Comparative analysis of microbial communities from different full-scale haloalkaline biodesulfurization systems.
Appl Microbiol Biotechnol
; 106(4): 1759-1776, 2022 Feb.
Article
em En
| MEDLINE
| ID: mdl-35147744
ABSTRACT
In biodesulfurization (BD) at haloalkaline and dO2-limited conditions, sulfide-oxidizing bacteria (SOB) effectively convert sulfide into elemental sulfur that can be used in agriculture as a fertilizer and fungicide. Here we show which bacteria are present in this biotechnological process. 16S rRNA gene amplicon sequencing of biomass from ten reactors sampled in 2018 indicated the presence of 444 bacterial Amplicon Sequence Variants (ASVs). A core microbiome represented by 30 ASVs was found in all ten reactors, with Thioalkalivibrio sulfidiphilus as the most dominant species. The majority of these ASVs are phylogenetically related to bacteria previously identified in haloalkaline BD processes and in natural haloalkaline ecosystems. The source and composition of the feed gas had a great impact on the microbial community composition followed by alkalinity, sulfate, and thiosulfate concentrations. The halophilic SOB of the genus Guyparkeria (formerly known as Halothiobacillus) and heterotrophic SOB of the genus Halomonas were identified as potential indicator organisms of sulfate and thiosulfate accumulation in the BD process. KEY POINTS ⢠Biodesulfurization (BD) reactors share a core microbiome ⢠The source and composition of the feed gas affects the microbial composition in the BD reactors ⢠Guyparkeria and Halomonas indicate high concentrations of sulfate and thiosulfate in the BD process.
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Base de dados:
MEDLINE
Assunto principal:
Reatores Biológicos
/
Microbiota
Idioma:
En
Revista:
Appl Microbiol Biotechnol
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Holanda