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Biodegradation mechanism of typical fluoroquinolones in sewage-sludge composts
Zhang, Jun1,2; Lu, Yulan1,2; Yan, Qinying1,2; Liu, Hongtao3; Xi, Beidou4; Wang, Dunqiu1,2
2021-06-01
Source PublicationDESALINATION AND WATER TREATMENT
ISSN1944-3994
Volume225Pages:63-75
Corresponding AuthorZhang, Jun(zjun@glut.edu.cn)
AbstractThe biodegradation mechanism of fluoroquinolones (FQs) during composting is the key information to accurately assess and effectively control the environmental risk caused by FQs in sewage sludge. This study investigated the biodegradation of two FQs (norfloxacin [NOR] and ofloxacin [OFL]) using a series of sludge composts over a 56-d incubation period. Sludge composts were collected at the mesophilic, thermophilic, and curing phases from the matrix of a pilot-scale sewage sludge composter; spiked with NOR and OFL (each 5 mg/kg); and incubated at 35 (mesophilic), 55 (thermophilic), and 40 degrees C (curing). Compost samples were evaluated by determining FQ concentration, intermediate metabolites, enzymatic activity (laccase, manganese peroxidase, and lignin peroxidase), and bacterial and fungal communities. Results showed that NOR was likely to be predominantly biodegraded via the acetylation route and the routes for OFL in each phase varied, while the main metabolites from both NOR and OFL retained the FQ core structure related to the antibacterial activity. Only manganese peroxidase had a significant correlation with FQ residue during the mesophilic phase. Proteobacteria and Ascomycota were the dominant bacterial and fungal phyla in the incubated sludge compost, respectively, and Pseudomonas was the most involved bacterial genus for FQ biodegradation in the sludge composts with Exophiala, Dissoconium, Talaromyces as the fungal genera.
KeywordSewage sludge Antibiotics Composting Biodegradation Microbial community
DOI10.5004/dwt.2021.27198
WOS KeywordANTIBIOTIC-RESISTANCE GENES ; WASTE-WATER ; VETERINARY ANTIBIOTICS ; ANTIBACTERIAL ACTIVITY ; EFFICIENT REDUCTION ; TREATMENT PLANTS ; DEGRADATION ; FATE ; NORFLOXACIN ; REMOVAL
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51868011] ; Department of Science and Technology of Guangxi Zhuang Autonomous Region[2018GXNSFGA281001] ; Department of Science and Technology of Guangxi Zhuang Autonomous Region[2016GXNSFAA380005] ; Special Fund for Guangxi Distinguished Experts
Funding OrganizationNational Natural Science Foundation of China ; Department of Science and Technology of Guangxi Zhuang Autonomous Region ; Special Fund for Guangxi Distinguished Experts
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000672133600008
PublisherDESALINATION PUBL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163872
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Jun
Affiliation1.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory &, Guilin 541004, Peoples R China
2.Guilin Univ Technol, Collaborat Innovat Ctr Water Pollut Control & Wat, Guilin 541004, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jun,Lu, Yulan,Yan, Qinying,et al. Biodegradation mechanism of typical fluoroquinolones in sewage-sludge composts[J]. DESALINATION AND WATER TREATMENT,2021,225:63-75.
APA Zhang, Jun,Lu, Yulan,Yan, Qinying,Liu, Hongtao,Xi, Beidou,&Wang, Dunqiu.(2021).Biodegradation mechanism of typical fluoroquinolones in sewage-sludge composts.DESALINATION AND WATER TREATMENT,225,63-75.
MLA Zhang, Jun,et al."Biodegradation mechanism of typical fluoroquinolones in sewage-sludge composts".DESALINATION AND WATER TREATMENT 225(2021):63-75.
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