Document Type : Research Paper


Energy and Renewable Energies Technology Center, University of Technology - Iraq


Understanding the size and morphological properties of particulate matter (PM) is essential to improve analysis of the process of PM formation in diesel engines. These will help to reduce undesirable environmental impact and health effects. A scanning mobility particle sizer (SMPS) and thermal gravimetric analysis (TGA) were used to study the changes in size characteristics of PM/soot and soot reactivity. Furthermore, improve the oxidation of soot particles in diesel engines is necessary under the range of different fuel combustions. Oxygenated fuels (e.g., ethanol blend, E10 and butanol blend, B16) were used in this experimental study to show how insignificant changes in morphological characteristics and activity of PM.
The oxidation and activation energy of PM was achieved at the lower temperature from the combustion of oxygenated fuels compared with diesel fuel combustion. Besides, it was found that both the size of soot particulate and the number of primary particles are reduced with increasing the oxygen content in oxygenated fuels than the diesel fuel. The shape of primary soot particle for PM is a bit more spherical in the case of diesel fuel than to the oxygenated fuels.


Main Subjects

[1] H. Burtscher, “Physical characterization of particulate
emissions from diesel engines: A review,” Journal of
Aerosol Science, 36, p. 896-932, 2015.
]2[ Y.F. Xing, Y.H. Xu, M.H. Shi, Y.X. Lian, “The
impact of PM2. 5 on the human respiratory system,”
Journal of thoracic disease, 8, 1, p. E69, 2016.
]5[ M.A. Fayad, A. Tsolakis, D. Fernández-Rodríguez,
J.M. Herreros, F.J. Martos, M. Lapuerta, “Manipulating
modern diesel engine particulate emission characteristics
through butanol fuel blending and fuel injection strategies
for efficient diesel oxidation catalysts,” Appl. Energ., 190,
p. 490-500, 2017.
]4[ S.S. Gill, G.S. Chatha, A. Tsolakis, “Analysis of
reformed EGR on the performance of a diesel particulate
filter,” Int. J. Hydrogen Energy, 36, 16, p. 10089-10099,
]3[ B.S. Haynes, H.G.G. Wagner, “Soot formation”,
Prog. Energy Combust SCI, 7, p. 229-73, 1981.
]3[ C.D. Rakopoulos, D.T. Hountalas, T.C. Zannis,
“Operational and environmental evaluation of diesel
engines burning oxygen-enriched intake air or oxygenenriched fuels: a review,” SAE Technical Paper, p. 01-
2924, 2004.
]3[ H.L. Fang, and M.J. Lance, “Influence of Soot
Surface Changes on DPF Regeneration. SAE Technical
Paper, p. 01-3043, 2004.
]8[ D. Fino, S. Bensaid, M. Piumetti, N. Russo, “A
review on the catalytic combustion of soot in diesel
particulate filters for automotive applications: from powder
catalysts to structured reactors,” Applied Catalysis A:
General, 509: p. 75-96, 2016.
]9[ K.O. Lee, R. Cole, R. Sekar, M.Y. Choi, J. Kang, C.
Bae, “Detailed characterization of morphology and
dimensions of diesel particulates via thermophoretic
sampling,” SAE Technical Paper, 2001.
]01[ J. Zhu, K. Lee, A. Panov, J. Akers, C. Habeger, “An
investigation of particulate morphology, microstructures,
and fractal geometry for a diesel engine-simulating
combustor,” SAE transactions, p. 2062-2069, 2004.
]00[ K. Al-Qurashi, A.L. Boehman, “Impact of exhaust
gas recirculation (EGR) on the oxidative reactivity of
diesel engine soot,” Combustion and Flame, 155, p. 675-
695, 2008.
]02[ J. Song, M. Alam, A.L. Boehman, U. Kim,
“Examination of the oxidation behaviour of biodiesel
soot,” Combustion and Flame, 146, p. 589-604, 2006.
]05[ A. Setiabudi, M. Makkee, J.A. Moulijn, “The role of
NO2 and O2 in the accelerated combustion of soot in diesel
exhaust gases,” Applied Catalysis B: Environmental, 50, 3,
p. 185-194, 2004.
]04[ J.O. Müller, D.S. Su, R.E. Jenthoft, J. Kröhnert, R.
Schlögl, “Morphology-controlled reactivity of
carbonaceous materials towards oxidation,” Catalyst
Today, 102-103, p. 259-265, 2005.
]03[ S.H. Kim, R.A. Fletcher, M.R. Zachariah,
“Understanding the difference in oxidative properties
between flame and diesel soot nanoparticles: The role of
metals,” Environmental science & technology, 39, 11, p.
4021-4026, 2005.
]03[ A. Yezerets, N.W. Currier, H.A. Eadler,
“Experimental determination of the kinetics of diesel soot
oxidation by O2-modeling consequences,” SAE Technical
Paper, 2003.
]03[ T. Ishiguro, N. Suzuki, Y. Fujitani, H. Morimoto,
“Microstructural Changes of Diesel Soot during Oxidation,
Combustion and Flame, 85, 1-2, p. 1-6, 1991.
]08[ E. Sukjit, J.M. Herreros, K.D. Dearn, R. GarciaContreras, A. Tsolakis, “The effect of the addition of
individual methyl esters on the combustion and emissions
of ethanol and butanol -diesel blends,” Energy, 42, 1, p.
364-374, 2012.
]09[ E. Sukjit, J.M. Herreros, J. Piaszyk, K.D. Dearn, A.
Tsolakis, “Finding synergies in fuels properties for the
design of renewable fuels–Hydroxylated biodiesel effects
on butanol-diesel blends,” Environ. Sci. Tech., 47, 7, p.
3535-3542, 2013.
]21[ M.A. Fayad, “Effect of renewable fuel and injection
strategies on combustion characteristics and gaseous
emissions in diesel engines. Energy Sources, Part A:
Recovery,” Utilization, and Environmental Effects, p. 1-11,
]20[ D.C. Rakopoulos, C.D. Rakopoulos, E.G. Giakoumis,
A.M. Dimaratos, D.C. Kyritsis, “Effects of butanol–diesel
fuel blends on the performance and emissions of a highspeed DI diesel engine,” Energy Conversion and
Management, 51, p. 1989-1997, 2010.
]22[ C.D. Rakopoulos, A.M. Dimaratos, E.G. Giakoumis,
D.C. & Rakopoulos, “Investigating the emissions during
acceleration of a turbocharged diesel engine operating with
bio-diesel or n-butanol diesel fuel blends,” Energy 35, 12,
p. 5173-84, 2010.
]25[ M.A. Fayad, D. Fernández-Rodríguez, J.M. Herreros,
M. Lapuerta, A. Tsolakis, “Interactions between
aftertreatment systems architecture and combustion of
oxygenated fuels for improved low temperature catalysts
activity,” Fuel, 229, p. 189-197, 2018.
]24[ P. Pepiot-Desjardins, H. Pistch, R. Malhotra, S.R.
Kirby, A.L. Boehman, “Structural group analysis for soot
reduction tendency of oxygenated fuels,” Combustion and
Flame, 154, p. 191-205, 2008.
]23[ W.J. Lee, F.K. Wangi, W.H. Chen, S.L. Lin, Y.
Fukushima, et al., “Assessment of energy performance and
air pollutant emissions in a diesel engine generator fueled
with water-containing ethanol-biodiesel-diesel blend of
fuels,” Energy, 36, 9, p. 5591-9, 2011.
]23[ Z. Zhang, R. Balasubramanian, “Effects of
oxygenated fuel blends on carbonaceous particulate
composition and particle size distributions from a
stationary diesel engine,” Fuel, 141, p. 1-8, 2015.
]23[ M.A. Fayad, J.M. Herreros, F.J. Martos, A. Tsolakis,
“Role of Alternative Fuels on Particulate Matter (PM)
Characteristics and Influence of the Diesel Oxidation
Catalyst,” Environ. Sci. Tech., 49, 19, p. 11967-11973,
]28[ H. An, W. Yang, J. Li, D. Zhou, “Modeling study of
oxygenated fuels on diesel combustion: Effects of oxygen
concentration, cetane number and C/H ratio,” Energy
Conversion and Management, 90, p. 261-271, 2015.
]29[ C.J. Mueller, W.J. Pitz, L.M. Pickett, G.C. Martin,
D.L. Siebers, C.K. Westbrook, “Effects of oxygenates on
soot processes in DI diesel engines: Experiments and
numerical simulations,” SAE Technical Paper, p. 01-1791,
]51[ C.E. Dumitrescu, C.J. Mueller, E. Kurtz,
“Investigation of a tripropylene-glycol monomethyl ether
and diesel blend for soot-free combustion in an optical
direct-injection diesel engine,” Applied Thermal
Engineering, 101, p. 639-646, 2016.
]50[ C.K. Westbrook, W.J. Pitz, and H.J. Curran,
“Chemical kinetic modeling study of the effects of
oxygenated hydrocarbons on soot emissions from diesel
engines,” J. Phys. Chem. A, 110, 21, p. 6912-6922, 2006.
]52[ S.S. Gill, A. Tsolakis, J.M. Herreros, A.P.E. York,
“Diesel emissions improvements through the use of
biodiesel or oxygenated blending components,” Fuel, 95,
p. 578−586, 2011.
]55[ E.J. Barrientos, “Impact of Oxygenated Fuels on
Sooting Tendency and Soot Oxidative Reactivity with
Application to Biofuels,” [Ph.D. thesis]. 2014.
]54[ M. Lapuerta, M. Herreros, J.M. Lyons, L. Lisbeth,
García-Contreras, Reyes, Briceño, Yolanda, “Effect of the
alcohol type used in the production of waste cooking oil
biodiesel on diesel performance and emissions,” Fuel, 87,
15, p. 3161-3169, 2008.
]53[ M. Lapuerta, F. Oliva, J.R. Agudelo, A.L. Boehman,
“Effect of fuel on the soot nanostructure and consequences
on loading and regeneration of diesel particulate filters,”
Combustion and Flame, 159, 2, p. 844-853, 2012.
]53[ O.P. Bhardwaj, B. Lüers, B. Holderbaum, T. Koerfer,
S. Pischinger and M. Honkanen, “Utilization of HVO fuel
properties in a high efficiency combustion system: Part 2:
Relationship of soot characteristics with its oxidation
behavior in DPF,” SAE International Journal of Fuels and
Lubricants, 7, 2014-01-2846, p. 979-994, 2014.
]53[ K.K. Park, P.H. McMurry, “Structural properties of
diesel exhaust particles measured by transmission electron
microscopy (TEM): Relationships to particle mass and
mobility,” Aerosol Science and Technology, 38, 9, p. 881-
889, 2004.
]58[ J.J. Hwang, C. Bae, “Particulate morphology of waste
cooking oil biodiesel and diesel in a heavy duty diesel engine,” in International Conference on Optical Particle
Characterization (OPC 2014), International Society for
Optics and Photonics, 2014.
]59[ L. Qu, Z. Wang, H. Hu, X. Li, Y. Zhao, “Effects of
butanol on components and morphology of particles
emitted by diesel engines,” Research of Environmental
Sciences, 28, 10, p. 1518-1523, 2015.