Long-term nitrogen and phosphorus removal, shifts of functional bacteria and fate of resistance genes in bioretention systems under sulfamethoxazole stress

doi:10.1016/j.jes.2022.03.0451001-0742

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Long-term nitrogen and phosphorus removal, shifts of functional bacteria and fate of resistance genes in bioretention systems under sulfamethoxazole stress
	Xu, Yan 2; Zhang, Danyi 2; Xue, Qingju 3; Bu, Chibin 4; Wang, Yajun 1; Zhang, Benchi 5; Wang, Ying 2; Qin, Qingdong 2
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2023-04-01
卷号	126 页码:1-16
关键词	Bioretention system Sulfamethoxazole Coconut -shell activated carbon Zero-valent iron
ISSN号	1001-0742
DOI	10.1016/j.jes.2022.03.0451001-0742
英文摘要	To understand the long-term performance of bioretention systems under sulfamethoxazole (SMX) stress, an unplanted bioretention system (BRS) and two modified BRSs with coconut-shell activated carbon (CAC) and CAC/zero-valent-iron (Fe 0 ) granules (CAC-BRS and Fe/CAC-BRS) were established. Both CAC-BRS and Fe/CAC-BRS significantly outperformed BRS in removing total nitrogen (TN) (CAC-BRS: 82.48%; Fe/CAC-BRS: 78.08%; BRS: 47.51%), total phosphorous (TP) (CAC-BRS: 79.36%; Fe/CAC-BRS: 98.26%; BRS: 41.99%), and SMX (CAC-BRS: 99.74%, Fe/CAC-BRS: 99.80%; BRS: 23.05%) under the long-term SMX exposure (0.8 mg/L, 205 days). High-throughput sequencing revealed that the microbial community structures of the three BRSs shifted greatly in upper zones after SMX exposure. Key functional genera, dominantly Nitrospira, Rhodoplanes, Desulfomicrobium, Geobacter , were identified by combining the functional prediction by the FAPROTAX database with the dominant genera. The higher abundance of nitrogen functional genes ( nirK , nirS and nosZ ) in CAC-BRS and Fe/CAC-BRS might explain the more efficient TN removal in these two systems. Furthermore, the relative abundance of antibiotic-resistant genes (ARGs) sulI and sulII increased in all BRSs along with SMX exposure, suggesting the selection of bacteria containing sul genes. Substrates tended to become reservoirs of sul genes. Also, co-occurrence network analysis revealed distinct potential host genera of ARGs between upper and lower zones. Notably, Fe/CAC-BRS succeeded to reduce the effluent sul genes by 1-2 orders of magnitude, followed by CAC-BRS after 205-day exposure. This study demonstrated that substrate modification was crucial to maintain highly efficient nutrients and SMX removals, and ultimately extend the service life of BRSs in treating SMX wastewater. (c) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000836232900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159854]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Southeast Univ, Sch Civil Engn, Dept Municipal Engn, Nanjing 210096, Peoples R China; 3.Chinese Acad Sci NIGLAS, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China; 4.Southeast Univ, Zhongda Hosp, Sch Med, Dept Gastroenterol, Nanjing 210096, Peoples R China; 5.Univ Regina, Dept Environm Syst Engn, Regina, SK S4S 0A2, Canada
推荐引用方式 GB/T 7714	Xu, Yan,Zhang, Danyi,Xue, Qingju,et al. Long-term nitrogen and phosphorus removal, shifts of functional bacteria and fate of resistance genes in bioretention systems under sulfamethoxazole stress[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2023,126:1-16.
APA	Xu, Yan.,Zhang, Danyi.,Xue, Qingju.,Bu, Chibin.,Wang, Yajun.,...&Qin, Qingdong.(2023).Long-term nitrogen and phosphorus removal, shifts of functional bacteria and fate of resistance genes in bioretention systems under sulfamethoxazole stress.JOURNAL OF ENVIRONMENTAL SCIENCES,126,1-16.
MLA	Xu, Yan,et al."Long-term nitrogen and phosphorus removal, shifts of functional bacteria and fate of resistance genes in bioretention systems under sulfamethoxazole stress".JOURNAL OF ENVIRONMENTAL SCIENCES 126(2023):1-16.