AI Article Synopsis
- A study explored using FeO on conductive carbon cloth (FC) to enhance propionate breakdown in anaerobic digestion reactors.
- The reactors with FC showed significant increases in cumulative methane production (15.4%) and propionate degradation (19.67%) compared to control reactors.
- Findings indicated that direct interspecies electron transfer (DIET) improved in the FC reactors, with higher populations of related microorganisms and enhanced electron exchange capabilities due to FeO's effects on extracellular polymeric substances.
Article Abstract
In this study, a FeO supported on conductive carbon cloth (FC) was prepared and supplemented into anaerobic digestion reactors to improve propionate degradation. In the FC-supplemented reactors, the cumulative methane production and propionate degradation increased by 15.4% and 19.67% compared with those of the control, respectively. Less methane production with H/CO as the sole substrate in the culture taken from the FC reactors suggested that interspecies hydrogen transfer in the FC reactors was weaker. These results suggested that direct interspecies electron transfer (DIET) was established in the FC reactors to improve the performance. FeO increased the secretion of electron shuttle components of extracellular polymeric substances to increase electron exchange capacity of biomass of the FC reactors, which further facilitated the DIET. Analysis on microbial communities confirmed that the abundance of microorganisms-related DIET in the FC reactors was higher than that in the control.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2020.122796 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Sustainable biomethane production from waste biomass: challenges associated with process optimization in improving the yield.
Environ Sci Pollut Res Int
January 2025
Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Akademicka Str. 2, 44-100, Gliwice, Poland.
Various novel technologies are currently under development aimed at improving bio-methane output to tackle challenges related to process stability, biogas production, and methane quality in the anaerobic digestion (AD) process. The management of substrate type, temperature, pH, hydraulic retention time (HRT), organic loading rate (OLR), and inoculum origin is essential for ensuring process effectiveness, minimizing inhibition, and maximizing production of biogas and methane yield. The review emphasizes sustainability, focusing on the environmental and economic benefits of anaerobic digestion, including the reduction of greenhouse gas (GHG) emissions, the minimization of landfill waste, and the provision of renewable energy sources.
View Article and Find Full Text PDFInsight into the evolution of phosphorous conversion, microbial community and functional gene expression during anaerobic co-digestion of food waste and excess sludge with spicy substances exposure.
Chemosphere
December 2024
Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin 541004, PR China. Electronic address:
Garlic and chili are widely used as food flavoring agents in food cooking, therefore might be accumulated in large amounts in food waste (FW). The effects of garlic and chili on the dissolution, hydrolysis, acidification and methanation in an anaerobic co-digestion system were investigated during the combined co-digestion of FW and excess sludge (ES). Additionally, the transformation of phosphorus form and microbial metabolism changes during the process were analyzed.
View Article and Find Full Text PDFElectrochemical optimization of bioelectrochemically improved anaerobic digestion for agricultural digestates' valorisation to biomethane.
J Environ Manage
December 2024
ENGIE Lab Crigen, 93240, Stains, Paris, France. Electronic address:
Bioelectrochemically improved anaerobic digestion (AD-BES) represents an upgrading strategy for existing biogas plants, consisting of the integration of bioelectrodes within the AD reactor. For this study, a series of laboratory-scale AD-BES reactors were operated, valorising agricultural digestates through the production of biogas. The reactors were inoculated and started-up with three different digestates, leading to significant differences in the microbial community developed on the bioelectrodes.
View Article and Find Full Text PDFEvaluation of intestinal biopsy tissue preservation methods to facilitate large-scale mucosal microbiota research.
EBioMedicine
December 2024
Translational & Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom; Department of Gastroenterology, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom. Electronic address:
Background: Large-scale multicentre studies are needed to understand complex relationships between the gut microbiota, health and disease. Interrogating the mucosal microbiota may identify important biology not captured by stool analysis. Gold standard tissue cryopreservation ('flash freezing') limits large-scale study feasibility.
View Article and Find Full Text PDFBiohydrogen fermentation from pretreated biomass in lignocellulose biorefinery: Effects of inhibitory byproducts and recent progress in mitigation strategies.
Biotechnol Adv
December 2024
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China. Electronic address:
Lignocellulosic biomass (LCB) is expected to play a critical role in achieving the goal of biomass-to-bioenergy conversion because of its wide distribution and low price. Biomass fermentation is a promising method for the sustainable generation of biohydrogen (bioH) from the renewable feedstock. Due to the inherent resistant structure of biomass, LCB needs to be pretreated to improve its digestibility and utilization.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!