Nitrite inhibition of microalgae induced by the competition between microalgae and nitrifying bacteria.
Ammonium oxidising bacteria
Microalgae
Nitrite
Outdoor
Wastewater
Journal
Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072
Informations de publication
Date de publication:
01 Apr 2020
01 Apr 2020
Historique:
received:
17
06
2019
revised:
07
01
2020
accepted:
09
01
2020
pubmed:
25
1
2020
medline:
25
2
2020
entrez:
25
1
2020
Statut:
ppublish
Résumé
Outdoor microalgae cultivation systems treating anaerobic membrane bioreactor (AnMBR) effluents usually present ammonium oxidising bacteria (AOB) competition with microalgae for ammonium uptake, which can cause nitrite accumulation. In literature, nitrite effects over microalgae have shown controversial results. The present study evaluates the nitrite inhibition role in a microalgae-nitrifying bacteria culture. For this purpose, pilot- and lab-scale assays were carried out. During the continuous outdoor operation of the membrane photobioreactor (MPBR) plant, biomass retention time (BRT) of 2 d favoured AOB activity, which caused nitrite accumulation. This nitrite was confirmed to inhibit microalgae performance. Specifically, continuous 5-d lab-scale assays showed a reduction in the nitrogen recovery efficiency by 32, 42 and 80% when nitrite concentration in the culture accounted for 5, 10 and 20 mg N·L
Identifiants
pubmed: 31978839
pii: S0043-1354(20)30035-X
doi: 10.1016/j.watres.2020.115499
pii:
doi:
Substances chimiques
Nitrites
0
Waste Water
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
115499Informations 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.