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Molecular simulation tools to determine the optimal pore size of activated carbon for PAHs adsorption

Authors: Navarro López, María Victoria; López Sebastián, José Manuel; García Martínez, Tomás; Murillo Villuendas, Ramón;

Molecular simulation tools to determine the optimal pore size of activated carbon for PAHs adsorption

Abstract

[ES] Los hidrocarburos aromáticos policíclicos son contaminantes persistentes con alta capacidad cancerígena. Se generan en procesos de combustión y pirólisis de materiales orgánicos por lo que controlar su emisión en gases calientes es de gran importancia. Estudios experimentales previos han demostrado que, debido a su carácter no polar, su adsorción en materiales hidrófobos como carbones activados es una tecnología de control prometedora. En este estudio se utilizan herramientas de simulación molecular para profundizar en el estudio de la adsorción de hidrocarburos aromáticos policíclicos en carbones activados. Se han elegido como modelos la molécula de fenantreno y el poro de carbono de rendija de distintos tamaños. En las condiciones de emisión de estos compuestos a 150 ºC y una presión parcial próxima a 2 Pa, los resultados indican que un tamaño de poro de 17 Å maximizaría la retención de estos contaminantes.

[EN] Polycyclic aromatic hydrocarbons are persistent pollutants with a great carcinogenic capacity. They are generated in combustion and pyrolysis processes of organic materials and their control in hot gases is very important. Previous experimental studies have shown that their adsorption in hydrophobous materials as activated carbons has demonstrated to be a valuable control technology, due to the non-polar character of these molecules. In this study, molecular simulation tools have been utilized to further study the adsorption of these polycyclic aromatic hydrocarbons in activated carbons. Phenanthrene and carbon slit pores of different sizes have been chosen as models of adsorbate molecule and activated carbon. In the conditions of release of these emissions at 150 ºC and partial pressure around 2 Pa, the results have indicated that a pore size of 17 Å would maximize the pollutants retention.

4 Figuras, 1 Tabla

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Spain
Keywords

Hidrocarburos aromáticos policíclicos, Activated carbon, Carbon slit pores, Poro de carbono de rendija, Fenantreno, Polycyclic aromatic hydrocarbon, Phenanthrene, Pirólisis, Molecular simulations, Simulaciones moleculares, Pyrolysis

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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