Spherical activated carbons for the adsorption of a real multicomponent VOC mixture

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Title: Spherical activated carbons for the adsorption of a real multicomponent VOC mixture
Authors: Ouzzine, Mohammed | Romero Anaya, Aroldo José | Lillo-Rodenas, Maria Angeles | Linares-Solano, Angel
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Spherical activated carbons | Adsorption | Real multicomponent | VOC mixture
Knowledge Area: Química Inorgánica
Issue Date: Jul-2019
Publisher: Elsevier
Citation: Carbon. 2019, 148: 214-223. doi:10.1016/j.carbon.2019.03.075
Abstract: The objective of this work is to study the adsorption of a multicomponent gaseous mixture (acetaldehyde, formaldehyde, 2-propenal, 1,3-butadiene and benzene) in which the components are present at different concentration on spherical activated carbons (SACs). Attention is paid to the influence of the carbons’ properties on such adsorption, especially their porosities and distributions. For this purpose, a series of spherical activated carbons were prepared by physical activation with CO2 of a commercial spherical carbon. Their physico-chemical properties were characterized by N2 and CO2 isotherms, temperature programmed desorption and scanning electron microscopy. Measurements of the adsorption of the volatile organic compounds (VOC) mixture on SACs were performed in a flow-typed fixed bed system at room temperature under atmospheric pressure. Regarding porosity, our results show that, for this particular mixture, SACs with narrow micropore size distribution and moderate porous texture development (surface area in the range of 1000 m2/g or even lower) exhibit higher multicomponent adsorption capacities than others with much larger porosities. This can be explained considering that the VOC present in larger concentration in the mixture, aldehydes, present low adsorption affinities and their adsorption is enhanced in adsorbents with narrow micropore size distribution.
Sponsor: The authors would like to thank Philip Morris International (PMI) for financial support.
URI: http://hdl.handle.net/10045/91218
ISSN: 0008-6223 (Print) | 1873-3891 (Online)
DOI: 10.1016/j.carbon.2019.03.075
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2019 Elsevier Ltd.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.carbon.2019.03.075
Appears in Collections:INV - MCMA - Artículos de Revistas

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