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Study of the Contributions of Non-Specific and Specific Interactions during Fluoxetine Adsorption onto Activated Carbons.

Authors :
Román, Silvia
Nabais, João Manuel Valente
González, Juan Félix
González-García, Carmen María
Ortiz, Angel Luis
Source :
CLEAN: Soil, Air, Water; Jul2012, Vol. 40 Issue 7, p698-705, 8p
Publication Year :
2012

Abstract

The adsorption of fluoxetine onto activated carbons (ACs) prepared from almond tree pruning by steam and CO<subscript>2</subscript> activation under different temperature conditions (650-950°C), was studied. In both series increasing the temperature caused an increase in the BET apparent surface area, yielding ACs with S<subscript>BET</subscript> up to 870 and 710 m<superscript>2</superscript> g<superscript>−1</superscript> after steam and CO<subscript>2</subscript> activation, respectively. Also, a slight widening of the porosity was found in both cases. In order to modify the functionality of the ACs, two of them were impregnated with triethylenediamine (TEDA) prior to the adsorption process, which caused a decrease in the AC apparent surface mainly due to micropore blockage. The fluoxetine adsorption isotherms at 25°C showed maximum adsorption capacities between 110 and 224 mg g<superscript>−1</superscript>. The adsorption isotherms were analyzed using Langmuir and Freundlich models. Although the impregnation reduced the pore volume, it did not cause a decrease in the fluoxetine maximum adsorption capacity, but a modification in the adsorption mechanism was observed. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
18630650
Volume :
40
Issue :
7
Database :
Complementary Index
Journal :
CLEAN: Soil, Air, Water
Publication Type :
Academic Journal
Accession number :
77727616
Full Text :
https://doi.org/10.1002/clen.201100009