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Sludge bio-drying followed by land application could control the spread of antibiotic resistance genes
Zhang, Junya; Sui, Qianwen; Lu, Tiedong; Zhong, Hui; Shen, Peihong; Wei, Yuansong
2019-09-01
Source PublicationENVIRONMENT INTERNATIONAL
ISSN0160-4120
Volume130Pages:-
AbstractThe process of sludge bio-drying has been adopted in response to the increasing amount of residual sewage sludge. It has been demonstrated that sludge bio-drying effectively reduces both antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs), whereas ermF, tetX, and sulII become enriched in response to the dynamic development of the microbial community. The present study further demonstrated that the land application of sludge bio-drying products under current application rate did not cause an increase in the abundance of quantified ARGs in the soil but the persistence of ARB should be paid attention. Although land application introduced ermF, tetX, and tetG into the soil, these soon decreased to control levels. Furthermore, the decay rate varied between soil types, with red soil being the most persistent based on kinetics modeling. The fate of ARGs could also be attributed to the dynamics of the microbial community during land application, and the genus Parasegetibacter, which can degrade extracellular DNA, might play a key role in the control of ARGs. In summary, sludge bio-drying following land application could constitute an effective means of controlling the spread of ARGs, and microbial community changes contributed the most to the fate of the ARGs during the entire treatment chain (residual sewage sludge -> bio-drying process -> land application).
Department水污染控制实验室
KeywordBio-drying Sewage sludge Antibiotic resistance genes Land application Soil types
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43280
Collection水污染控制实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Water Pollut Control Technol, Beijing 100085, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Junya,Sui, Qianwen,Lu, Tiedong,et al. Sludge bio-drying followed by land application could control the spread of antibiotic resistance genes[J]. ENVIRONMENT INTERNATIONAL,2019,130:-.
APA Zhang, Junya,Sui, Qianwen,Lu, Tiedong,Zhong, Hui,Shen, Peihong,&Wei, Yuansong.(2019).Sludge bio-drying followed by land application could control the spread of antibiotic resistance genes.ENVIRONMENT INTERNATIONAL,130,-.
MLA Zhang, Junya,et al."Sludge bio-drying followed by land application could control the spread of antibiotic resistance genes".ENVIRONMENT INTERNATIONAL 130(2019):-.
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