Engineering extracellular polymer substrates biosynthesis and carbon felt-carbon nanotube hybrid electrode to promote biofilm electroactivity and bioelectricity production.
Biofilm
Extracellular polymer substrates
Microbial fuel cells
Shewanella oneidensis
Synthetic biology
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
15 Dec 2023
15 Dec 2023
Historique:
received:
26
06
2023
revised:
07
08
2023
accepted:
24
08
2023
medline:
6
11
2023
pubmed:
3
9
2023
entrez:
2
9
2023
Statut:
ppublish
Résumé
Organic-rich thin stillage is a significant by-product of the liquor brewing industry, and its direct release into the environment can cause severe water pollution. Microbial fuel cells (MFCs) offer the possibility for converting organic matters in thin stillage into clean electricity. However, limited biofilm formation and conductivity are crucial bottlenecks in restricting the power harvest of MFCs. Here, to efficiently harvest electricity power from thin stillage of liquor industry, we adopted a modular engineering strategy to increase biofilm formation and conductivity of Shewanella oneidensis via enhancing the component biosynthesis of extracellular polymer substrates (EPS) matrix, regulating intracellular c-di-GMP level, and constructing of artificial hybrid system. The results showed that the constructed CNTs@CF-EnBF2 hybrid system with low charge-transfer resistance enabled a maximum output power density of 576.77 mW/m
Identifiants
pubmed: 37659546
pii: S0048-9697(23)05220-8
doi: 10.1016/j.scitotenv.2023.166595
pii:
doi:
Substances chimiques
Carbon Fiber
0
Nanotubes, Carbon
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
166595Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare no financial or commercial conflict of interest.