Mechanism of oxytetracycline removal by aerobic granular sludge in SBR

doi:10.1016/j.watres.2019.06.014

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	Mechanism of oxytetracycline removal by aerobic granular sludge in SBR
	Wang, Xiaochun 1; Shen, Jimin 1; Kang, Jing 1; Zhao, Xia 2; Chen, Zhonglin 1
刊名	WATER RESEARCH
	2019-09-15
卷号	161 页码:308-318
关键词	Aerobic granular sludge Biodegradation mechanism Enzymes Microbial community Oxytetracycline
ISSN号	0043-1354
DOI	10.1016/j.watres.2019.06.014
英文摘要	In this study, oxytetracycline (OTC) as a target pollutant in swine wastewater was removed by aerobic granular sludge (AGS). The removal rate of 300 mu g/L OTC in aerobic granular sludge sequencing batch reactor (AGSBR) increased to 88.00% in 33 days and maintained stable. The chemical oxygen demand (COD), ammonium nitrogen (NH4+-N) and total phosphorus (TP) in wastewater were also efficiently removed. The removal of OTC mainly depended on the adsorption and biodegradation of AGS, and the biodegradation was increased obviously after AGS adaptation to OTC. The degradation products of OTC were analyzed by mass spectrometry. The analysis of metagenome sequencing revealed that the enzymes, such as glycosyl transferases (GTs), polysaccharide lyases (PLs) and auxiliary activities (AAs), may play an important role in the removal of OTC. The Lefse analysis showed that the Flavobacteriia, Flavobacteriales, Cryomorphaceae and Fluviicola were four kinds of microbes with significant difference in OTC feed reactor, which are considered to be drug-resistant bacteria in AGSBR. Furthermore, the dynamics of microbial community changed significantly at three levels, including the enrichment of drug-resistant microorganisms and the microorganisms that gradually reduced or even disappeared under the pressure of OTC. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Provincial Natural Science Foundation of Gansu[1506RJZA102]
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000475999400032
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31572]
专题	石油化工学院
通讯作者	Kang, Jing; Chen, Zhonglin
作者单位	1.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiaochun,Shen, Jimin,Kang, Jing,et al. Mechanism of oxytetracycline removal by aerobic granular sludge in SBR[J]. WATER RESEARCH,2019,161:308-318.
APA	Wang, Xiaochun,Shen, Jimin,Kang, Jing,Zhao, Xia,&Chen, Zhonglin.(2019).Mechanism of oxytetracycline removal by aerobic granular sludge in SBR.WATER RESEARCH,161,308-318.
MLA	Wang, Xiaochun,et al."Mechanism of oxytetracycline removal by aerobic granular sludge in SBR".WATER RESEARCH 161(2019):308-318.