In order to comply with increasingly stringent emission regulations and ensure clean air, wall-flow particulate filters are predominantly used in exhaust gas aftertreatment systems of combustion engines to remove reactive soot and inert ash particles from exhaust gases. These filters consist of parallel porous channels with alternately closed ends, effectively separating particles by forming a layer on the filter surface. However, the accumulated particulate layer increases the pressure drop across the filter, requiring periodic filter regeneration. During regeneration, soot oxidation breaks up the particulate layer, while resuspension and transport of individual agglomerates can occur. These phenomena are influenced by gas temperature and velocity, as well as by the dispersity and reactivity of the soot particles. Renewable and biomass based fuels can produce different types of soot with different reactivities and dispersities. Therefore, this study focuses on the influences of soot dispersity and reactivity by varying the reactive particle system. A model wall-flow filter channel is used for the investigation, enabling the observation of the layer break-up and detachment of particle structures from the filter surface over the entire channel length using a high-speed camera operating at 1000 fps. Recordings reveal significant differences in the behavior of the different soot types. Image analysis provides insights into the visual layer break-up, evolution of structure sizes, detachment dynamics, agglomerate velocities, and the spatial and temporal distribution of detachment events. General parameters, such as regeneration time and pressure drop, further characterize the regeneration process. The results provide insights into the detachment and rearrangement behavior of reactive particle structures with varying dispersities and reactivities in wall-flow filters, demonstrating that these characteristics can significantly influence the regeneration process.