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|Title: ||The influence of the activated carbon post-treatment on the phenolic|
|Authors: ||Cansado, Isabel P. P.|
Mourão, Paulo A. M.
Falcão, Ana I.
Ribeiro Carrott, M . Manuela L.
Carrott, Peter J. M.
|Editors: ||Boehman, A.|
|Keywords: ||Activated carbon|
|Issue Date: ||2012|
|Citation: ||I.P.P. Cansado, et al., The influence of the activated carbon post-treatment on the phenolic compounds removal, Fuel
Process. Technol. (2011), doi:10.1016/j.fuproc.2011.10.015|
|Abstract: ||The aim of this research was to investigate how post treatment modification, such as those with sodium hydroxide
or urea, can influence the capacity of activated carbon (AC) for phenolic compounds removal from
liquid media. The ACs modification was performed using urea impregnation followed by pyrolysis at high
temperature. With all ACs used, this treatment induced a pore volume increase, a mean pore size broadening,
an increase in the point of zero charge and also in the basic character. The modification with sodium hydroxide
brings to light the influence of the precursor nature as the achievements are really diverse. With the ACs
obtained from PET, a pore volume and mean pore size reduction occurred, with the AC-cloth no textural
effect was observed and with the AC obtained from cork, an enlargement of the mean pore size and an increase
of the pore volume were confirmed. The difference in the acidic/basic character exhibited by the modified
ACs was in agreement with the presence of acidic/basic superficial groups identified by FTIR. The textural
and chemical properties of the ACs affect in a direct way the phenolic compounds removal capacity. Particularly,
those modified with urea, which exhibited a superior removal capacity for both phenolic compounds.|
|Appears in Collections:||QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
CQE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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