Low-alkaline fermentation for efficient short-chain fatty acids production from waste activated sludge by enhancing endogenous free ammonia

• Published in: Journal of cleaner production Vol. 275; p. 122921
• Main Authors: Ye, Min, Ye, Jiongjiong, Luo, Jinghuan, Zhang, Sitong, Li, Yu-You, Liu, Jianyong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2020
• Subjects: activated sludge; ammonia; carbon; Carbon source; chemical oxygen demand; denitrification; Endogenous free ammonia; fermentation; hydrolysis; Low-alkaline fermentation; nutrients; Short-chain fatty acids; total suspended solids; Waste activated sludge; wastewater treatment; Short-chain fatty acids; Endogenous free ammonia; Waste activated sludge; Carbon source; Low-alkaline fermentation

Alkaline fermentation at pH 10 is an effective method of producing short-chain fatty acids from waste activated sludge, but requires high cost of alkali. In this study, low-alkaline fermentation at pH 9 with enhanced endogenous free ammonia was proposed to improve sludge hydrolysis and short-chain f...