Silver nanoparticles stimulate the proliferation of sulfate reducing bacterium Desulfovibrio vulgaris

被引：34

作者：

Chen, Zhaoyu ^{[1
,2
]}

Lu, Ji ^{[1
]}

Gao, Shu-Hong ^{[1
]}

Jin, Min ^{[1
]}

Bond, Philip L. ^{[1
]}

Yang, Ping ^{[2
]}

Yuan, Zhiguo ^{[1
]}

Guo, Jianhua ^{[1
]}

机构：

[1] Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia

[2] Sichuan Univ, Dept Environm Sci & Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

WATER RESEARCH | 2018年 / 129卷

基金：

澳大利亚研究理事会;

关键词：

Silver nanoparticle; Sulfate-reducing bacteria; Corrosion; Flow cytometer; Sewer networks; HYDROGEN-SULFIDE; GROWTH YIELDS; IN-VITRO; TOXICITY; IMPACT; INHIBITION; REDUCTION; PATHWAY; WATER; IONS;

D O I：

10.1016/j.watres.2017.11.021

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The intensive use of silver nanoparticles (AgNPs) in cosmetics and textiles causes their release into sewer networks of urban water systems. Although a few studies have investigated antimicrobial activities of nanoparticles against environmental bacteria, little is known about potential impacts of the released AgNPs on sulfate reducing bacteria in sewers. Here, we investigated the effect of AgNPs on Desulfovibrio vulgaris Hidenborough (D. vulgaris), a typical sulfate-reducing bacterium (SRB) in sewer systems. We found AgNPs stimulated the proliferation of D. vulgaris, rather than exerting inhibitory or biocidal effects. Based on flow cytometer detections, both the cell growth rate and the viable cell ratio of D. vulgaris increased during exposure to AgNPs at concentrations of up to 100 mg/L. The growth stimulation was dependent on the AgNP concentration. These results imply that the presence of AgNPs in sewage may affect SRB abundance in sewer networks. Our findings also shed new lights on the interactions of nanoparticles and bacteria. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：163 / 171

页数：9

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