Evaluation of biodiesel on speciated PM2.5, organic compound, ultrafine particle and gaseous emissions from a low-speed EPA Tier II marine diesel engine coupled with DPF, DEP and SCR filter at various loads

Abdulfatah Abdu Yusuf, Freddie L. Inambao and Jeffrey Dankwa Ampah

Energy, 2022, vol. 239, issue PA

Abstract: Most of marine vessels spent longer time during shipping because their routes are not closer to seashore, and emit a wide range of pollutants. These significantly contributes to regional and global pollutant inventories of fine particles (PM2.5) and gaseous emissions, which affects the local air quality. For this, the present work aimed to investigates the effect of biodiesel-diesel oil (B0, B25, and B50) ratios on regulated emissions from EPA Tier II marine propulsion engine at different loads. Experiments were carried out at low engine speed and the corresponding observations were recorded on idling in gear and loads in the ISO 8178–4 E3 duty cycle. PM2.5 emission factors for elemental and organic carbons (EC and OC), organic and inorganic species, gaseous emissions and particle size distribution were also determined. Results showed that EC, OC and rate of aliphatic compounds to polycyclic aromatic hydrocarbons (PAHs) were decrease with increase in loads. At 25% and high loads, much significant decrease in HC and CO emissions were observed with B50, whereas higher NOx emissions were acquired across all biodiesel blend fuels. This was due to the occurrence of bonded oxygen with the absence of aromatics in the biofuels. The size distribution of particles emitted from B25 and B50 evident significant number of ultrafine nuclei at 25% and 50% as compared to other engine loads. With an increase in biodiesel fuel, emissions of metals trace in the fuel were embraced with other metal oxides catalyst to develop multi-metal oxide catalyst. This enhance the catalyst activity to withstand poisoning and improve thermal stability. The emission results were within the EPA certification norms and across biodiesel ratios.

Keywords: Marine vessels; Biodiesel; Gaseous and fine particles; Size distribution; PAHs and trace metals (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:239:y:2022:i:pa:s0360544221020855

DOI: 10.1016/j.energy.2021.121837

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