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6945325 
Journal Article 
Effect of thin hydrophobic films for toluene adsorption and desorption behavior on activated carbon fiber under dry and humid conditions 
Kim, KDae; Park, EunJi; Seo, HOok; Jeong, MG; Kim, YDok; Lim, DC; , 
2012 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
ELSEVIER SCIENCE SA 
LAUSANNE 
133-139 
WOS:000309615800016 
The toluene adsorption and desorption behavior of bare activated carbon fibers (ACFs) and those with a thin hydrophobic coating were studied. ACF surfaces were made hydrophobic by evaporating polydimethylsiloxane (PDMS) on AFCs under atmospheric pressure condition. In the breakthrough curve of bare-ACF for toluene under humid air condition, the roll-up phenomenon towards toluene adsorption was observed. This was attributed to the substitution of the adsorbed toluene by water on ACF, leading to a rise of outlet concentration above the inlet concentration with a decrease in the amount of adsorbed toluene. Compared to bare-ACF, a superior selectivity and adsorption capacity for toluene was observed on the ACFs coated with PDMS. It is suggested that the PDMS-coating can increase the removal efficiency of ACF for toluene under humid air condition. (C) 2012 Elsevier B.V. All rights reserved.