Micro- and Nanostructural Characteristics of Particles Before and After an Exhaust Gas Recirculation System Scrubber
| Autor: | Jannik Pedersen, Karsten Fuglsang, K. Lieke, Thomas Rosenørn, David Larsson, Merete Bilde, Jens Kling |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Lieke, K I, Rosenørn, T, Pedersen, J, Larsson, D, Kling, J, Fuglsang, K & Bilde, M 2013, ' Micro-and Nanostructural Characteristics of Particles Before and After an Exhaust Gas Recirculation System Scrubber ', Aerosol Science and Technology, vol. 47, no. 9, pp. 1038-1046 . https://doi.org/10.1080/02786826.2013.813012 |
| ISSN: | 1521-7388 0278-6826 |
| DOI: | 10.1080/02786826.2013.813012 |
| Popis: | This work provides insight into the morphology and mixing state of submicron particles in diesel exhaust from a ship engine with an exhaust gas recirculation scrubber. Particles from this low-speed ship engine on test bed were collected using a microinertial impactor with transmission electron microscopy (TEM) grids on two stages. Micro- and nanostructural characteristics of single particles were studied by TEM. Image analysis was carried out on overview and high-resolution images, revealing influence of the exhaust gas treatment (scrubber) on the particle morphology and mixing state. Soot agglomerates were found to be collapsed after scrubber, reflected by their change in fractal dimension (Df ) from 1.88 to 2.13. Soot was predominantly found internally mixed with other components, with a higher degree of internal mixing observed after scrubber. Soot nanostructural characteristics on the near atomic scale such as layer distance, lamella length, and tortuosity were not observed to be influenced by the scr... |
| Databáze: | OpenAIRE |
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