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Photocatalytic degradation of sulfamethoxazole in aqueous solution using a floating TiO2-expanded perlite photocatalyst
- Długosz, Maciej, Żmudzki, Paweł, Kwiecień, Anna, Szczubiałka, Krzysztof, Krzek, Jan, Nowakowska, Maria
- Journal of hazardous materials 2015 v.298 pp. 146-153
- antibiotics, aqueous solutions, equations, models, pH, perlite, photocatalysis, photocatalysts, pollutants, sulfamethoxazole, water resources
- Photocatalytic degradation of an antibiotic, sulfamethoxazole (SMX), in aqueous solution using a novel floating TiO2-expanded perlite photocatalyst (EP-TiO2-773) and radiation from the near UV spectral range was studied. The process is important considering that SMX is known to be a widespread and highly persistent pollutant of water resources. SMX degradation was described using a pseudo-first-order kinetic equation according to the Langmuir–Hinshelwood model. The products of the SMX photocatalytic degradation were identified. The effect of pH on the kinetics and mechanism of SMX photocatalytic degradation was explained.