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Adsorption
Erschienen in: Adsorption 4/2015

01.05.2015

Activated carbon fibers for efficient VOC removal from diluted streams: the role of surface functionalities

verfasst von: Guillaume B. Baur, Oliver Beswick, Jonathan Spring, Igor Yuranov, Lioubov Kiwi-Minsker

Erschienen in: Adsorption | Ausgabe 4/2015

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Abstract

The effect of surface functionalities, specific surface area and pore size of activated carbon fibers (ACFs) on the adsorption of toluene and acetaldehyde, two volatile organic compounds (VOC), at low concentrations (~80 ppmv) and short contact time (20 ms) has been studied. Two different types of ACFs characterized by low temperature N2 adsorption: ultramicroporous (d pore  < 1 nm) and supermicroporous (d pore  ~ 1–2 nm) were tested. Both ACFs were effective for the removal of toluene attaining the adsorption capacity as large as 51 wt%. The surface chemistry of ACFs (O-containing functional groups) was characterized by temperature-programmed desorption monitoring the CO/CO2 evolved. Oxidative treatment of ACFs by nitric acid increased the surface concentration of O-groups. This resulted in lower adsorption capacity towards toluene but higher one towards acetaldehyde. This result was rationalized based on different type of VOC interactions with the carbon surface.
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Metadaten
Titel
Activated carbon fibers for efficient VOC removal from diluted streams: the role of surface functionalities
verfasst von
Guillaume B. Baur
Oliver Beswick
Jonathan Spring
Igor Yuranov
Lioubov Kiwi-Minsker
Publikationsdatum
01.05.2015
Verlag
Springer US
Erschienen in
Adsorption / Ausgabe 4/2015
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-015-9667-7

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