Industrial Composting of Sewage Sludge: Study of the Bacteriome, Sanitation, and Antibiotic-Resistant Strains
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URI: http://hdl.handle.net/10835/15023
DOI: https://doi.org/10.3389/fmicb.2021.784071
DOI: https://doi.org/10.3389/fmicb.2021.784071
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López González, Juan Antonio; Estrella González, Maria José; Lerma Moliz, R.; Jurado Rodríguez, Macarena Del Mar; Suárez Estrella, Francisca; [et al.]Fecha
2021-12-24Resumen
Wastewater treatment generates a huge amount of sewage sludge, which is a source of environmental pollution. Among the alternatives for the management of this waste, industrial composting stands out as one of the most relevant. The objective of this study was to analyze the bacterial population linked to this process and to determine its effectiveness for the reduction, and even elimination, of microorganisms and pathogens present in these organic wastes. For this purpose, the bacteriome and the fecal bacteria contamination of samples from different sewage sludge industrial composting facilities were evaluated. In addition, fecal bacteria indicators and pathogens, such as Salmonella, were isolated from samples collected at key stages of the process and characterized for antibiotic resistance to macrolide, β-lactam, quinolone, and aminoglycoside families. 16S rRNA phylogeny data revealed that the process clearly evolved toward a prevalence of Firmicutes and Actinobacteria phyla, removin...
Palabra/s clave
biosolids
fecal contamination
metagenomics
antibiotic resistance
compost
enterobacteria
clostridia
fecal enterococci