Insight into the influence of microbial aggregate types on nitrogen removal performance and microbial community in the anammox process - A review and meta-analysis.
Anammox
Meta-analysis
Microbial aggregate types
Microbial community
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:
20 Apr 2020
20 Apr 2020
Historique:
received:
04
09
2019
revised:
25
12
2019
accepted:
05
01
2020
pubmed:
28
1
2020
medline:
25
4
2020
entrez:
28
1
2020
Statut:
ppublish
Résumé
The anaerobic ammonium oxidation (anammox) process has been paid close attention in the wastewater treatment field because of its energy-saving advantages. Different microbial aggregates have been used in the anammox process, and there is an urgent need to evaluate the comparative efficiencies of the widely used types of microbial aggregates with respect to their nitrogen removal performance as well as microbial community. To address this, 1724 published papers concentrating on three types of microbial aggregates, namely granules, biofilm, and flocs were compiled. A quantitative meta-analysis was carried out to compare the standard error of nitrogen removal efficiencies among these three microbial aggregates. The data sources of this meta-analysis comprised articles on granules (42%), followed by those on biofilm (33%) and flocs (25%). The granular sludge appeared to be competent in achieving the highest average nitrogen removal efficiencies of 81.1%, followed by biofilm (80.8%). Flocs provided comparatively poor removal of nitrogen pollutants with the lowest removal efficiency of 74.1%. Biofilm had the highest abundance of functional microbial communities with 43.4% on Candidatus Kuenenia and 11.2% on Candidatus Brocadia, which were detected in the anammox system as common genera. This meta-analysis suggested that the microbial aggregate types of granules and biofilm had a relatively low heterogeneity and high total nitrogen removal efficiencies for the anammox process and were the recommended microbial aggregates for anammox bacteria cultivation and operation of the anammox process.
Identifiants
pubmed: 31986383
pii: S0048-9697(20)30081-4
doi: 10.1016/j.scitotenv.2020.136571
pii:
doi:
Substances chimiques
Ammonium Compounds
0
Sewage
0
Nitrogen
N762921K75
Types de publication
Journal Article
Meta-Analysis
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
136571Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declared that they have no conflicts of interest to this work. We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.