Effects of oxygenated fuel blends on carbonaceous particulate composition and particle size distributions from a stationary diesel engine

•Oxygenated fuel blends influence particulate composition and size distributions.•They reduced EC and DPM emissions with butanol being the most effective.•They showed different effects on counts of nanoparticles and lager particles.•Both the oxygen content and the type of oxygenates affect DPM characteristics.•The change in thermo-physical properties affects the level of DPM emissions.