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Research Article
Shuili Yu
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, China
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2773-9342
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The occurrence of titanium dioxide nanoparticle (TNP), an emerging contaminant, in Taihu Lake of China was investigated. Ti was present at a concentration of 224 ± 59 µg/L in the water source of east Taihu Lake. Approximately 0.19% of the Ti-containing matter was at the nano-scale. Scanning Electron Microscope analysis verified the existence of Ti-containing components, such as TiOX and FeTiOX. Furthermore, Ti K-edge X-ray absorption near-edge structure spectroscopy was used to detect the phase composition of nano-scaled Ti-containing matter. The spectra showed the three characteristic peaks of TiO2 in the samples, suggesting the occurrence of TNP in Taihu Lake. A least-squares linear combination fitting analysis indicated that the TNP concentration in the water source was 0.86 µg/L, with a crystal composition of 0.44 ± 0.1 µg/L amorphous, 0.14 ± 0.03 µg/L anatase and 0.28 ± 0.06 µg/L rutile. The removal performance of the TNP at a full-scale conventional drinking water treatment plant indicated that 58.8% of TNP was removed via coagulation/sediment, sand filtration and disinfection/clear water reservoir. The coagulation/sediment process accounted for approximately 76.6% of the total removed TNP. The finished water contained 0.33 µg/L TNP with a crystal composition of 0.24 ± 0.13 µg/L anatase and 0.09 ± 0.05 µg/L rutile. This study is the first that reported the presence and transport of TNP in a drinking water treatment system.
Keywords
Drinking water treatment, X-ray absorption spectroscopy, Titanium dioxide nanoparticle, Taihu Lake
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View the published article at Environmental Science and Pollution Research.
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Posted 19 Mar, 2021
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See the published version of this preprint at Environmental Science and Pollution Research.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Shuili Yu
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, China
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2773-9342
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at Environmental Science and Pollution Research.
Version 1
Posted 19 Mar, 2021
No community comments so far
Reviewers invited
Invitations sent on 16 Mar, 2021
Reviews received
Received 16 Mar, 2021
Editor invited
On 15 Mar, 2021
First submitted
On 22 Feb, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Environmental Science and Pollution Research.
The occurrence of titanium dioxide nanoparticle (TNP), an emerging contaminant, in Taihu Lake of China was investigated. Ti was present at a concentration of 224 ± 59 µg/L in the water source of east Taihu Lake. Approximately 0.19% of the Ti-containing matter was at the nano-scale. Scanning Electron Microscope analysis verified the existence of Ti-containing components, such as TiOX and FeTiOX. Furthermore, Ti K-edge X-ray absorption near-edge structure spectroscopy was used to detect the phase composition of nano-scaled Ti-containing matter. The spectra showed the three characteristic peaks of TiO2 in the samples, suggesting the occurrence of TNP in Taihu Lake. A least-squares linear combination fitting analysis indicated that the TNP concentration in the water source was 0.86 µg/L, with a crystal composition of 0.44 ± 0.1 µg/L amorphous, 0.14 ± 0.03 µg/L anatase and 0.28 ± 0.06 µg/L rutile. The removal performance of the TNP at a full-scale conventional drinking water treatment plant indicated that 58.8% of TNP was removed via coagulation/sediment, sand filtration and disinfection/clear water reservoir. The coagulation/sediment process accounted for approximately 76.6% of the total removed TNP. The finished water contained 0.33 µg/L TNP with a crystal composition of 0.24 ± 0.13 µg/L anatase and 0.09 ± 0.05 µg/L rutile. This study is the first that reported the presence and transport of TNP in a drinking water treatment system.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
This is a list of supplementary files associated with this preprint. Click to download.
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