Adsorption and desorption of m-xylene from supercritical carbon dioxide on activated carbon

Journal
Separation science and technology  
Volume
36
Issue
10
Start Page
2197
End Page
2211
Citation
Separation Science and Technology 36 (10): 2197-2211 (2001)
Publisher DOI
10.1081/SS-100105913
Scopus ID
2-s2.0-0034809758
Publisher
Taylor & Francis
The equilibrium loadings of m-xylene from supercritical carbon dioxide on activated carbon are reported. The experimental data were obtained by measuring the outlet concentration of m-xylene eluted from a column packed with activated carbon until the effluent reached the input concentration. The Freundlich isotherm expression was found to correlate the experimental data satisfactorily. In a second step, the regeneration by supercritical carbon dioxide of activated carbon loaded with m-xylene was investigated. The experimental data demonstrated that the adsorptive capacities of the regenerated activated carbon for m-xylene after many cycles were close to those of the virgin carbon and remained stable. The effects of temperature, pressure, and flow rate on regeneration efficiency were also studied.
DDC Class
540: Chemie
600: Technik