Photocatalytic Removal of the Antibiotic Furazolidone Using g-C3N4 in the Presence of Persulfates Under Lab and Pilot Scale Conditions

Water, Journal Year: 2025, Volume and Issue: 17(4), P. 602 - 602

Published: Feb. 19, 2025

Furazolidone, a nitrofuran antibiotic, has been broadly used in aquaculture and veterinary medicine, its presence water poses considerable environmental health hazards due to toxicity. This study investigated hybrid photocatalytic process for the removal of furazolidone, employing graphitic carbon nitride (g-C3N4) persulfate anions (PS) under both laboratory pilot-scale conditions. The synergistic effect g-C3N4 PS enhanced generation reactive species, facilitating efficient degradation FZ two different aqueous matrices. Through scavenging studies, positive holes were determined be dominant followed by sulfate radicals. Seven transformation products tentatively identified via UHPLC-LTQ/Orbitrap MS analysis. optimized system (g-C3N4/PS) achieved 100% furazolidone less than 60 min simulated solar light, demonstrating potential large-scale application wastewater remediation. Furthermore, experiments using real secondary treated municipal proved that applied is capable achieving an 86.2% (k = 0.017 min−1) as well 90% decrease effluent ecotoxicity within 120 UVA irradiation. provides insights into sustainable processes antibiotic contaminants from underscores role g-C3N4-based approaches upper-scale applications.

Language: Английский

Magnetic Coal Gasification Slag/Graphite Phase Carbon Nitride Composites for Photocatalytic Degradation of Tetracycline

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 770 - 770

Published: March 7, 2025

Graphite-phase carbon nitride (CN) has the advantages of high stability, non-toxicity, and harmlessness in degrading antibiotic pollutants water. How to achieve reduction its electron-hole complexation efficiency as well improvement recyclability, while at same time ensuring these advantages, is focus this paper. In study, modified magnetic particles selected from coal gasification slag were used carriers, which compounded with CN then subjected a simple roasting process obtain composite photocatalysts (MCN) different ratios. The introduction porous carriers increased specific surface area MCN, provided more active sites, effectively improved migration ability redox capacity carriers. Among them, 50% MCN showed excellent photodegradation performance, removal rate tetracycline reached 82% within 60 min, was much higher than that CN. saturated magnetisation intensity 1.55 emu·g−1, can be regenerated after recycling using field, degradation still 70% five cycles, indicating good stability. This work demonstrates carrier promote separation photogenerated pairs graphite-phase nitride, provides reference for resourceful utilisation slag, construction g-C3N4-based highly efficient stable activity. exemplifies how waste-derived materials advance photocatalyst design, addressing both sustainability challenges water treatment.

Language: Английский