Impacts of different nanoparticles on functional bacterial community in   activated sludge

doi:10.1016/j.chemosphere.2013.10.082

CORC > 北京大学 > 城市与环境学院

	Impacts of different nanoparticles on functional bacterial community in activated sludge
	Chen, Jian ; Tang, Yue-Qin ; Li, Yan ; Nie, Yong ; Hou, Linlin ; Li, Xi-Qing ; Wu, Xiao-Lei
刊名	chemosphere
	2014
关键词	Nanoparticles Activated sludge qPCR T-RFLP Functional bacterial community Functional redundancy BIOLOGICAL PHOSPHORUS REMOVAL SPHAEROTILUS-LEPTOTHRIX GROUP SP-NOV. GEN. NOV. SILVER NANOPARTICLES DENITRIFYING BACTERIUM AQUASPIRILLUM-BENGAL MICROBIAL COMMUNITY COMPLETE GENOME WATER
DOI	10.1016/j.chemosphere.2013.10.082
英文摘要	Rapidly developing industry raises concerns about the environmental impacts of nanoparticles, but the effects of inorganic nanoparticles on functional bacterial community in wastewater treatment remain unclear. The discriminated effects of silver nanoparticles (Ag-NP) and zinc oxide nanoparticles (ZnO-NP) in a simulated sequencing batch reactor (SBR) system were therefore evaluated by the RNA-based terminal restricted fragment length polymorphism (T-RFLP), 16S rcDNA gene clone library and real-time reverse transcription-PCR (RT-PCR) analyses. Although the COD and NH4-N removal efficiencies were not or slightly reduced by the addition of ZnO-NP and Ag-NP, the functional bacterial community changed remarkably. The denitrification related species were inhibited by high dosage of ZnO-NP and Ag-NP, including Diaphorobacter species, Thauera species and those in the Sphaerotilus-Leprothrix group. However, the bacteria related to sludge bulking, heavy metal resistant and biosorption were increased, especially by ZnO-NPs treatment, including those closely related to Haliscomenobacter hydrossis, Zoogloea ramigera and Methyloversatilis universalis. In addition, Ag-NP and ZnO-NP treatments influenced the functional bacterial community differently. Increasing of bulking related bacteria may help to compensate the COD removal efficiency and to maintain functional redundancy, but could lead to operation failure of activated sludge system when expose to ZnO-NPs. (c) 2013 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000334084500021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 8; ARTICLE; xli@urban.pku.edu.cn; xiaolei_wu@pku.edu.cn; 141-148; 104
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/153863]
专题	城市与环境学院工学院
推荐引用方式 GB/T 7714	Chen, Jian,Tang, Yue-Qin,Li, Yan,et al. Impacts of different nanoparticles on functional bacterial community in activated sludge[J]. chemosphere,2014.
APA	Chen, Jian.,Tang, Yue-Qin.,Li, Yan.,Nie, Yong.,Hou, Linlin.,...&Wu, Xiao-Lei.(2014).Impacts of different nanoparticles on functional bacterial community in activated sludge.chemosphere.
MLA	Chen, Jian,et al."Impacts of different nanoparticles on functional bacterial community in activated sludge".chemosphere (2014).