Intertwining of the C-N-S cycle in passive and aerated constructed wetlands.
Anammox
Autotrophic denitrification
Clogging
Deep constructed wetlands
Journal
World journal of microbiology & biotechnology
ISSN: 1573-0972
Titre abrégé: World J Microbiol Biotechnol
Pays: Germany
ID NLM: 9012472
Informations de publication
Date de publication:
13 Aug 2024
13 Aug 2024
Historique:
received:
28
05
2024
accepted:
05
08
2024
medline:
13
8
2024
pubmed:
13
8
2024
entrez:
13
8
2024
Statut:
epublish
Résumé
The microbial processes occurring in constructed wetlands (CWs) are difficult to understand owing to the complex interactions occurring between a variety of substrates, microorganisms, and plants under the given physicochemical conditions. This frequently leads to very large unexplained nitrogen losses in these systems. In continuation of our findings on Anammox contributions, our research on full-scale field CWs has suggested the significant involvement of the sulfur cycle in the conventional C-N cycle occurring in wetlands, which might closely explain the nitrogen losses in these systems. This paper explored the possibility of the sulfur-driven autotrophic denitrification (SDAD) pathway in different types of CWs, shallow and deep and passive and aerated systems, by analyzing the metagenomic bacterial communities present within these CWs. The results indicate a higher abundance of SDAD bacteria (Paracoccus and Arcobacter) in deep passive systems compared to shallow systems and presence of a large number of SDAD genera (Paracoccus, Thiobacillus, Beggiatoa, Sulfurimonas, Arcobacter, and Sulfuricurvum) in aerated CWs. The bacteria belonging to the functional category of dark oxidation of sulfur compounds were found to be enriched in deep and aerated CWs hinting at the possible role of the SDAD pathway in total nitrogen removal in these systems. As a case study, the percentage nitrogen removal through SDAD pathway was calculated to be 15-20% in aerated wetlands. The presence of autotrophic pathways for nitrogen removal can prove highly beneficial in terms of reducing sludge generation and hence reducing clogging, making aerated CWs a sustainable wastewater treatment solution.
Identifiants
pubmed: 39136809
doi: 10.1007/s11274-024-04102-y
pii: 10.1007/s11274-024-04102-y
doi:
Substances chimiques
Nitrogen
N762921K75
Sulfur
70FD1KFU70
Carbon
7440-44-0
Wastewater
0
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
301Subventions
Organisme : Department of Science and Technology, Ministry of Science and Technology, India
ID : DST/TM/WTI/WIC/2K17/83
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer Nature B.V.
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