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• W3207795419 endingPage "117505" @default.
• W3207795419 startingPage "117505" @default.
• W3207795419 abstract "• A denitrification desulfurization process inoculated AnAGS was built. • High quality S 0 was obtained in the efficient denitrification desulfurization reactor. • Meta-omics indicated that SOB utilizing SQR were accounted for high S 0 production. • An unexpected enrichment in methanogens was observed. • High activity of Stickland fermentation, likely aiding performance stability. The denitrification desulfurization process is a promising technology for elemental sulfur (S 0 ) production from sulfide containing wastewater. However, the microbial community associated with high S 0 production still is not well studied. This study describes an efficient denitrification S 0 production bioreactor based on inoculation with anaerobic granular sludge. At an optimal S/N molar ratio of 7:2, 80 % of the influent sulfide was transformed to high quality elemental sulfur with a purity of 92.5% while the total inorganic nitrogen removal efficiency was stable at ∼80%. Metatranscriptomic analysis found that community expression of the gene encoding the sulfide-quinone reductase (SQR) was 10-fold greater than that of the flavocytochrome- c sulfide dehydrogenase subunit B ( fccB) . Moreover, the expression level of SQR was also significantly higher than the Dsr gene encoding for dissimilatory sulfate reductase, which encodes a critical S 0 oxidation enzyme. Metagenomic binning analysis confirmed that sulfide-oxidizing bacteria (SOB) utilizing SQR were common in the community and most likely accounted for high S 0 production. An unexpected enrichment in methanogens and high expression activity of bacteria carrying out Stickland fermentation as well as in other bacteria with reduced genomes indicated a complex community supporting stable sulfide oxidation to S 0 , likely aiding in performance stability. This study establishes this treatment approach as an alternative biotechnology for sulfide containing wastewater treatment and sheds light on the microbial interactions associated with high S 0 production." @default.
• W3207795419 created "2021-10-25" @default.
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• W3207795419 date "2021-09-01" @default.
• W3207795419 modified "2023-10-06" @default.
• W3207795419 title "Metagenomics and metatranscriptomics uncover the microbial community associated with high S0 production in a denitrifying desulfurization granular sludge reactor" @default.
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• W3207795419 doi "https://doi.org/10.1016/j.watres.2021.117505" @default.
• W3207795419 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34384948" @default.
• W3207795419 hasPublicationYear "2021" @default.
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