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Fate of antibiotic resistance genes during anaerobic digestion of sewage sludge: Role of solids retention times in different configurations.

Abstract：

:In this study, three anaerobic digestion experiments were established to investigate the effects of solids retention times (SRT) on the fate of antibiotic resistance genes (ARGs) including anaerobic digestion of sewage sludge (CK), one-stage anaerobic digestion of microwave pretreatment sludge (MW) and two-stage anaerobic digestion of microwave pretreatment sludge (Acid stage and CH4 stage). The response of ARGs to the SRT varied significantly from ARG types and reactor configurations. Shorter SRT could avail the ARGs reduction for CK and two-stage digestion, while MW need longer SRT for the ARGs reduction. Concerning the variance of microbial community caused by reactor configurations, the role of SRT was limited. The partial redundancy analysis and structural equation models analysis indicated that the role of SRT on the ARGs fate could be attributed the most to the co-selection from heavy metals.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Zhang J,Liu J,Lu T,Shen P,Zhong H,Tong J,Wei Y

doi

10.1016/j.biortech.2018.12.008

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

488-495

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(18)31652-3

journal_volume

274

pub_type

杂志文章

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