Reactivity and structure of soot generated at varying biofuel content and engine operating parameters

Since the EU demands the use of renewable energy sources, also in the transport sector, the usage of biodiesel fuels increases continuously. As the physicochemical properties of soot are important for the oxidation behavior during the regeneration of diesel particle filters (DPF) and literature provides contradictory information about the reactivity and the structure of biodiesel soot, the aim of this work was to investigate the reactivity of soot produced by a diesel engine operated with fuels of different biodiesel content at varying engine operating parameters.