TY - GEN
T1 - Comparative Study of Veterinary Drug Degradation by UV and Photo-Fenton
T2 - 7th International Symposium on Water Resource and Environmental Management, WREM 2024
AU - Boudriche, Lilya
AU - Safaei, Zahra
AU - Sillanpää, Mika
AU - Boudjemaa, Amel
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
PY - 2025
Y1 - 2025
N2 - This study evaluated the efficacy and environmental impact of two advanced oxidation processes, UV-C/sodium persulfate (SPS) and photo-Fenton, for the degradation of sulfaquinoxaline, a veterinary antibiotic. With the UV/SPS process, a significant reduction in antibiotic concentration was observed after 5 h of irradiation, reaching an elimination rate of 90%. In contrast, the photo-Fenton (UV/SPS/Fe(II)) process achieved complete degradation and mineralization (100%) in just 1 h of irradiation. Both processes followed pseudo-first-order degradation kinetics. In addition to treatment performance, the toxic effect of degradation by-products was also analyzed through their impact on phytotoxicity and ecotoxicity. These tests were carried out, respectively, on Sinapis alba (a plant species) and Daphnia magna (a planktonic crustacean). The results showed that the by-products generated by the photo-Fenton process were more toxic, affecting shoot and root growth to a greater extent. A similar trend was observed for ecotoxicity, with a particularly high immobilization rate of D. magna after photo-Fenton treatment. This increase in toxicity is attributed to the appearance of more harmful by-products with the Fenton process, despite its proven performance.
AB - This study evaluated the efficacy and environmental impact of two advanced oxidation processes, UV-C/sodium persulfate (SPS) and photo-Fenton, for the degradation of sulfaquinoxaline, a veterinary antibiotic. With the UV/SPS process, a significant reduction in antibiotic concentration was observed after 5 h of irradiation, reaching an elimination rate of 90%. In contrast, the photo-Fenton (UV/SPS/Fe(II)) process achieved complete degradation and mineralization (100%) in just 1 h of irradiation. Both processes followed pseudo-first-order degradation kinetics. In addition to treatment performance, the toxic effect of degradation by-products was also analyzed through their impact on phytotoxicity and ecotoxicity. These tests were carried out, respectively, on Sinapis alba (a plant species) and Daphnia magna (a planktonic crustacean). The results showed that the by-products generated by the photo-Fenton process were more toxic, affecting shoot and root growth to a greater extent. A similar trend was observed for ecotoxicity, with a particularly high immobilization rate of D. magna after photo-Fenton treatment. This increase in toxicity is attributed to the appearance of more harmful by-products with the Fenton process, despite its proven performance.
KW - Environmental impact
KW - Photo-Fenton
KW - Sulfate radicals
KW - UV
KW - Veterinary drug
UR - https://www.scopus.com/pages/publications/105009208031
U2 - 10.1007/978-3-031-88850-2_2
DO - 10.1007/978-3-031-88850-2_2
M3 - Conference contribution
AN - SCOPUS:105009208031
SN - 9783031888496
T3 - Environmental Science and Engineering
SP - 19
EP - 26
BT - Proceedings of the 7th International Symposium on Water Resource and Environmental Management
A2 - Xu, Haoqing
PB - Springer Science and Business Media Deutschland GmbH
Y2 - 5 December 2024 through 6 December 2024
ER -