Impacts of diel temperature variations on nitrogen removal and metacommunity of anammox biofilm reactors.
Anammox
Bacterial diversity
Community composition
Diel temperature perturbation
Nitrogen removal
Journal
Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072
Informations de publication
Date de publication:
01 Sep 2019
01 Sep 2019
Historique:
received:
01
02
2019
revised:
05
05
2019
accepted:
06
05
2019
pubmed:
28
5
2019
medline:
7
11
2019
entrez:
27
5
2019
Statut:
ppublish
Résumé
The influence of diel temperature variations (DTVs) on nitrogen removal and bacterial communities was investigated in two parallel anammox reactors (i.e., control and DTV reactors). The control reactor was operated at a constant temperature of 30 °C, whereas the DTV reactor was operated in a temperature fluctuation mode with a cycle of 12/12 h of high/low temperatures. Nine water temperature variations for the day/night periods were set from 30/30 °C (i.e., Δ0 °C) to 38/22 °C (i.e., Δ16 °C). An increase in DTVs from Δ8 °C (34/26 °C) to Δ16 °C (38/22 °C) caused a significant decline in reactor performance and a shift in bacterial diversity. Compared to the control reactor, for instance, nitrogen removal efficiency decreased (P < 0.05) when temperature fluctuations exceeded Δ8 °C in the DTV reactor with a decreasing ΔNO
Identifiants
pubmed: 31129376
pii: S0043-1354(19)30401-4
doi: 10.1016/j.watres.2019.05.021
pii:
doi:
Substances chimiques
RNA, Ribosomal, 16S
0
Nitrogen
N762921K75
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1-9Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.