Long-term microbial community dynamics at two full-scale biotrickling filters treating pig house exhaust air.
Journal
Microbial biotechnology
ISSN: 1751-7915
Titre abrégé: Microb Biotechnol
Pays: United States
ID NLM: 101316335
Informations de publication
Date de publication:
07 2019
07 2019
Historique:
received:
29
10
2018
revised:
23
03
2019
accepted:
06
04
2019
pubmed:
21
5
2019
medline:
16
4
2020
entrez:
21
5
2019
Statut:
ppublish
Résumé
In this study, the microbial community structure of two full-scale biotrickling filters treating exhaust air from a pig housing facility were evaluated using 16S metabarcoding. The effect of inoculation with activated sludge of a nearby domestic waste water treatment plant was investigated, which is a cheap procedure and easy to apply in practice. The study was performed at a three-stage and a two-stage full-scale biotrickling filter; of which, only the latter was inoculated. Both biotrickling filters evolved towards a rather similar community over time, which differed from the one in the activated sludge used for inoculation. However, the bacterial population at both biotrickling filters showed small differences on the family level. A large population of heterotrophic bacteria, including denitrifying bacteria, was present in both biotrickling filters. In the non-inoculated biotrickling filter, nitrite-oxidizing bacteria (NOB) could not be detected, which corresponded with the incomplete nitrification leading to high nitrite accumulation observed in this system. Inoculation with the wide spectrum inoculum activated sludge had in this study a positive effect on the biotrickling filter performance (higher ammonia removal and lower nitrous oxide production). It could thus be beneficial to inoculate biotrickling filters in order to enrich NOB at the start-up, making it easier to keep the free nitrous acid concentration low enough to not be inhibited by it.
Identifiants
pubmed: 31106964
doi: 10.1111/1751-7915.13417
pmc: PMC6559015
doi:
Substances chimiques
DNA, Ribosomal
0
RNA, Ribosomal, 16S
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
775-786Informations de copyright
© 2019 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology.
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