Nitrite soaking pretreatment induced initial denitrifying nitrite accumulation.
Denitrifying nitrite accumulation
Microbial community
Nitrite soaking
Partial denitrification
Pre-treatment
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Nov 2023
Nov 2023
Historique:
received:
28
06
2023
revised:
27
07
2023
accepted:
01
08
2023
medline:
11
9
2023
pubmed:
7
8
2023
entrez:
6
8
2023
Statut:
ppublish
Résumé
Partial denitrification (PD) could be another method for obtaining nitrite. However, PD startup takes a long time limiting its investigation and application. This study proposed nitrite soaking as a pretreatment method for starting PD. Results showed that denitrifying nitrite accumulation (4.20 mg/L) emerged after previously soaking by 10 mg/L nitrite for 9 h. When the duration was 6 h, comparing different soaked nitrite concentrations, the highest denitrifying nitrite accumulation amount (4.92 mg/L) was obtained in the 20 mg/L group. Nevertheless, high pH of 9 and frequent feeding could further advantage denitrifying nitrite accumulation. Pretreatment as a disturbance would impel the microbial community to change from complete denitrification towards PD.
Identifiants
pubmed: 37544538
pii: S0960-8524(23)01033-7
doi: 10.1016/j.biortech.2023.129605
pii:
doi:
Substances chimiques
Nitrites
0
Nitrogen
N762921K75
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
129605Informations de copyright
Copyright © 2023 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.