The 1st International Workshop on Reacting Particle-Gas Systems took place from 07 to 09 June at the Ruhr-Universität Bochum. The event is organised by the Collaborative Research Centre 287 BULK-REACTION. Dr.-Ing. Cihan Ates and Mr. Joel Arweiler participated in the event and presented their results on the secondary motion of particles in flows. The study is being conducted as a preparatory step for an ongoing project, Hermit. The aim is to develop an AI-enhanced solution for waste recycling on a large scale.