| Title: | Revealing the mechanisms for potassium ferrate affecting methane production from anaerobic digestion of waste activated sludge |
| Author(s): | Hu J; Guo B; Li Z; Eshtiaghi N; Tao W; |
| Address: | "State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science & Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; UN Environment-Tongji Institute of Environment for Sustainable Development, Siping Road, Shanghai 200092, China. State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science & Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science & Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. Electronic address: zhuoli2013@tongji.edu.cn. Chemical and Environmental Engineering, School of Engineering, RMIT University, Victoria 3001, Australia" |
| DOI: | 10.1016/j.biortech.2020.124022 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "This study investigated the issue of potassium ferrate (PF) affecting anaerobic methane generation from sludge by a set of experimental and model analyses. Experimental results indicated that the methane production was significantly promoted from 164.7 to 204.1 mL/g VSS (volatile suspended solids) with PF dosage enhanced from 0 to 0.05 g/g TSS (total suspended solids). Further enhancement of PF dosage reduced methane production, which even decreased to 135.4 mL/g VSS when PF dosage increased to 0.1 g/g TSS. Model-based analysis showed that except for methane production potential, the methane production rate was also promoted by PF treatment, which was sufficiently enhanced from 8.80 to 11.88 mL/g VSS/d when PF dosage was 0.05 g/g TSS. Mechanism studies indicated that PF not only promoted sludge disintegration, but also enhanced the proportion of biodegradable organics in sludge liquor, and the digestion potential of the non-biodegradable humus and lignocellulose were promoted" |
| Keywords: | "Anaerobiosis Bioreactors Iron Compounds Methane Potassium Compounds *Sewage *Waste Disposal, Fluid Anaerobic digestion Methane production Potassium ferrate Waste activated sludge;" |
| Notes: | "MedlineHu, Jiawei Guo, Bing Li, Zhuo Eshtiaghi, Nicky Tao, Wenquan eng England 2020/08/24 Bioresour Technol. 2020 Dec; 317:124022. doi: 10.1016/j.biortech.2020.124022. Epub 2020 Aug 15" |
