On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media

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Journal Title, Volume, Page: 
Separation Science and Technology, Volume 39, Issue 1 , pages 43 - 62
Year of Publication: 
Hassan A. Arafat
Chemical Technology Division, Argonne National Laboratory, Argonne, Illinois, USA
Current Affiliation: 
Department of Chemical Engineering, Faculty of Engineering and Information Technology, An-Najah National University, Nablus, Palestine
Falk Ahnert
Delft University of Technology, Delft, The Netherlands
Neville G. Pinto
Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio, USA
Preferred Abstract (Original): 

In a previous study, H-bonding was postulated as a mechanism of adsorption for aromatics on oxygen-containing activated carbon. To verify this, the adsorption of phenol, aniline, benzene, and nitrobenzene was studied as a function of surface oxygen groups. It was determined that there is a linear correlation between total surface acidity and adsorption capacity for H-bonding adsorbates in cyclohexane. Flow microcalorimetry (FMC) and ultrasonic desorption tests also indicate stronger and less reversible adsorption bonds for H-bonding adsorbates. Reversibility