Figure 1. Decomposition of SMX by CWPO at 1 atm and 40 ℃.
Figure 2. Decomposition of SMX with change of H2O2 concentration at 1 atm, 20 ℃ and 2 g 10 wt% Cu/Al2O3 .
Figure 3. Decomposition of SMX with change of 10 wt% Cu/Al2O3 catalyst loading amount at 1 atm, 20 ℃ and 0.197 mM H2O2.
Figure 4. Decomposition of SMX with change of temperature at 1 atm, 2 g 10 wt% Cu/Al2O3 and 0.197 mM H2O2.
Figure 5. Effects of 10 wt% Cu/Al2O3 catalysts and H2O2 concentration on CWPO of SMX at 20 ℃; (a) 0.197 mM H2O2, (b) 0.395 mM H2O2, (c) 0.790 mM H2O2.
Figure 6. Effects of temperature and H2O2 concentration on CWPO of SMX at 2 g 10 wt% Cu/Al2O3; (a) 20 ℃, (b) 40 ℃, (c) 80 ℃.
Figure 7. Effects of 10 wt% Cu/Al2O3 catalysts loading amount and temperature on CWPO of SMX at 0.197 mM H2O2; (a) 2 g 10 wt% Cu/Al2O3, (b) 4 g 10 wt% Cu/Al2O3, (c) 6 g 10 wt% Cu/Al2O3.
Figure 8. Effects of pH on CWPO of SMX at 1 atm, 40 ℃, 6 g 10 wt% Cu/Al2O3 and 0.790 mM H2O2.
Figure 9. Decomposition of SMX by CWPO with continuously recycling catalysts at 1 atm, 40 ℃, 6 g 10 wt% Cu/Al2O3 and 0.790 mM H2O2.
Figure 10. SEM micrographs of 10 wt% Cu/Al2O3 catalyst; (a) fresh catalyst (b) 5 times used catalyst.
Figure 11. The change of decomposition intermediates of SMX by CWPO at 1 atm, 40 ℃, 6 g 10 wt% Cu/Al2O3 and 0.790 mM H2O2.
Figure 12. Reaction pathways of SMX by CWPO.
Table 1. BET analysis of fresh and 5 times used 10 wt% Cu/Al2O3 catalysts
Table 2. Identified intermediates of sulfamethoxazole
참고문헌
- Seo, H. J., Park, Y. H., Kang, I. S., Myoun, H. B., Song, Y. S., and Kang, Y. J., "Evaluation on the Removal Efficiency of Pharmaceutical Compounds in Conventional Drinking Water Treatment Process," Anal. Sci. Technol., 29(3), 126-135 (2016). https://doi.org/10.5806/AST.2016.29.3.126
- Kim, S. D., Cho, J., Kim, I. S., Vanderford, B. J., and Snyder, S. A., "Occurrence and Removal of Pharmaceuticals and Endocrine Disruptors in South Korean Surface, Drinking, and Waste Waters," Water Res., 41, 1013-1021 (2007).
- Ternes, T. A., "Occurrence of Drugs in German Sewage Treatment Plants and Rivers," Water Res., 32, 3245-3260 (1998). https://doi.org/10.1016/S0043-1354(98)00099-2
- Alexy, R., Kumpel, T., and Kummerer, K., "Assessment of Degradation of 18 Antibiotics in the Closed Bottle Test," Chemosphere, 57, 505-512 (2004).
-
Zhang, H., Wang, Z., Li, R., Guo, J., Li, Y., Zhu, J., and Xie, X., "
$TiO_2$ Supported on Reed Straw Biochar as an Adsorptive and Photocatalytic Composite for the Efficient Degradation of Sulfamethoxazole in Aqueous Matices," Chemoshpere, 185, 351-360 (2017). https://doi.org/10.1016/j.chemosphere.2017.07.025 - Rojas, D. I., Acevedo, A. L., and Munoz F., "Study of Continuous Ozonation Using a Venture System of an Effluent Contaminated with Pharmaceuticals: Ibuprofen, Sodium Diclofenac and Sulfamethoxazole," J. Adv. Oxid. Technol., 18, 233-238 (2015).
-
Lester, Y., Avisar, D., and Mamane, H., "Photodegradation of the Antibiotic Sulphamethoxazole in Water with UV/
$H_2O_2$ ," Environ. Technol., 31, 175-183 (2010). https://doi.org/10.1080/09593330903414238 - Trovo, A. G., Nogueira, R. F. P., Aguera, A., Fernandez-Alba, A. R., Sirtori, C., and Malato, S., "Degradation of Sulfamethoxazole in water by solar photo-Fenton, Chemical and Toxicological Evaluation," Water Res., 43, 3922-3931 (2009). https://doi.org/10.1016/j.watres.2009.04.006
- Lee D.-K., Kim D.-S., and Kim S.-C., "Catalytic Wet Oxidation of Reactive Dyes in Water," Stud. Surf. Sci. Catal., 133, 297 (2001).
- Kim, H. Y., Kim, T.-H., Cha, S. M., and Yu, S., "Degradation of Sulfamethoxazole by Ionizing Radiation: Identification and Characterization of Radiolytic Products," Chem. Eng. J., 313, 556-566 (2017).