Catalytic degradation of amoxicillin from water by a combined system of ultrasound/H2O2/KI

• Published in: Environmental technology 2024, Vol.45 (4), p.695-704
• Main Authors: Zhang, Yan, Gao, Wenning, Li, Dongmin, Peng, Yingying, Yuan, Honglei, Sun, Xianke
• Format: Article
• Language: English
• Subjects: Amoxicillin; Antibiotics; Catalytic degradation; Degradation; Efficiency; Hydrogen peroxide; KI system; Ultrasonic imaging; Ultrasound; Wastewater treatment; water treatment
• ISSN: 0959-3330; 1479-487X
• DOI: 10.1080/09593330.2022.2120830

A new combined system of ultrasound (US)/ H 2 O 2 /KI was presented in this study for the degradation of amoxicillin (AMX). Various parameters that influencing the degradation efficiency, such as ultrasonic power, pH value of the solution, concentrations of H 2 O 2 and KI, initial concentration of AMX were investigated. The maximum degradation efficiency of 84.1% in 60 min was obtained under the optimal conditions when the ultrasonic power was 195 W, the solution pH was 3.2, the concentrations of H 2 O 2 and KI were 120 and 2.4 mmol/L, respectively. Results also showed US/H 2 O 2 /KI system possessed better degradation efficiency compared with that by using the systems of US alone, H 2 O 2 , US/H 2 O 2 , US/KI and H 2 O 2 /KI. The degradation reaction of AMX should be a very complex process, and the corresponding degradation pathways may change at different concentrations or under different reaction conditions. The results indicate that the combined system of US/ H 2 O 2 /KI has great potential applications for the treatment of wastewater containing antibiotics with high concentrations.