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Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport.

Publication ,  Journal Article
Geitner, NK; Bossa, N; Wiesner, MR
Published in: Environmental science & technology
March 2019

Here, we present a model for the prediction of nanoparticle fate in aquatic environments, parametrized using functional assays that take into account conditions of the environmental media and nanoparticle properties. The model was used to explore scenarios for five nanomaterials in a freshwater wetland setting and compared with experimental results obtained in mesocosm studies. Material characteristics used in the model were size, density, dissolution rate constants, and surface attachment efficiencies. Model predictions and experimentally measured removal rate constants from the water column were strongly correlated, with Pearson correlation coefficient 0.993. Further, the model predicted removal rate constants quantitively very close to measured rates. Of particular importance for accurate predictions were two key processes beyond the usual heteroaggregation with suspended solids. These were homoaggregation of nanomaterials and nanomaterial attachment to aquatic plant surfaces. These results highlight the importance of including all relevant aggregation and deposition processes over short time scales for nanoparticle transport, while demonstrating the utility of functional assays for surface attachment as model inputs.

Duke Scholars

Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

March 2019

Volume

53

Issue

6

Start / End Page

3104 / 3109

Related Subject Headings

  • Water Pollutants, Chemical
  • Water
  • Nanostructures
  • Nanoparticles
  • Environmental Sciences
 

Citation

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Geitner, N. K., Bossa, N., & Wiesner, M. R. (2019). Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport. Environmental Science & Technology, 53(6), 3104–3109. https://doi.org/10.1021/acs.est.8b06283
Geitner, Nicholas K., Nathan Bossa, and Mark R. Wiesner. “Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport.Environmental Science & Technology 53, no. 6 (March 2019): 3104–9. https://doi.org/10.1021/acs.est.8b06283.
Geitner NK, Bossa N, Wiesner MR. Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport. Environmental science & technology. 2019 Mar;53(6):3104–9.
Geitner, Nicholas K., et al. “Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport.Environmental Science & Technology, vol. 53, no. 6, Mar. 2019, pp. 3104–09. Epmc, doi:10.1021/acs.est.8b06283.
Geitner NK, Bossa N, Wiesner MR. Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport. Environmental science & technology. 2019 Mar;53(6):3104–3109.
Journal cover image

Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

March 2019

Volume

53

Issue

6

Start / End Page

3104 / 3109

Related Subject Headings

  • Water Pollutants, Chemical
  • Water
  • Nanostructures
  • Nanoparticles
  • Environmental Sciences