Enhanced methane production from waste activated sludge by potassium ferrate combined with thermal hydrolysis pretreatment

被引：2

作者：

Guo B. ^{[1
]}

Zeng J. ^{[3
]}

Hao Y. ^{[3
]}

Hu J. ^{[1
]}

Li Z. ^{[1
]}

机构：

[1] Engineering, Tongji University, 1239 Siping Road, Shanghai

[2] CCCC National Engineering Research Center of Dredging Technology and Equipment Co., Ltd., Shanghai

来源：

Environmental Science and Pollution Research | 2024年 / 31卷 / 33期

基金：

中国国家自然科学基金;

关键词：

Anaerobic digestion; Civil sludge; Co-pretreatment; Methane yield; Potassium ferrate; Thermal hydrolysis;

D O I：

10.1007/s11356-024-34281-y

中图分类号：

学科分类号：

摘要：

Anaerobic digestion of waste activated sludge (WAS) was one of the directions of sludge treatment, but how to effectively improve the production of methane as a resource product of anaerobic digestion of sludge still needs further research. The study examined how the combination of potassium ferrate (PF) and thermal hydrolysis (TH) pretreatment affected methane production from sludge. The results demonstrated a positive synergistic effect on methane production with PF-TH pretreatment. Specifically, by employing a 0.05 g/g TSS (total suspended solids) PF in conjunction with TH at 80 °C for 30 min, the methane yield increased from 170.66 ± 0.92 to 232.73 ± 2.21 mL/g VSS (volatile suspended solids). The co-pretreatment of PF and TH has been substantiated by mechanism studies to effectively enhance the disintegration and biodegradability of sludge. Additionally, the variation of microbial community revealed an enrichment of active microorganisms associated with anaerobic digestion after treated with PF + TH, resulting in a total abundance increase from 11.87 to 20.45% in the PF + TH group. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

页码：45862 / 45874

页数：12

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