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Nanoparticle Release from Thermal Decomposition of Polymer Nanocomposites and the Biological Potential of the Emissions

Mülhopt, S.; Teuscher, N.; Hufnagel, M.; Wingert, N.; Baumann, W.; Hauser, M.; Garcia-Käufer, M.; Schlager, C.; Berger, M.; Krebs, T.; Paur, H.-R.; Gminski, R.; Hartwig, A.; Stapf, D.

Abstract:
Adding nanoparticles to polymers improves the properties significantly, such as UV resistance or even electrical conductivity. The growing use of these composite materials leads to a higher amount in disposals eventually. Within the circular economy there are two ways of handling: the recycling by shredding and reuse and the thermal treatment by combustion in municipal waste incinerators. In both cases there is nearly no information about the behavior of the nanoparticles and possible release scenarios. In this study a laboratory burner is used as a flexible set up to incinerate the polymer nanocomposites. The flue gas containing a complex mixture of combustion gases and particles is characterized by different particle analysers, PAH analysis, VOC analysis and TEM. The biological impact is studied by using a VITROCELL Automated ALI exposure station. Hereby, cells of the adenocarcino cell line A549 as well as a reconstituted bronchial epithelium (MucilAir, Epithelix) were exposed for 4 hours to the aerosols emitted from the combustion process. Within the exposure process, cells were exposed to the native aerosol, an aerosol under conditions to increase particle deposition via high voltage as well as a filtered aerosol, and therefore the sole gaseous phase. ... mehr

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Volltext §
DOI: 10.5445/IR/1000095569
Veröffentlicht am 25.07.2019
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Zugehörige Institution(en) am KIT Institut für Angewandte Biowissenschaften (IAB)
Institut für Technische Chemie (ITC)
Publikationstyp Poster
Jahr 2019
Sprache Englisch
Identifikator KITopen-ID: 1000095569
HGF-Programm 34.14.03 (POF III, LK 01)
Veranstaltung 7th International Symposium on Ultrafine Particles, Air Quality and Climate (2019), Brüssel, Belgien, 15.05.2019 – 16.05.2019
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