Particle emission rates during electrostatic spray deposition of TiO2 nanoparticle-based photoactive coating
| Autor: | Ilse Tuinman, Tareq Hussein, Antti Joonas Koivisto, Ismo K. Koponen, Keld Alstrup Jensen, Alexander C. Ø. Jensen, Marcus Levin, Kirsten Inga Kling, Asger W. Nørgaard, Jens Kling, Hans Christian Budtz |
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| Rok vydání: | 2018 |
| Předmět: |
Electrostatic spray deposition
Deposition rate Environmental Engineering Materials science Particle number Health Toxicology and Mutagenesis Analytical chemistry Emission rate chemistry.chemical_element 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences Electrostatic spray-assisted vapour deposition Coating Environmental Chemistry Waste Management and Disposal 0105 earth and related environmental sciences 021001 nanoscience & nanotechnology Indoor aerosol modeling Pollution Aerosol Deposition (aerosol physics) chemistry Exposure modelling engineering Particle 0210 nano-technology Carbon Particle deposition |
| Zdroj: | Koivisto, A J, Jensen, A C Ø, Kling, K I, Kling, J, Budtz, H C, Koponen, I K, Tuinman, I, Hussein, T, Jensen, K A, Nørgaard, A W & Levin, M 2017, ' Particle emission rates during electrostatic spray deposition of TiO2 nanoparticle-based photoactive coating ', Journal of Hazardous Materials, vol. 341, pp. 218-227 . https://doi.org/10.1016/j.jhazmat.2017.07.045 |
| ISSN: | 0304-3894 |
| Popis: | Here, we studied the particle release rate during Electrostatic spray deposition of anatase-(TiO2)-based photoactive coating onto tiles and wallpaper using a commercially available electrostatic spray device. Spraying was performed in a 20.3m3 test chamber while measuring concentrations of 5.6nm to 31μm-size particles and volatile organic compounds (VOC), as well as particle deposition onto room surfaces and on the spray gun user hand. The particle emission and deposition rates were quantified using aerosol mass balance modelling. The geometric mean particle number emission rate was 1.9×1010s-1 and the mean mass emission rate was 381μgs-1. The respirable mass emission-rate was 65% lower than observed for the entire measured size-range. The mass emission rates were linearly scalable (±ca. 20%) to the process duration. The particle deposition rates were up to 15h-1 for 2, TiO2 mixed with Cl and/or Ag, TiO2particles coated with carbon, and Ag particles with size ranging from 60 nm to ca. 5 μm. As expected, no significant VOC emissions were observed as a result of spraying. Finally, we provide recommendations for exposure model parameterization. |
| Databáze: | OpenAIRE |
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