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Received October 28, 2008
Accepted June 23, 2009
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Removal of the antibiotic tetracycline by Fe-impregnated SBA-15
School of Chemical Engineering and Bioengineering, University of Ulsan, Daehakro 102, Nam-gu, Ulsan 680-749, Korea 1Taewha Environment Co. Ltd., 34-1 Seonam-dong, Nam-gu, Ulsan, Korea
ewshin@mail.ulsan.ac.kr
Korean Journal of Chemical Engineering, January 2010, 27(1), 116-120(5), 10.1007/s11814-009-0313-5
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Abstract
We prepared Fe-impregnated mesoporous silicates to investigate the adsorption of tetracycline in aqueous solution. Mesoporous silicates with different Fe content (5, 10, 30, 50 wt%) were prepared by an incipient wetness method. Adsorption kinetics for tetracycline showed that Fe-impregnation improved the adsorption ability for tetracycline. By fitting the adsorption kinetic data to a pseudo second-order model, we obtained a maximum adsorption amount of tetracycline with Fe30SBA-15 (30 wt% Fe-impregnated mesoporous silicates) at 41.7 mg/g. The pH dependency of tetracycline adsorption exhibited a volcano curve where the maximum adsorption onto the Fe30SBA-15 sample occurred in the neutral pH region. The introduction of Fe species into the SBA-15 revived the adsorption ability for tetracycline, whereas there was no interaction between tetracycline and SBA-15, a mesoporous silicate. These results suggest that_x000D_
impregnated Fe species produce an effective interaction with tetracycline in an aqueous system.
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Li D, Zheng Y, Wang XY, Appl. Catal. A: Gen., 340(1), 33 (2008)
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Oka H, Ikai Y, Kawamura N, Yamada M, Harada K, Ito S, Suzuki M, J. Agric. Food Chem., 37, 226 (1989)
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