Adsorption of SO2 onto waste cork powder-derived activated carbons

► Activated carbon was successfully prepared from waste cork powder. ► Chemical and physical activation successfully developed carbon porosity and surface acidity. ► Chemically activated carbon presented the highest SO2 adsorption capacity. ► SO2 adsorption strength increased in more basic carbon su...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2012-11, Vol.211-212, p.60-67
Main Authors: Atanes, E., Nieto-Márquez, A., Cambra, A., Ruiz-Pérez, M.C., Fernández-Martínez, F.
Format: Article
Language:English
Subjects:
acidity
Activated carbon
adsorbents
adsorption
chemical engineering
Cork
desorption
Porosity
SO2 adsorption
sorption isotherms
spectroscopy
Surface acidity
surface area
thermogravimetry
titration
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Summary:► Activated carbon was successfully prepared from waste cork powder. ► Chemical and physical activation successfully developed carbon porosity and surface acidity. ► Chemically activated carbon presented the highest SO2 adsorption capacity. ► SO2 adsorption strength increased in more basic carbon surfaces. Three activated carbon samples have been prepared by thermal (ACchar), physical (with CO2, ACCO2) and chemical (with KOH, ACKOH) activation of waste cork powder. Cork was characterized by thermogravimetric, elemental and proximate analyses, and activated carbons were characterized by elemental and proximate analyses, adsorption–desorption of N2, acid/base and Boehm’s titration and FTIR (ATR) spectroscopy. A commercial activated carbon sample (ACcom) was subjected to the same characterization program for comparison purposes. Activation of cork conducted to an increase in BET surface area and pore volume in the sequence: ACchar
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2012.09.043