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Physical Characteristics of Particle Emissions from a Medium Speed Ship Engine Fueled with Natural Gas and Low-Sulfur Liquid Fuels

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Physical Characteristics of Particle Emissions from a Medium Speed Ship Engine Fueled with Natural Gas and Low-Sulfur Liquid Fuels. / Alanen, Jenni; Isotalo, Mia; Kuittinen, Niina; Simonen, Pauli; Martikainen, Sampsa; Kuuluvainen, Heino; Honkanen, Mari; Lehtoranta, Kati; Nyyssönen, Sami; Vesala, Hannu; Timonen, Hilkka; Aurela, Minna; Keskinen, Jorma; Rönkkö, Topi.

In: Environmental Science and Technology, Vol. 54, No. 9, 05.05.2020, p. 5376-5384.

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@article{845b87535f65421fa8814af74dfb0ef2,
title = "Physical Characteristics of Particle Emissions from a Medium Speed Ship Engine Fueled with Natural Gas and Low-Sulfur Liquid Fuels",
abstract = "Particle emissions from marine traffic affect significantly air quality in coastal areas and the climate. The particle emissions were studied from a 1.4 MW marine engine operating on low-sulfur fuels natural gas (NG; dual-fuel with diesel pilot), marine gas oil (MGO) and marine diesel oil (MDO). The emitted particles were characterized with respect to particle number (PN) emission factors, PN size distribution down to nanometer scale (1.2-414 nm), volatility, electric charge, morphology, and elemental composition. The size distribution of fresh exhaust particles was bimodal for all the fuels, the nucleation mode highly dominating the soot mode. Total PN emission factors were 2.7 × 1015-7.1 × 1015 #/kWh, the emission being the lowest with NG and the highest with MDO. Liquid fuel combustion generated 4-12 times higher soot mode particle emissions than the NG combustion, and the harbor-area-typical lower engine load (40{\%}) caused higher total PN emissions than the higher load (85{\%}). Nonvolatile particles consisted of nanosized fuel, and spherical lubricating oil core mode particles contained, e.g., calcium as well as agglomerated soot mode particles. Our results indicate the PN emissions from marine engines may remain relatively high regardless of fuel sulfur limits, mostly due to the nanosized particle emissions.",
author = "Jenni Alanen and Mia Isotalo and Niina Kuittinen and Pauli Simonen and Sampsa Martikainen and Heino Kuuluvainen and Mari Honkanen and Kati Lehtoranta and Sami Nyyss{\"o}nen and Hannu Vesala and Hilkka Timonen and Minna Aurela and Jorma Keskinen and Topi R{\"o}nkk{\"o}",
year = "2020",
month = "5",
day = "5",
doi = "10.1021/acs.est.9b06460",
language = "English",
volume = "54",
pages = "5376--5384",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "9",

}

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TY - JOUR

T1 - Physical Characteristics of Particle Emissions from a Medium Speed Ship Engine Fueled with Natural Gas and Low-Sulfur Liquid Fuels

AU - Alanen, Jenni

AU - Isotalo, Mia

AU - Kuittinen, Niina

AU - Simonen, Pauli

AU - Martikainen, Sampsa

AU - Kuuluvainen, Heino

AU - Honkanen, Mari

AU - Lehtoranta, Kati

AU - Nyyssönen, Sami

AU - Vesala, Hannu

AU - Timonen, Hilkka

AU - Aurela, Minna

AU - Keskinen, Jorma

AU - Rönkkö, Topi

PY - 2020/5/5

Y1 - 2020/5/5

N2 - Particle emissions from marine traffic affect significantly air quality in coastal areas and the climate. The particle emissions were studied from a 1.4 MW marine engine operating on low-sulfur fuels natural gas (NG; dual-fuel with diesel pilot), marine gas oil (MGO) and marine diesel oil (MDO). The emitted particles were characterized with respect to particle number (PN) emission factors, PN size distribution down to nanometer scale (1.2-414 nm), volatility, electric charge, morphology, and elemental composition. The size distribution of fresh exhaust particles was bimodal for all the fuels, the nucleation mode highly dominating the soot mode. Total PN emission factors were 2.7 × 1015-7.1 × 1015 #/kWh, the emission being the lowest with NG and the highest with MDO. Liquid fuel combustion generated 4-12 times higher soot mode particle emissions than the NG combustion, and the harbor-area-typical lower engine load (40%) caused higher total PN emissions than the higher load (85%). Nonvolatile particles consisted of nanosized fuel, and spherical lubricating oil core mode particles contained, e.g., calcium as well as agglomerated soot mode particles. Our results indicate the PN emissions from marine engines may remain relatively high regardless of fuel sulfur limits, mostly due to the nanosized particle emissions.

AB - Particle emissions from marine traffic affect significantly air quality in coastal areas and the climate. The particle emissions were studied from a 1.4 MW marine engine operating on low-sulfur fuels natural gas (NG; dual-fuel with diesel pilot), marine gas oil (MGO) and marine diesel oil (MDO). The emitted particles were characterized with respect to particle number (PN) emission factors, PN size distribution down to nanometer scale (1.2-414 nm), volatility, electric charge, morphology, and elemental composition. The size distribution of fresh exhaust particles was bimodal for all the fuels, the nucleation mode highly dominating the soot mode. Total PN emission factors were 2.7 × 1015-7.1 × 1015 #/kWh, the emission being the lowest with NG and the highest with MDO. Liquid fuel combustion generated 4-12 times higher soot mode particle emissions than the NG combustion, and the harbor-area-typical lower engine load (40%) caused higher total PN emissions than the higher load (85%). Nonvolatile particles consisted of nanosized fuel, and spherical lubricating oil core mode particles contained, e.g., calcium as well as agglomerated soot mode particles. Our results indicate the PN emissions from marine engines may remain relatively high regardless of fuel sulfur limits, mostly due to the nanosized particle emissions.

U2 - 10.1021/acs.est.9b06460

DO - 10.1021/acs.est.9b06460

M3 - Article

VL - 54

SP - 5376

EP - 5384

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 9

ER -