed. Finally, the perspective of catalytic ozonation for VOCs elimination is discussed. This review will help to understand the emerging advances of the application of ozone in catalytic oxidation of VOCs at low temperature and its potential application in various industrial processes and indoor environments. It will also inspire more research enthusiasms on exploring more mechanistic insights to catalytic ozonation and be instructive to the rational design of novel catalysts based on the essential property of pollutants.

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Catalytic ozonation of VOCs at low temperature: A comprehensive review

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VOCs abatement has attracted increasing interest because of the detrimental effects on both atmospheric environment and human beings of VOCs. The assi...