Persulfate-based strategy for promoted acesulfame removal during sludge anaerobic fermentation: Combined chemical and biological effects
- Resource Type
- Authors
- Qin, Zhang; Shiyu, Fang; Xiaoshi, Cheng; Feng, Wang; Le, Zhang; Wenxuan, Huang; Wei, Du; Fang, Fang; Jiashun, Cao; Jingyang, Luo
- Source
- Journal of Hazardous Materials. 434:128922
- Subject
- Environmental Engineering
Sewage
Sweetening Agents
Health, Toxicology and Mutagenesis
Fermentation
Thiazines
Environmental Chemistry
Anaerobiosis
Oxidation-Reduction
Pollution
Waste Management and Disposal
Water Pollutants, Chemical
- Language
- ISSN
- 0304-3894
The acesulfame (ACE) degradation in waste activated sludge (WAS) via direct anaerobic fermentation is difficult and the efficient elimination techniques are imperative for the ultimate safe WAS disposal. Persulfate (PS)-based approach was developed to promote the ACE removal during WAS anaerobic fermentation. Results demonstrated the effectiveness of PS-based treatments on ACE degradation, and the ACE removal efficiency was respectively 48.2% and 96.2% in the PS and PS/Fe-treated reactors while it was only 6.0% in the control reactor. Mechanism explorations revealed that the active free radicals (i.e. OH• and SO