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Bioresour Technol

Title:		Early-stage response in anaerobic bioreactors due to high sulfate loads: Hydrogen sulfide yield and other organic volatile sulfur compounds as a sign of microbial community modifications
Author(s):		Olivera C; Tondo ML; Girardi V; Fattobene L; Herrero MS; Perez LM; Salvatierra LM;
Address:		"Instituto de Investigaciones en Ingenieria Ambiental, Quimica y Biotecnologia Aplicada - INGEBIO-, Facultad de Quimica e Ingenieria del Rosario, Pontificia Universidad Catolica Argentina (UCA), Av. Pellegrini 3314 (S2002QEO), Rosario (Santa Fe), Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina. Instituto de Investigaciones en Ingenieria Ambiental, Quimica y Biotecnologia Aplicada - INGEBIO-, Facultad de Quimica e Ingenieria del Rosario, Pontificia Universidad Catolica Argentina (UCA), Av. Pellegrini 3314 (S2002QEO), Rosario (Santa Fe), Argentina. Instituto de Investigaciones en Ingenieria Ambiental, Quimica y Biotecnologia Aplicada - INGEBIO-, Facultad de Quimica e Ingenieria del Rosario, Pontificia Universidad Catolica Argentina (UCA), Av. Pellegrini 3314 (S2002QEO), Rosario (Santa Fe), Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina. Electronic address: lucas_salvatierra@uca.edu.ar"
Journal Title:		Bioresour Technol
Year:		2022
Volume:		20220302
Issue:
Page Number:		126947 -
DOI:		10.1016/j.biortech.2022.126947
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"In this work, the early-stage response of six lab-scale biogas bioreactors fed with different amounts of a sulfate-rich organic agro-industrial effluent was investigated. Biogas characterization, gas chromatography selective for sulfur compounds and high-throughput sequencing of 16S rRNA gene were performed. Hydrogen sulfide (H(2)S) yield went from transient to steady state in approximately 2 weeks for all the studied conditions. In addition, volatile sulfur compounds (VSCs), like methanethiol (MeSH) and dimethyl sulfide (DMS), were generated at high sulfate loads. Changes were evidenced in the microbial community structures, with a higher abundance of genes involved in the dissimilatory sulfate-reduction pathway in high loaded sulfate bioreactors, as determined by PICRUSt analysis. Principal component analysis (PCA) and correlation analyses evidenced strong relationships between H(2)S, VSCs and the microbial community. Sulfate-reducing bacteria (SRB) like Desulfocarbo, Desulfocella and Desulfobacteraceae might be possibly linked with methylation processes of H(2)S"
Keywords:		"Anaerobiosis Bioreactors/microbiology *Hydrogen Sulfide/metabolism *Microbiota RNA, Ribosomal, 16S/genetics/metabolism Sulfates/metabolism Sulfur Compounds Biogas Microbial Community Sulfate Sulfide Volatile Sulfur Compounds;"
Notes:		"MedlineOlivera, Camila Tondo, Maria Laura Girardi, Valentina Fattobene, Lucia Herrero, Maria Sol Perez, Leonardo Martin Salvatierra, Lucas Matias eng England 2022/03/06 Bioresour Technol. 2022 Apr; 350:126947. doi: 10.1016/j.biortech.2022.126947. Epub 2022 Mar 2"