The UNREAL (Unveiling nucleation mechanism in aircraft engine exhaust and its link with fuel composition) project: Results from simulation chamber and reactor experiments

Ismael K. Ortega (1) , Mathieu Cazaunau (2) , A. Farah (3) , A. Singh (4) , Nicolas Karoski (5) , Rafael Barrellon-Vernay (1) , Jonathan Duplissy (6) , A. Bergé (2) , Joel Brito (3) , A. Berthier (1, 7) , David Delhaye (1) , Jean-Eudes Petit (4) , Alexandre Albinet (5) , M. Sicard (1) , Y. Carpentier (7) , B. Raepsaet (1) , F. Ser (1) , M. Kulmala (6) , Véronique Riffault (3) , Cristian Focsa (7) , Jean-Francois Doussin (2)

1 DMPE, ONERA, Université Paris Saclay [Palaiseau]
2 LISA (UMR_7583) - Laboratoire Interuniversitaire des Systèmes Atmosphériques
3 IMT Nord Europe - Ecole nationale supérieure Mines-Télécom Lille Douai
4 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
5 INERIS - Institut National de l'Environnement Industriel et des Risques
6 HIP - Helsinki Institute of Physics
7 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523

Aviation emissions are not limited to greenhouse gases like CO2 but include other gases as well, such as nitrogen oxides (NOx) or sulfur oxides (SOx) and volatile and non-volatile particulate matter (vPM and nvPM respectively). Sulfuric acid formed in the engine exhaust seems to be linked to the formation of vPM. However, the amount of sulfur present in the fuel converted to sulfuric acid in the exhaust is too small to explain the amount of vPM observed (Vancassel et al. 2004). Organic compounds emitted by the engine are among the most suitable candidates to explain the formation of vPM in the engine exhaust (Sorokin et al. 2001), but the molecular mechanisms behind this phenomenon are still unknown.

Domains: Environmental Sciences

Ismael K. Ortega, Mathieu Cazaunau, A. Farah, A. Singh, Nicolas Karoski, et al.. The UNREAL (Unveiling nucleation mechanism in aircraft engine exhaust and its link with fuel composition) project: Results from simulation chamber and reactor experiments. European Aerosol Conference (EAC 2021), Aug 2021, Online, United Kingdom. ⟨ineris-03547543⟩