Titre :

Chemical Composition of Diesel/Biodiesel Particulate Exhaust by FTIR Spectroscopy and Mass Spectrometry: Impact of Fuel and Driving Cycle

Auteur(s) :

Popovicheva, Olga B. [Auteur]
D.V. Skobeltsyn Institute of Nuclear Physics [SINP]
Irimiea, Cornelia [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Carpentier, Yvain [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Ortega, Ismael [Auteur]
ONERA - The French Aerospace Lab [Palaiseau]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Kireeva, Elena D. [Auteur]
D.V. Skobeltsyn Institute of Nuclear Physics [SINP]
Shonija, Natalia K. [Auteur]
Lomonosov Moscow State University = Université d'État Lomonossov de Moscou [Moscou] [MSU]
Schwarz, Jaroslav [Auteur]
Institute of Chemical Process Fundamentals [ICPF]
Vojtíšek-Lom, Michal [Auteur]
Czech Technical University in Prague [CTU]
Focsa, Cristian [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la revue :

Aerosol and Air Quality Research

Pagination :

1717-1734

Éditeur :

Taiwan Association for Aerosol Research

Date de publication :

2017

ISSN :

1680-8584

Mot(s)-clé(s) en anglais :

FTIR
PARTICULATE EMISSION
ENVIRONMENTAL POLLUTION
MASS SPECTROMETRY
DIESEL ENGINE

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Milieux fluides et réactifs

Résumé en anglais : [en]

The growing concern about air quality and the impact exhaust particles can have on the environment has resulted in the increased use of alternative fuels. A sampling campaign from a conventional heavy diesel engine operated ...
Lire la suite >The growing concern about air quality and the impact exhaust particles can have on the environment has resulted in the increased use of alternative fuels. A sampling campaign from a conventional heavy diesel engine operated in typical transient cycle or steady-state condition, and running on diesel, 30% biodiesel in diesel, and 100% biodiesel was carried out. The particulate composition was characterized using Fourier Transform Infrared (FTIR) spectroscopy, Two-step Laser Mass Spectrometry (L2MS), Secondary Ion Mass Spectrometry (SIMS), thermo-optical analysis, and capillary electrophoresis. Elemental carbon is demonstrated to decrease from diesel to 100% biodiesel, in agreement with the evolution of aromatic bands and the MS abundance of Cn– fragments, while organic carbon exhibits a constant level irrespective of the working regime. Aliphatic, aromatic, carboxyl, carbonyl, hydroxyl functionalities, and nitro compounds are found to depend on the engine-working regime. Mass spectra are mainly characterized by alkyl fragments (CnH2n+1+), associated to normal and branched alkanes, PAHs and their alkylated derivatives. The addition of biodiesel to diesel changes the particulate composition towards more oxygenated constituents, such as carbonyl groups attributed to methyl ester CH3O+ fragments of unburned biodiesel. Fuel-specific fragments have been identified, such as C3H7O+ for diesel, and C2H3O2+ and CH3O– for biodiesel. Nitrogenized compounds are revealed by -NO2 functionalities and N-containing fragments. Principal Component Analysis (PCA) was successfully applied to discriminate the engine operating conditions, with a higher variance given by the fuel, thus allowing to better evaluate the environmental impacts of alternative energy source emissions.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Physiques et Chimie de l'Environnement Atmosphérique

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL