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Environmental exposure assessment framework for nanoparticles in solid waste.

Alessio Boldrin1, Steffen Foss Hansen1, Anders Baun1

  • 1Department of Environmental Engineering, Technical University of Denmark, Miljoevej, 2800 Kongens Lyngby, Denmark.

Journal of Nanoparticle Research : an Interdisciplinary Forum for Nanoscale Science and Technology
|June 20, 2014
PubMed
Summary

Assessing engineered nanomaterials (ENMs) in waste is crucial. A new framework evaluates ENM exposure from nanoproducts in waste management, estimating potential environmental release.

Keywords:
Environmental exposureHealth effectsNanomaterialNanowasteQuantificationSolid waste

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Area of Science:

  • Environmental Science
  • Materials Science
  • Nanotechnology

Background:

  • Environmental exposure data for engineered nanomaterials (ENMs) during solid waste management is limited.
  • Engineered nanomaterials are increasingly incorporated into consumer products, raising concerns about their end-of-life fate.

Purpose of the Study:

  • To define nanowaste and present a systematic framework for assessing ENM exposure during waste management.
  • To apply the framework to selected nanoproducts and estimate potential environmental exposure.

Main Methods:

  • Defined nanowaste as waste containing ENMs.
  • Developed a five-step framework: EOL nanoproduct derivation, property evaluation, treatment/transformation assessment, and release/exposure evaluation.
  • Applied the framework to nanosilver textiles, nanoTiO2 sunscreen, and CNT tennis racquets.

Main Results:

  • Estimated potential global environmental exposure of ENMs from the studied products at 0.5–143 Mg/year.
  • Qualitatively assessed exposure as medium for nanosilver textiles and nanoTiO2 sunscreen, and low for CNT tennis racquets.
  • Identified key research challenges including analytical techniques, release mechanisms, quantification, limit values, and data reporting.

Conclusions:

  • The developed framework provides a systematic approach to assess ENM exposure from nanowaste.
  • Further research is needed to address analytical, mechanistic, quantitative, regulatory, and data reporting challenges.
  • Understanding and managing nanowaste is essential for mitigating potential environmental risks associated with ENMs.