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Effect of Oxyfluorination of Activated Carbon on the Adsorption of Tetracycline from Aqueous Solutions.
- Source :
- Korean Journal of Chemical Engineering; Jul2024, Vol. 41 Issue 7, p2069-2077, 9p
- Publication Year :
- 2024
-
Abstract
- Oxyfluorination treatment was used to enhance the capacity for adsorption of tetracycline (TC) from aqueous systems by activated carbon (AC). The AC was oxyfluorinated at room temperature for 5 min in a batch reactor, and the ratio of O<subscript>2</subscript> and F<subscript>2</subscript> gas was used as a variable. The oxyfluorination treatment increased the oxygen functional group content on the AC by up to 19.4%. The specific surface area of the oxyfluorinated AC was decreased by up to 31.7% and the micropore volume was decreased by up to 30.6% due to strong etching by fluorine radicals. AC-O7F3 with a 19.4 at% oxygen group content showed the best TC adsorption performance because the increased number of oxygen functional groups enabled hydrogen bonding. However, the AC-O5F5 sample treated with a high fluorine partial pressure showed poor TC adsorption, which was attributed to the collapse of the pore structure and a decrease in the specific surface area due to perfluorination. Meanwhile, the TC adsorption process showed pseudo second-order kinetics and a good fit with the Langmuir model. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02561115
- Volume :
- 41
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Korean Journal of Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 178086637
- Full Text :
- https://doi.org/10.1007/s11814-024-00139-9