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Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment.

Publication ,  Journal Article
Barton, LE; Auffan, M; Olivi, L; Bottero, J-Y; Wiesner, MR
Published in: Environmental pollution (Barking, Essex : 1987)
August 2015

Wastewater Treatment Plants (WWTPs) are a key pathway by which nanoparticles (NPs) enter the environment following release from NP-enabled products. This work considers the fate and exposure of CeO2 NPs in WWTPs in a two-step process of heteroaggregation with bacteria followed by the subsequent reduction of Ce(IV) to Ce(III). Measurements of NP association with solids in sludge were combined with experimental estimates of reduction rate constants for CeO2 NPs in Monte Carlo simulations to predict the concentrations and speciation of Ce in WWTP effluents and biosolids. Experiments indicated preferential accumulation of CeO2 NPs in biosolids where reductive transformation would occur. Surface functionalization was observed to impact both the distribution coefficient and the rates of transformation. The relative affinity of CeO2 NPs for bacterial suspensions in sludge appears to explain differences in the observed rates of Ce reduction for the two types of CeO2 NPs studied.

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Published In

Environmental pollution (Barking, Essex : 1987)

DOI

EISSN

1873-6424

ISSN

0269-7491

Publication Date

August 2015

Volume

203

Start / End Page

122 / 129

Related Subject Headings

  • Waste Disposal, Fluid
  • Sewage
  • Nanoparticles
  • Monte Carlo Method
  • Environmental Sciences
  • Cerium
  • Bacteria
 

Citation

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Barton, L. E., Auffan, M., Olivi, L., Bottero, J.-Y., & Wiesner, M. R. (2015). Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment. Environmental Pollution (Barking, Essex : 1987), 203, 122–129. https://doi.org/10.1016/j.envpol.2015.03.035
Barton, Lauren E., Melanie Auffan, Luca Olivi, Jean-Yves Bottero, and Mark R. Wiesner. “Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment.Environmental Pollution (Barking, Essex : 1987) 203 (August 2015): 122–29. https://doi.org/10.1016/j.envpol.2015.03.035.
Barton LE, Auffan M, Olivi L, Bottero J-Y, Wiesner MR. Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment. Environmental pollution (Barking, Essex : 1987). 2015 Aug;203:122–9.
Barton, Lauren E., et al. “Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment.Environmental Pollution (Barking, Essex : 1987), vol. 203, Aug. 2015, pp. 122–29. Epmc, doi:10.1016/j.envpol.2015.03.035.
Barton LE, Auffan M, Olivi L, Bottero J-Y, Wiesner MR. Heteroaggregation, transformation and fate of CeO₂ nanoparticles in wastewater treatment. Environmental pollution (Barking, Essex : 1987). 2015 Aug;203:122–129.
Journal cover image

Published In

Environmental pollution (Barking, Essex : 1987)

DOI

EISSN

1873-6424

ISSN

0269-7491

Publication Date

August 2015

Volume

203

Start / End Page

122 / 129

Related Subject Headings

  • Waste Disposal, Fluid
  • Sewage
  • Nanoparticles
  • Monte Carlo Method
  • Environmental Sciences
  • Cerium
  • Bacteria