Electrodialysis, a promising approach for nutrients recovery from anaerobic liquid digestate: Status, challenges and perspectives DOI
Xiaofang Pan,

Yenan Li,

Yahui Huang

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107658 - 107658

Published: April 1, 2025

Language: Английский

Improving the shock resistance of anaerobic digestion under demand-oriented biogas production mode by using converter steel slag powder DOI
Yiyun Liu,

Rongqi Wu,

Jun Wu

et al.

Waste Management & Research The Journal for a Sustainable Circular Economy, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Introducing flexible biogas production (FB) can result in instantaneous high-shock loads for anaerobic digestion system, posing risks to the system’s stable operation. Steel slag, a typical metallurgical solid waste, has been demonstrated enhance buffering capacity of systems, thereby increasing methane and achieving ‘waste treatment using waste’. However, its efficacy under FB is uncertain. Pulse feeding experiments simulating were conducted analyse impact resistance with steel slag addition investigate enhancement mechanisms. The improved rate various shock conditions, particularly notable concentration shock. This scenario also saw significant increase generation soluble chemical oxygen demand utilization by microorganisms. be attributed enrichment hydrolytic bacterial phyla (Firmicutes) genera ( Gelria ), functional gene analysis revealing an genes associated Fe(III) reduction CO 2 -to-methane pathways. study results indicate that role as alkaline, iron-rich material enhances system alkalinity, reduces inhibition from H partial pressure boosts hydrogenotrophic methanogen activity, making it suitable exogenous enhancer demand-oriented digestion.

Language: Английский

Citations

1
Critical role of bicarbonate in Zero-Valent iron for hydrogen generation and biogas upgrading in anaerobic digestion DOI
Μαρία Ανδρονίκου,

Polina Christoforou,

Despina Constantinou

et al.

Bioresource Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132236 - 132236

Published: Feb. 1, 2025

Language: Английский

Citations

0
Review on Mechanisms of Iron Accelerants and Their Effects on Anaerobic Digestion DOI Creative Commons
Han Wang, Wanli Zhang, Wanli Xing

et al.

Agriculture, Journal Year: 2025, Volume and Issue: 15(7), P. 728 - 728

Published: March 28, 2025

Anaerobic digestion is an important technology for energy recovery from organic waste. However, methanogenesis restricted by some barriers, such as the low-speed bottleneck of interspecies electron transfer (IET), low hydrogen partial pressure limitation, trace element deficiency, etc., resulting in poor system stability and methane production. Recently, multiple iron accelerants have been employed to overcome above challenges proven effective enhancing methanogenesis. This study reviews effects (Fe0, Fe3O4 magnetite, Fe2O3 hematite, salts other accelerants) on anaerobic terms production, process microbial community elaborates mechanisms mediating direct (DIET) syntrophic methanogenic community, strong reducibility promoting methanogenesis, provision nutrient elements microorganisms, etc. The potential engineering application current research advances regarding environmental impacts are also summarized. Although exhibit positive digestion, most focuses laboratory small-scale investigations, its large-scale should be further verified. Future focus elucidating developing diverse methods different types systems, optimizing applications, exploring high-efficiency strategies accelerants.

Language: Английский

Citations

0
Electrodialysis, a promising approach for nutrients recovery from anaerobic liquid digestate: Status, challenges and perspectives DOI
Xiaofang Pan,

Yenan Li,

Yahui Huang

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107658 - 107658

Published: April 1, 2025

Language: Английский

Citations

0