期刊
CLEAN-SOIL AIR WATER
卷 40, 期 7, 页码 698-705出版社
WILEY
DOI: 10.1002/clen.201100009
关键词
Adsorption; Activated carbon; Fluoxetine; Surface modification
类别
资金
- Fundacao para a Ciencia e Tecnologia (Portugal)
- COMPETE
- QREN e European Union (European Regional Development Fund, FEDER) [FCOMP-01-0124-FEDER-007142]
- Junta de Extremadura
The adsorption of fluoxetine onto activated carbons (ACs) prepared from almond tree pruning by steam and CO2 activation under different temperature conditions (650950 degrees C), was studied. In both series increasing the temperature caused an increase in the BET apparent surface area, yielding ACs with SBET up to 870 and 710?m2?g-1 after steam and CO2 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 degrees C showed maximum adsorption capacities between 110 and 224?mg?g-1. 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.
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