Operation mechanism of constructed wetland-microbial fuel cells for wastewater treatment and electricity generation: A review.
Constructed wetlands
Electricity generation
Microbial fuel cells
Operation mechanism
Wastewater treatment
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
30
05
2020
revised:
02
07
2020
accepted:
04
07
2020
pubmed:
28
7
2020
medline:
12
8
2020
entrez:
28
7
2020
Statut:
ppublish
Résumé
Constructed wetland-microbial fuel cells (CWL-MFCs) are eco-friendly and sustainable technology, simultaneously implementing contaminant removal and electricity production. According to intensive research over the last five years, this review on the operation mechanism was conducted for in-depth understanding and application guidance of CWL-MFCs. The electrochemical mechanism based on anodic oxidation and cathodic reduction is the core for improved treatment in CWL-MFCs compared to CWLs. As the dominant bacterial community, the abundance and gene-expression patterns of electro-active bacteria responds to electrode potentials and contaminant loadings, further affecting operational efficiency of CWL-MFCs. Plants benefit COD and N removal by supplying oxygen for aerobic degradation and rhizosphere secretions for microorganisms. Multi-electrode configuration, carbon-based electrodes and rich porous substrates affect transfer resistance and bacterial communities. The possibilities of CWL-MFCs targeting at recalcitrant contaminants like flame retardants and interchain interactions among effect components need systematic research.
Identifiants
pubmed: 32713782
pii: S0960-8524(20)31080-4
doi: 10.1016/j.biortech.2020.123808
pii:
doi:
Substances chimiques
Waste Water
0
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
123808Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.