Silver nanoparticles stimulate the proliferation of sulfate reducing bacterium Desulfovibrio vulgaris

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

30 Scopus Citations
View graph of relations

Author(s)

  • Zhaoyu Chen
  • Ji Lu
  • Shu-Hong Gao
  • Min Jin
  • Philip L. Bond
  • Ping Yang
  • Jianhua Guo

Detail(s)

Original languageEnglish
Pages (from-to)163-171
Journal / PublicationWater Research
Volume129
Publication statusPublished - 1 Feb 2018
Externally publishedYes

Abstract

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. © 2017 Elsevier Ltd

Research Area(s)

  • Corrosion, Flow cytometer, Sewer networks, Silver nanoparticle, Sulfate-reducing bacteria

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Silver nanoparticles stimulate the proliferation of sulfate reducing bacterium Desulfovibrio vulgaris. / Chen, Zhaoyu; Lu, Ji; Gao, Shu-Hong et al.
In: Water Research, Vol. 129, 01.02.2018, p. 163-171.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review