Biodiesel is known to be challenging fuel. Blending it with high-sulphuric fossil diesel leads to a win-win situation; the oxidation stability of biodiesel enhances while the total sulphur content decreases. The latter is beneficial for the environment.
“For environmental reasons, the sulphur content of fuels has been reduced for several years. The chemical properties of sulphur seem to enhance the stability of biodiesels. The sulphur has the same role in plants and living beings but the effect it has on biofuels has not been studied before as detailed as in this thesis”, says Katriina Sirviö who defends her doctoral thesis at the University of Vaasa.