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Bioresour Technol

Title:		Enhanced methane production from waste activated sludge by potassium ferrate combined with ultrasound pretreatment
Author(s):		Guo B; Hu J; Zhang J; Wu Z; Li Z;
Address:		"State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science & Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China. School of Mechanical Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, PR China. State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science & Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China. Electronic address: zhuoli2013@tongji.edu.cn"
Journal Title:		Bioresour Technol
Year:		2021
Volume:		20210825
Issue:
Page Number:		125841 -
DOI:		10.1016/j.biortech.2021.125841
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"This study explored the effect of potassium ferrate (PF) combined with ultrasound (US) pretreatment on methane generation from sludge by a series of experiments and simulations. Batch experiments showed that the pretreatment of PF coupled with US exhibited positively synergy on the methane yield. And by the pretreatment of 0.05 g/g TSS (total suspended solids) PF cooperated with US (1 W/mL, 25 kHz, 15 min), the methane yield was enhanced from 180.62 +/- 3.26 to 228.83 +/- 4.76 mL/g VSS (volatile suspended solids). Mechanism studies confirmed that the co-pretreatment of PF and US efficiently promoted sludge disintegration, and the biodegradability of sludge organics was obviously enhanced. Microbial community analysis showed that the functional microorganisms participating in sludge anaerobic digestion were enriched by PF cooperated with US pretreatment, with the total abundance enhanced from 12.96% in the control to 17.96% in PF + US pretreated reactor"
Keywords:		"Anaerobiosis Bioreactors Iron Compounds Methane Potassium Compounds *Sewage *Waste Disposal, Fluid Anaerobic digestion Potassium ferrate Ultrasound pretreatment Wasted activated sludge;"
Notes:		"MedlineGuo, Bing Hu, Jiawei Zhang, Jingsi Wu, Zhigen Li, Zhuo eng England 2021/09/16 Bioresour Technol. 2021 Dec; 341:125841. doi: 10.1016/j.biortech.2021.125841. Epub 2021 Aug 25"