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Acetate and electricity generation from methane in conductive fiber membrane- microbial fuel cells
- Source :
- The Science of the total environment. 804
- Publication Year :
- 2021
-
Abstract
- Microbial conversion of methane to electricity, fuels, and liquid chemicals has attracted much attention. However, due to the low solubility of methane, it is not considered a suitable substrate for microbial fuel cells (MFCs). In this study, a conductive fiber membrane (CFM) module was constructed as the bioanode of methane-driven MFCs, directly delivering methane. After biofilm formation on the CFM surface, a steady voltage output of 0.6 to 0.7 V was recorded, and the CFM-MFCs obtained a maximum power density of 64 ± 2 mW/m2. Moreover, methane oxidation produced a high concentration of intermediate acetate (up to 7.1 mM). High-throughput 16S rRNA gene sequencing suggests that the microbial community was significantly changed after electricity generation. Methane-related archaea formed a symbiotic consortium with characterized electroactive bacteria and fermentative bacteria, suggesting a combination of three types of microorganisms for methane conversion into acetate and electricity.
- Subjects :
- Environmental Engineering
Microbial fuel cell
biology
Bioelectric Energy Sources
Microorganism
Biofilm
Acetates
biology.organism_classification
Pollution
Methane
chemistry.chemical_compound
Electricity generation
Microbial population biology
chemistry
Chemical engineering
Electricity
RNA, Ribosomal, 16S
Anaerobic oxidation of methane
Environmental Chemistry
Waste Management and Disposal
Electrodes
Bacteria
Subjects
Details
- ISSN :
- 18791026
- Volume :
- 804
- Database :
- OpenAIRE
- Journal :
- The Science of the total environment
- Accession number :
- edsair.doi.dedup.....092d68dc5aff5e0f2ee5e5b8dabd3751