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Thermal Stability and Material Balance of Nanomaterials in Waste Incineration

Paur, Hanns-Rudolf; Baumann, Werner; Hauser, Manuela; Lang, I.; Teuscher, N.; Seifert, Helmuth; Stapf, Dieter

Nanostructured materials are widely used to improve the properties of consumer products such as tires, cosmetics, light weight equipment etc. Due to their complex composition these products are hardly recycled and thermal treatment is preferred. In this study we investigated the thermal stability and material balance of nanostructured metal oxides in flames and in an industrial waste incinerator. We studied the size distribution of nanostructured metal oxides (CeO₂, TiO₂, SiO₂) in a flame reactor and in a heated reaction tube. In the premixed ethylene/air flame, nano-structured CeO₂ partly evaporates forming a new particle mode. This is probably due to chemical reactions in the flame. In addition sintering of agglomerates takes place in the flame. In the electrically heated reaction tube however only sintering of the agglomerated nanomaterials is observed. Ceria has a low background in waste incinerators and is therefore a suitable tracer for investigating the fate of nanostructured materials. Low concentrations of Ceria were introduced by a two-phase nozzle into the post-combustion zone of a waste incinerator. By the incineration of coal dust in a burning chamber the Ceria nanoparticles are mainly found in the size range of the fly ash (1 – 10 µm) because of agglomeration. ... mehr

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DOI: 10.5445/IR/1000071658
DOI: 10.1088/1742-6596/838/1/012012
Zitationen: 3
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie (ITC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000071658
HGF-Programm 34.14.03 (POF III, LK 01) Gasreinigung und Aerosol Technologien
Erschienen in Journal of physics / Conference Series
Verlag IOP Publishing
Band 838
Heft 1
Seiten Art.Nr. 012012
Bemerkung zur Veröffentlichung NANOSAFE 2016 : 5th Nanosafe International Conference on Health and Safety Issues Related to Nanomaterials for a Socially Responsible Approach, Grenoble, France, 7-10 November 2016
Nachgewiesen in Scopus
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