Impact of titanium dioxide nanoparticles on the bacterial communities of biological activated carbon filter intended for drinking water treatment
- Authors
- Liu Zhiyuan; Yu Shuili; Heedeung, Park; Yuan Qingbin; Liu Guicai; Li Qi
- Issue Date
- Aug-2016
- Publisher
- SPRINGER HEIDELBERG
- Keywords
- Drinking water treatment; Bacterial community; Titanium dioxide nanoparticle; ATP quantification; Quantitative polymerase chain reaction; 454 pyrosequencing
- Citation
- ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, v.23, no.15, pp.15574 - 15583
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
- Volume
- 23
- Number
- 15
- Start Page
- 15574
- End Page
- 15583
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/87989
- DOI
- 10.1007/s11356-016-6742-x
- ISSN
- 0944-1344
- Abstract
- Titanium dioxide nanoparticles (TiO2 NPs) are inevitably present in the aquatic environment owing to their increasing production and use. However, knowledge of the potential effects of TiO2 NPs on the treatment of drinking water is scarce. Herein, the effects of two types of anatase TiO2 NPs (TP1, 25 nm; TP2, 100 nm) on the bacterial community in a biological activated carbon (BAC) filter were investigated via quantitative polymerase chain reaction (Q-PCR) analysis, ATP quantification, and 454 pyrosequencing analysis. Both TP1 and TP2 significantly inhibited the bacterial ATP level (p < 0.01) and induced a decrease in the abundance of bacterial 16S rDNA gene copies at doses of 0.1 and 100 mg L-1. Simultaneously, the diversity and evenness of the bacterial communities were considerably reduced. The relative abundances of bacteria annotated to OTUs from Nitrospira class and Betaproteobacteria class decreased upon TiO2 NP treatment, whereas those of Bacilli class and Gammaproteobacteria class increased. TiO2 NP size showed a greater effect on the bacterial composition than did the dose based on Bray-Curtis distances. These findings identified negative effects of TiO2 NPs on the bacterial community in the BAC filter. Given the fact that BAC filters are used widely in drinking water treatment plants, these results suggested a potential threat by TiO2 NP to drinking water treatment system.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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