Journal
BIORESOURCE TECHNOLOGY
Volume 217, Issue -, Pages 28-36Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.02.140
Keywords
Antibiotic resistance genes; Sewage sludge; Food waste; Anaerobic digestion; Metal resistance genes
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In this study, anaerobic digestion of mono-SS, MW-SS:FW and SS:MW-FW was investigated to understand the fate of ARGs and its drivers. Anaerobic digestion was effective for the reduction of metal resistance genes (MRGs), and could reduce the abundance of blaOXA-1, sulI and tetG, while sulII in co-digestion and bla(TEM) and ereA only in MW-SS. ARGs reduction could be partly attributed to the reduction of co-selective pressure from heavy metals reflected by MRGs. However, the abundance of mefA/E, ermB, ermF, tetM and tetX increased significantly. Anaerobic co-digestion, especially for MW-SS, could reduce total ARGs abundance compared with mono-SS, and evolution of bacterial community was the main driver for the fate of ARGs. (C) 2016 Elsevier Ltd. All rights reserved.
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