Synergistic Promotion of Direct Interspecies Electron Transfer by Biochar and Fe₃O₄ Nanoparticles to Enhance Methanogenesis in Anaerobic Digestion of Vegetable Waste DOI Creative Commons

Hongruo Ma,

Long Chen, Wei Guo

et al.

Fermentation, Journal Year: 2024, Volume and Issue: 10(12), P. 656 - 656

Published: Dec. 18, 2024

When vegetable waste (VW) is used as a sole substrate for anaerobic digestion (AD), the rapid accumulation of volatile fatty acids (VFAs) can impede interspecies electron transfer (IET), resulting in relatively low biogas production rate. In this study, Chinese cabbage and were selected VW substrates, four continuous stirred tank reactors (CSTRs) employed. Different concentrations biochar-loaded nano-Fe3O4(Fe3O4@BC) (100 mg/L, 200 300 mg/L) added, organic loading rate (OLR) was gradually increased during AD process. The changes rate, VFAs, microbial community structure fermentation tanks analyzed to identify optimal dosage Fe3O4@BC maximum OLR. results indicated that at OLR 3.715 g (VS)/L·d, addition mg/L most effectively promoted an increase reduced VFAs compared other treatments. Under these conditions, reached 0.658 L/g (VS). Furthermore, enhanced both diversity abundance bacteria archaea. At genus level, Christensenellaceae_R-7_group, Sphaerochaeta, archaeal Thermovirga notably increased.

Language: Английский

Mechanisms of Biochar-Mediated Reduction of Antibiotic-Resistant Bacteria and Biogas Production Enhancement in Anaerobic Digesters DOI

Jingyi You,

Mohamed Farghali, Ahmed I. Osman

et al.

Biochemical Engineering Journal, Journal Year: 2024, Volume and Issue: 211, P. 109465 - 109465

Published: Aug. 13, 2024

Language: Английский

Citations

6
Metagenomic analysis reveals the mechanisms of biochar supported nano zero-valent iron in two-phase anaerobic digestion of food waste: microbial community, CAZmey, functional genes and antibiotic resistance genes DOI
Miao Yu,

Hailin Shao,

Pan Wang

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 366, P. 121763 - 121763

Published: July 6, 2024

Language: Английский

Citations

5
The triple action of pinewood biochar-based materials to improve biogas yields: pH regulation, DIET, and colonization DOI
Jing Ning, Mohammadreza Kamali, Sam Crauwels

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 125185 - 125185

Published: April 1, 2025

Language: Английский

Citations

0
Strengthening the syntrophic pathway for acetate oxidation-hydrogenotrophic methanogenesis by biogas stirring for effectively mitigating acidification in anaerobic digestion DOI
Yi Han, Si Yang, Gang Guo

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157834 - 157834

Published: Nov. 1, 2024

Language: Английский

Citations

2
Synergistic Promotion of Direct Interspecies Electron Transfer by Biochar and Fe₃O₄ Nanoparticles to Enhance Methanogenesis in Anaerobic Digestion of Vegetable Waste DOI Creative Commons

Hongruo Ma,

Long Chen, Wei Guo

et al.

Fermentation, Journal Year: 2024, Volume and Issue: 10(12), P. 656 - 656

Published: Dec. 18, 2024

When vegetable waste (VW) is used as a sole substrate for anaerobic digestion (AD), the rapid accumulation of volatile fatty acids (VFAs) can impede interspecies electron transfer (IET), resulting in relatively low biogas production rate. In this study, Chinese cabbage and were selected VW substrates, four continuous stirred tank reactors (CSTRs) employed. Different concentrations biochar-loaded nano-Fe3O4(Fe3O4@BC) (100 mg/L, 200 300 mg/L) added, organic loading rate (OLR) was gradually increased during AD process. The changes rate, VFAs, microbial community structure fermentation tanks analyzed to identify optimal dosage Fe3O4@BC maximum OLR. results indicated that at OLR 3.715 g (VS)/L·d, addition mg/L most effectively promoted an increase reduced VFAs compared other treatments. Under these conditions, reached 0.658 L/g (VS). Furthermore, enhanced both diversity abundance bacteria archaea. At genus level, Christensenellaceae_R-7_group, Sphaerochaeta, archaeal Thermovirga notably increased.

Language: Английский

Citations

1