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
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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). |
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