Intermittent Microaeration Enhanced Anaerobic Digestion: The Key Role of Fe(III)/Fe(II) Cycle and Reactive Oxygen Species DOI
Xuepeng Wang, Jinshuo Zhang, Bowen Yang

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Microaeration has been reported to improve anaerobic digestion, which is generally attributed increased microbial diversity, but a thorough explanation lacking. In this study, it was found that intermittent microaeration (IMA) supplied an digester could oxidize Fe(II) produced by dissimilatory iron reduction (DIR) form Fe(III)/Fe(II) cycle and generate extracellular reactive oxygen species (ROS) treatment of phenol-containing wastewater. The results showed compared the control group without IMA, removal rates COD phenol 29.54 49.68 percentage points, respectively, daily average methane production 85.44%. slowed down loss (13.97%) released from sludge due lower solubility Fe(III) facilitated •OH generation (1.22 ± 0.04 μM) via Fenton-like reactions. DIR accelerated degradation. Metagenomic analysis revealed abundance methanogens antioxidant enzymes-encoding genes in response oxidative stress significantly IMA control, enabling methanogenesis proceed smoothly under microaeration. This study investigated ROS induced during digestion their roles promoting performance, thereby providing new perspective for optimizing systems with

Language: Английский

Bioengineering in Solid-State Fermentation for next sustainable food bioprocessing DOI Creative Commons
Muyideen Olaitan Bamidele, Micheal Bola Bamikale, Eliseo Cárdenas-Hernández

et al.

Next Sustainability, Journal Year: 2025, Volume and Issue: 6, P. 100105 - 100105

Published: Jan. 1, 2025

Language: Английский

Citations

6
Dissecting the Response Mechanisms of Microorganisms in Anaerobic Digestion to Salt Stress in Food Waste DOI
Qingwei Gao, Yuhan Zhang, Lili Li

et al.

ACS ES&T Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

Citations

0
Intermittent Microaeration Enhanced Anaerobic Digestion: The Key Role of Fe(III)/Fe(II) Cycle and Reactive Oxygen Species DOI
Xuepeng Wang, Jinshuo Zhang, Bowen Yang

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Microaeration has been reported to improve anaerobic digestion, which is generally attributed increased microbial diversity, but a thorough explanation lacking. In this study, it was found that intermittent microaeration (IMA) supplied an digester could oxidize Fe(II) produced by dissimilatory iron reduction (DIR) form Fe(III)/Fe(II) cycle and generate extracellular reactive oxygen species (ROS) treatment of phenol-containing wastewater. The results showed compared the control group without IMA, removal rates COD phenol 29.54 49.68 percentage points, respectively, daily average methane production 85.44%. slowed down loss (13.97%) released from sludge due lower solubility Fe(III) facilitated •OH generation (1.22 ± 0.04 μM) via Fenton-like reactions. DIR accelerated degradation. Metagenomic analysis revealed abundance methanogens antioxidant enzymes-encoding genes in response oxidative stress significantly IMA control, enabling methanogenesis proceed smoothly under microaeration. This study investigated ROS induced during digestion their roles promoting performance, thereby providing new perspective for optimizing systems with

Language: Английский

Citations

0