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Considerations in analysing elemental carbon from marine engine exhaust using residual, distillate and biofuels

  • Päivi Aakko-Saksa*
  • , Päivi Koponen
  • , Minna Aurela
  • , Hannu Vesala
  • , Pekka Piimäkorpi
  • , Timo Murtonen
  • , Olli Sippula
  • , Hanna Koponen
  • , Panu Karjalainen
  • , Niina Kuittinen
  • , Pavlos Panteliadis
  • , Topi Rönkkö
  • , Hilkka Timonen
  • *Corresponding author for this work
    • Finnish Meteorological Institute (FMI)
    • University of Eastern Finland
    • Tampere University of Technology (TUT)
    • Municipal Health Service of Amsterdam

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Elemental carbon (EC) concentrations in the exhaust of a medium-speed marine engine was evaluated using thermal-optical analysis (TOA). Particulate matter (PM) samples were collected at 75% and 25% engine loads using residual and distillate fuels with sulphur contents of 2.5%, 0.5% and 0.1%, and a biofuel (30% of bio-component). The EC analysis of PM samples from a marine engine proved to be challenging. For example, transformations of structure of the sampled particles in the inert and the oxygen mode were observed for marine engine exhaust samples. The relationship between constituents present in the samples from the marine engine using different fuels, and phenomena observed in the thermograms are discussed. Temperature protocol selection and sample pre-treatment (extractions and drying) affected the reported EC mass. Modifications in the methodology were suggested to increase the accuracy of the analysis. Repeatability and reproducibility of the EC analysis was studied in the round-robin of three laboratories.

    Original languageEnglish
    Pages (from-to)191-204
    JournalJournal of Aerosol Science
    Volume126
    DOIs
    Publication statusPublished - 1 Dec 2018
    MoE publication typeNot Eligible

    Funding

    This work was supported by Tekes (the Finnish Funding Agency for Technology and Innovation , Finland), Grant 40356/14 , Trafi ( Finnish Transport Safety Agency ) Grant 17834/2016 and industrial partners in Finland Wärtsilä, Pegasor, Spectral Engines, Gasmet, VG-Shipping, HaminaKotka Satama Oy, Oiltanking Finland Oy and Kine Robotics.

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    Keywords

    • Elemental carbon EC
    • Fuel
    • Marine engine
    • Round-robin
    • Thermal-optical analysis TOA
    • Thermogram

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