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Profiles and drivers of antibiotic resistance genes distribution in one-stage and two-stage sludge anaerobic digestion based on microwave-H.sub.2O.sub.2 pretreatment.(Report)

Zhang, Junya ; Liu, Jibao ; Wang, Yawei ; Yu, Dawei ; Sui, Qianwen ; Wang, Rui ; Chen, Meixue ; Tong, Juan ; Wei, Yuansong

Bioresource Technology, 2017, Vol.241, p.573 [Tạp chí có phản biện]

ISSN: 0960-8524 ; DOI: 10.1016/j.biortech.2017.05.157

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  • Nhan đề:
    Profiles and drivers of antibiotic resistance genes distribution in one-stage and two-stage sludge anaerobic digestion based on microwave-H.sub.2O.sub.2 pretreatment.(Report)
  • Tác giả: Zhang, Junya ; Liu, Jibao ; Wang, Yawei ; Yu, Dawei ; Sui, Qianwen ; Wang, Rui ; Chen, Meixue ; Tong, Juan ; Wei, Yuansong
  • Chủ đề: Motor Vehicle Drivers – Analysis ; Heavy Metals – Analysis ; Sewage Treatment – Analysis ; Control Systems – Analysis ; Genetic Research – Analysis ; Water Pollution Control – Analysis ; Genes – Analysis ; Microbial Drug Resistance – Analysis
  • Là 1 phần của: Bioresource Technology, 2017, Vol.241, p.573
  • Mô tả: Byline: Junya Zhang (a,b,c,1), Jibao Liu (d,1), Yawei Wang (a,b,c), Dawei Yu (a,b,c), Qianwen Sui (a,b,c), Rui Wang (a,b,c), Meixue Chen (a,b,c), Juan Tong (a,b,c), Yuansong Wei [yswei@rcees.ac.cn] (a,b,c,*) Keywords Antibiotic resistance genes; Waste activated sludge; Co-selection from heavy metals; Microwave pretreatment; Two-stage anaerobic digestion Highlights * Pretreatment with subsequent anaerobic digestion enhanced ARGs abundance reduction. * Two-stage system showed some advantages over the ARGs abundance reduction. * Anaerobic digestion was more effective on pathogens control than pretreatment. * Changes of bacterial community was significantly correlated with ARGs profiles. * Anaerobic digestion was a potential technology for ARGs control. Abstract Three anaerobic digestion (AD) processes of waste activated sludge (WAS) were established including the control (mono-WAS), one-stage AD and two-stage AD along with microwave-H.sub.2O.sub.2 pre-treatment (MW-H.sub.2O.sub.2) to investigate the profiles and drivers of antibiotic resistance genes (ARGs) distribution concerning co-selection from heavy metals, intI1 and microbial community through qPCR and high-throughput sequencing method. Results showed that MW-H.sub.2O.sub.2 could reduce the absolute gene copies of all ARGs while increased the relative abundance of most ARGs. After subsequent AD, both total ARGs quantities and relative abundance were enriched while two-stage AD showed some advantages over ARGs abundance reduction. Besides, AD was more effective on the potential pathogens reduction than MW-H.sub.2O.sub.2. AD could reduce the role of intI1 on the spread of ARGs, while mantel test and procrustes analysis indicated that the variation of ARGs abundance was closely associated with the discrepancy of bacterial community. Abbreviations ARGs, antibiotic resistance genes; ARB, antibiotic resistance bacteria; AD, anaerobic digestion; WAS, waste activated sludge; MW, microwave pretreatment; MW-WAS, microwave pretreatment of waste activated sludge; MW-H.sub.2O.sub.2, microwave pretreatment along with H.sub.2O.sub.2 addition; MW-Acid, the acidification phase of the two-stage anaerobic digestion; MW-CH.sub.4, the methane-producing phase of the two-stage anaerobic digestion; WWTPs, wastewater treatment plants Author Affiliation: (a) State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (b) Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (c) University of Chinese Academy of Sciences, Beijing 100049, China (d) School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China * Corresponding author. Article History: Received 23 March 2017; Revised 24 May 2017; Accepted 25 May 2017 (footnote)1 Junya Zhang and Jibao Liu contributed equally to this work.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0960-8524 ; DOI: 10.1016/j.biortech.2017.05.157

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