XU Bin-kun,YU Yun,PAN Zhi-gang,et al.Degradation of Benzophenone-3 by UV-activated Persulfate Process[J].China Water & Wastewater,2020,36(23 23):69-74.
Degradation of Benzophenone-3 by UV-activated Persulfate Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
23 23
Page:
69-74
Column:
Date of publication:
2020-12-01
- Keywords:
- UV/PS; organic sunscreen; benzophenone-3; kinetics; risk assessment
- Abstract:
- Typical organic sunscreen benzophenone-3 (BP-3) in water was degraded by UV-activated persulfate advanced oxidation process, and effects of various factors on removal of BP-3 were investigated and evaluated. The results showed that UV/PS could effectively remove BP-3.The removal efficiency of BP-3 decreased with the increase of BP-3 initial concentration, while it increased with the increase of PS dosage. BP-3 removal efficiency was higher in acidic condition than that in alkaline condition. The presence of Cl-, NO3-, HCO3- and SO42-in aqueous solution had inhibitory effects on BP-3 degradation. Among them, the inhibitory effect of HCO3- was the most obvious. Seven intermediates were identified by HPLC-MS/MS, and the degradation pathway was proposed. Biological toxicity experiment showed that the BP-3 toxicity was not completely removed during degradation of BP-3 by UV/PS process, which indicated that it still had a potential threat to the ecological environment.
Last Update:
2020-12-01