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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 <jats:italic>Salmonella<\/jats:italic>, were isolated from samples collected at key stages of the process and characterized for antibiotic resistance to macrolide, \u03b2-lactam, quinolone, and aminoglycoside families. 16S rRNA phylogeny data revealed that the process clearly evolved toward a prevalence of <jats:italic>Firmicutes<\/jats:italic> and <jats:italic>Actinobacteria<\/jats:italic> phyla, removing the fecal load. Moreover, antibiotic-resistant microorganisms present in the raw materials were reduced, since these were isolated only in the bio-oxidative phase. Therefore, industrial composting of sewage sludge results in a bio-safe final product suitable for use in a variety of applications.<\/jats:p>","DOI":"10.3389\/fmicb.2021.784071","type":"journal-article","created":{"date-parts":[[2021,12,24]],"date-time":"2021-12-24T07:58:10Z","timestamp":1640332690000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":19,"title":["Industrial Composting of Sewage Sludge: Study of the Bacteriome, Sanitation, and Antibiotic-Resistant Strains"],"prefix":"10.3389","volume":"12","author":[{"given":"Juan A.","family":"L\u00f3pez-Gonz\u00e1lez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda J.","family":"Estrella-Gonz\u00e1lez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosario","family":"Lerma-Moliz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Macarena M.","family":"Jurado","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisca","family":"Su\u00e1rez-Estrella","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda J.","family":"L\u00f3pez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,12,24]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"778","DOI":"10.1007\/s12668-019-00658-4","article-title":"World health organization report: current crisis of antibiotic resistance.","volume":"9","author":"Abadi","year":"2019","journal-title":"Bionanoscience"},{"key":"B2","doi-asserted-by":"publisher","first-page":"1684","DOI":"10.1016\/j.jclepro.2016.11.121","article-title":"Life cycle assessment (LCA) of digested sewage sludge incineration for heat and power production.","volume":"142","author":"Abu\u015fo\u011flu","year":"2017","journal-title":"J. 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