Impact of fuel sulfur regulations on carbonaceous particle emission from a marine engine

Autor: Martin Bauer, Hendryk Czech, Lukas Anders, Johannes Passig, Uwe Etzien, Jan Bendl, Thorsten Streibel, Thomas W. Adam, Bert Buchholz, Ralf Zimmermann
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Climate and Atmospheric Science, Vol 7, Iss 1, Pp 1-8 (2024)
Druh dokumentu: article
ISSN: 2397-3722
DOI: 10.1038/s41612-024-00838-4
Popis: Abstract Ship traffic substantially contributes to air pollution, thus affecting climate and human health. Recently introduced regulations by the International Maritime Organization (IMO) on the fuel sulfur content (FSC) caused a shift in marine fuel onsumption from heavy fuel oils (HFO) to diesel-like distillate fuels, but also to alternative hybrid fuels and the operation of sulfur scrubbers. Using multi-wavelength thermal-optical carbon analysis (MW-TOCA), our study provides emission factors (EF) of carbonaceous aerosol particles and link the fuel composition to features observed in the soot microstructure, which may be exploited in online monitoring by single-particle mass spectrometry (SPMS). Particulate matter from distillate fuels absorbs stronger light of the visible UV and near-infrared range than HFO. However, Simple Forcing Efficiency (SFE) of absorption weighted by EF of total carbon compensated the effect, leading to a net reduction by >50% when changing form HFO to distillate fuels.
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