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Enhancing Volatile Fatty Acid Production during Anaerobic Fermentation of Waste Activated Sludge with Persulfates: Peroxymonosulfate versus Peroxydisulfate
Fang, Wei; Zhang, Xuedong; Spanjers, Henri; Zhang, Tao
2021
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume9Issue:30Pages:10073-10082
Abstract

Persulfates ((peroxymonosulfate (PMS) and peroxydisulfate (PDS)) can disintegrate waste activated sludge (WAS), but their influence on volatile fatty acid (VFA) production during anaerobic fermentation is largely unclear. Particularly, it is unknown whether persulfates can improve fermentation without any preactivation. This study investigated how the direct addition of PMS and PDS into the fermenter influences VFA production from WAS, and uncovered possible mechanisms of improved VFA production. At the PMS dosage of 1.0 mM/gVS, maximum VFA yield (1025 +/- 55 mg COD/L) was observed in 5 days of fermentation, which was 24% higher than that with an equimolar addition of PDS and 132% higher than that without persulfate addition. However, the cost-effectiveness of PMS in enhancing VFA production is lower than that of PDS. The in situ generated hydroxyl and sulfate radicals from persulfates in the fermenter enhanced not only WAS disintegration and solubilization but also the formation of biodegradable substances for acidification. Moreover, the direct addition of persulfates into the fermenter shifted the microbial community toward hydrolysisacidification such as Clostridium_sensu_stricto_10 and Fonticella. Results of this study also suggest that preactivation is not necessary when persulfates are applied to improve WAS fermentation.

Department环境水质学国家重点实验室
KeywordWaste activated sludge (WAS) Anaerobic fermentation Volatile fatty acids Peroxymonosulfate (PMS) Peroxydisulfate (PDS)
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46955
Collection环境水质学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 10085, Peoples R China
2.Jiangnan Univ, Dept Environm Engn, Fac Environm & Civil Engn, Wuxi 214122, Jiangsu, Peoples R China
3.Delft Univ Technol, Dept Water Management, Sect Sanit Engn, NL-2600 GA Delft, Netherlands
Recommended Citation
GB/T 7714
Fang, Wei,Zhang, Xuedong,Spanjers, Henri,et al. Enhancing Volatile Fatty Acid Production during Anaerobic Fermentation of Waste Activated Sludge with Persulfates: Peroxymonosulfate versus Peroxydisulfate[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2021,9(30):10073-10082.
APA Fang, Wei,Zhang, Xuedong,Spanjers, Henri,&Zhang, Tao.(2021).Enhancing Volatile Fatty Acid Production during Anaerobic Fermentation of Waste Activated Sludge with Persulfates: Peroxymonosulfate versus Peroxydisulfate.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,9(30),10073-10082.
MLA Fang, Wei,et al."Enhancing Volatile Fatty Acid Production during Anaerobic Fermentation of Waste Activated Sludge with Persulfates: Peroxymonosulfate versus Peroxydisulfate".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 9.30(2021):10073-10082.
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