Fate of antibiotic resistance genes in mesophilic and thermophilic anaerobic digestion of chemically enhanced primary treatment (CEPT) sludge

Fate of antibiotic resistance genes in mesophilic and thermophilic anaerobic digestion of chemically enhanced primary treatment (CEPT) sludge

[Display omitted] •Anaerobic digestion of CEPT sludge was investigated.•The remarkable decreases in total ARGs and intI1 genes were observed.•Shifts in bacterial community were responsible for changes in ARGs and intI1.•Network analysis further revealed potential host bacteria for ARGs and intI1. An...

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Veröffentlicht in:Bioresource technology 2017-11, Vol.244 (Pt 1), p.433-444
Hauptverfasser: Jang, Hyun Min, Shin, Jingyeong, Choi, Sangki, Shin, Seung Gu, Park, Ki Young, Cho, Jinwoo, Kim, Young Mo
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Sprache:eng
Schlagworte:
Anaerobic digestion (AD)
Anaerobiosis
Anti-Bacterial Agents
Antibiotic resistance genes (ARGs)
Bacteria - genetics
Chemically enhanced primary treatment (CEPT)
Drug Resistance, Microbial
Microbial community
quantitative PCR (qPCR)
Sewage
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container_end_page 444
container_issue Pt 1
container_start_page 433
container_title Bioresource technology
container_volume 244
creator Jang, Hyun Min
Shin, Jingyeong
Choi, Sangki
Shin, Seung Gu
Park, Ki Young
Cho, Jinwoo
Kim, Young Mo
description [Display omitted] •Anaerobic digestion of CEPT sludge was investigated.•The remarkable decreases in total ARGs and intI1 genes were observed.•Shifts in bacterial community were responsible for changes in ARGs and intI1.•Network analysis further revealed potential host bacteria for ARGs and intI1. Anaerobic digestion (AD) of chemically enhanced primary treatment (CEPT) sludge and non-CEPT (conventional sedimentation) sludge were comparatively operated under mesophilic and thermophilic conditions. The highest methane yield (692.46±0.46mL CH4/g VSremoved in CEPT sludge) was observed in mesophilic AD of CEPT sludge. Meanwhile, thermophilic conditions were more favorable for the removal of total antibiotic resistance genes (ARGs). In this study, no measurable difference in the fates and removal of ARGs and class 1 integrin-integrase gene (intI1) was observed between treated non-CEPT and CEPT sludge. However, redundancy analysis indicated that shifts in bacterial community were primarily accountable for the variations in ARGs and intI1. Network analysis further revealed potential host bacteria for ARGs and intI1.
doi_str_mv 10.1016/j.biortech.2017.07.153
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Anaerobic digestion (AD) of chemically enhanced primary treatment (CEPT) sludge and non-CEPT (conventional sedimentation) sludge were comparatively operated under mesophilic and thermophilic conditions. The highest methane yield (692.46±0.46mL CH4/g VSremoved in CEPT sludge) was observed in mesophilic AD of CEPT sludge. Meanwhile, thermophilic conditions were more favorable for the removal of total antibiotic resistance genes (ARGs). In this study, no measurable difference in the fates and removal of ARGs and class 1 integrin-integrase gene (intI1) was observed between treated non-CEPT and CEPT sludge. However, redundancy analysis indicated that shifts in bacterial community were primarily accountable for the variations in ARGs and intI1. 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subjects Anaerobic digestion (AD)
Anaerobiosis
Anti-Bacterial Agents
Antibiotic resistance genes (ARGs)
Bacteria - genetics
Chemically enhanced primary treatment (CEPT)
Drug Resistance, Microbial
Microbial community
quantitative PCR (qPCR)
Sewage
title Fate of antibiotic resistance genes in mesophilic and thermophilic anaerobic digestion of chemically enhanced primary treatment (CEPT) sludge
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