Degradation Efficiency Analysis of Sulfadiazine in Water by Ozone/Persulfate Advanced Oxidation Process

Antibiotics are a new class of organic compounds that have antibacterial and anti-inflammatory effects in the clinic, but their widespread use has serious adverse on natural water environment. Sulfadiazine (SDZ) is typical kind antibiotic, treatment effect traditional biochemical degradation process not been ideal. Thus, order to find more efficient clean method, we investigated ozone/persulfate (O3/PMS) advanced oxidation (AOPs) SDZ prepared for first time compared it with experimental results ozone (O3) ozone/ultraviolet (O3/UV) methods. The showed when initial mass concentration O3 was 3 mg/L, 10 temperature 25 °C, pH 6.8 ± 0.1, Kobs O3/PMS 0.2497 min−1, values O3/UV were 0.1242 0.1328 respectively. required degrade below detection limit (0.01 mg/L) about 7 min shorter than O3/UV. It found O3/PMS, increase inhibited its degradation, increased rate sulfadiazine. conformed pseudo-first-order reaction kinetic equation. suitable weak alkaline environments. When 9, free radicals highest. Excessive alkalinity led mutual quenching reduced rate. mineralization slightly worse process, effectively degraded fluorescent substances dissolved water, good prospects practical engineering applications.