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Process-generated nanoparticles from ceramic tile sintering: Emissions, exposure and environmental release.

A S Fonseca1, A Maragkidou2, M Viana3

  • 1Institute of Environmental Assessment and Water Research (IDÆA-CSIC), C/ Jordi Girona 18, 08034 Barcelona, Spain; Universidad de Barcelona, Facultad de Química, Martí i Franquès 1-11, 08028 Barcelona, Spain.

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Summary
This summary is machine-generated.

Laser sintering in the ceramic industry generates ultrafine and nanoparticles, posing occupational exposure risks. Emissions depend on temperature and tile composition, exceeding safe limits and potentially impacting the environment.

Keywords:
Indoor airIndustrial laser furnaceNew particle formationOccupational exposureParticle transportUltrafine particles

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Area of Science:

  • Industrial hygiene
  • Materials science
  • Environmental science

Background:

  • The ceramic industry requires process innovation, with laser sintering being a potential advancement.
  • A significant research gap exists in assessing exposure to nanoparticles generated during industrial processes.

Purpose of the Study:

  • To characterize particle formation and release during industrial-scale laser sintering of ceramic tiles.
  • To assess worker exposure to ultrafine and nanoparticles and evaluate environmental release and filtration efficiency.

Main Methods:

  • A tiered measurement strategy was employed in an industrial-scale pilot plant.
  • Particle formation, release mechanisms, personal exposure, and exhaust system transformations were analyzed.

Main Results:

  • Nanoparticle emissions correlated with temperature and tile composition, not laser treatment.
  • New particle formation (<30nm) occurred during thermal treatment, with significant workplace exposure levels detected.
  • Potential environmental release was identified, though the filtration system showed >87% efficiency.

Conclusions:

  • Occupational exposure to ultrafine and nanoparticles during ceramic tile sintering exceeds the nano reference value.
  • Risks to worker health and potential environmental release necessitate further mitigation strategies.
  • Understanding particle dynamics is crucial for safe implementation of advanced ceramic manufacturing technologies.