Soot particulates generated from the combustion of renewable diesel fuels produced from hydrotreated vegetable oils have similar oxidation properties and surface structures to those generated from fossil diesel, according to a new study by researchers from Finland and Sweden.

The finding implies that the oxidative aftertreatment devices designed for fossil diesel should work well also with the studied renewable diesel fuel. A paper on the work was published online in the journal Fuel on 16 June.

The team compared conventional fossil diesel fuel and renewable diesel fuel based on hydrotreated vegetable oils (HVO) were compared regarding the oxidation characteristics of the generated soot particulate. The comparison was performed by utilizing a high-temperature oxidation tandem differential mobility analyser in which monodisperse soot aerosol was first selected and then heated in a high-temperature furnace.


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