Iron doped fibrous-structured silica nanospheres as efficient catalyst for catalytic ozonation of sulfamethazine
Sulfonamide antibiotics are ubiquitous pollutants in aquatic environments due to their large production and extensive application. In this paper, the iron doped fibrous-structured silica (KCC-1) nanospheres (Fe-KCC-1) was prepared, characterized, and applied as a catalyst for catalytic ozonation of sulfamethazine (SMT). The effects of ozone dosage, catalyst dosage, and initial concentration of SMT were examined. The experimental results showed that Fe-KCC-1 had large surface area (464.56 m2 g−1) and iron particles were well dispersed on the catalyst. The catalyst had high catalytic performance especially for the mineralization of SMT, with mineralization ratio of about 40% in a wide pH range. With addition of Fe-KCC-1, the ozone utilization increased nearly two times than single ozonation. The enhancement of SMT degradation was mainly due to the surface reaction, and the increased mineralization of SMT was due to radical mechanism. Fe-KCC-1 was an efficient catalyst for SMT degradation in catalytic ozonation system.
KeywordsCatalytic ozonation Sulfamethazine PPCPs Catalyst AOPs
- Afzal S, Quan X, Chen S, Wang J, Muhammad D (2016) Synthesis of manganese incorporated hierarchical mesoporous silica nanosphere with fibrous morphology by facile one-pot approach for efficient catalytic ozonation. J Hazard Mater 318:308–318. https://doi.org/10.1016/j.jhazmat.2016.07.015 CrossRefGoogle Scholar
- Díaz-Cruz MS, García-Galán MJ, Barceló D (2008) Highly sensitive simultaneous determination of sulfonamide antibiotics and one metabolite in environmental waters by liquid chromatography–quadrupole linear ion trap–mass spectrometry. J Chromatogr A 1193(1-2):50–59. https://doi.org/10.1016/j.chroma.2008.03.029 CrossRefGoogle Scholar
- Gary L, Schmitt DJP (1985) Liquid chromatographic separation of inorganic anions on an alumina column. Anal Chem (12):2247–2253Google Scholar
- Huang RH, Yan H, Li L, Deng D, Shu Y, Zhang Q (2011) Catalytic activity of Fe/SBA-15 for ozonation of dimethyl phthalate in aqueous solution. Appl Catal B Environ 106:264–271Google Scholar
- Ren YM, Dong Q, Feng J, Ma J, Wen Q, Zhang ML (2012) Magnetic porous ferrospinel NiFe2O4: a novel ozonation catalyst with strong catalytic property for degradation of di-n-butyl phthalate and convenient separation from water. J Colloid Interf Sci 382(1):90–96. https://doi.org/10.1016/j.jcis.2012.05.053 CrossRefGoogle Scholar