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Effects of exogenous N-acyl-homoserine lactones on nutrient removal, sludge properties and microbial community structures during activated sludge process
Yan, Xu; Zheng, Shikan; Huo, Zhaoman; Shi, Bowen; Huang, Jiajun; Yang, Jie; Ma, Jiahui; Han, Yunping; Wang, Yan; Cheng, Ke; Feng, Jinglan; Sun, Jianhui
2020-09
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume255Pages:1-12
AbstractThis study investigated the effects of exogenous N-acyl-homoserine lactone (AHL) signal molecules, N-hexanoyl-L-homoserine lactone (C6-HSL) and N-octanoyl-(L)-homoserine lactone (C8-HSL), on treatment performance, sludge properties and microbial community structures in activated sludge systems. Results showed that the nitrification and denitrification efficiencies were enhanced with the addition of signal molecules. The particle size, irregularity, and internal mass transfer resistance of activated sludge flocs (ASFs) increased, primarily because dosing AHLs led to a content increase and chemical composition variation of extracellular polymeric substances (EPS) in sludge. Microbial analysis indicated an increase in both the bacterial richness and diversity of the systems. The relative abundances of the key functional groups, including bacteria related to C and N removal and EPS production, varied correspondingly. This study presents an insight into the comprehensive understanding of the effects of AHL-based quorum sensing on activated sludge treatment process. (C) 2020 Elsevier Ltd. All rights reserved.
Department水污染控制实验室
KeywordQuorum sensing N-acyl-homoserine lactone Sludge properties Microbial community Activated sludge process
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45028
Collection水污染控制实验室
Recommended Citation
GB/T 7714
Yan, Xu,Zheng, Shikan,Huo, Zhaoman,et al. Effects of exogenous N-acyl-homoserine lactones on nutrient removal, sludge properties and microbial community structures during activated sludge process[J]. CHEMOSPHERE,2020,255:1-12.
APA Yan, Xu.,Zheng, Shikan.,Huo, Zhaoman.,Shi, Bowen.,Huang, Jiajun.,...&Sun, Jianhui.(2020).Effects of exogenous N-acyl-homoserine lactones on nutrient removal, sludge properties and microbial community structures during activated sludge process.CHEMOSPHERE,255,1-12.
MLA Yan, Xu,et al."Effects of exogenous N-acyl-homoserine lactones on nutrient removal, sludge properties and microbial community structures during activated sludge process".CHEMOSPHERE 255(2020):1-12.
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