The Zellcheming Expo (trade fair for the pulp, paper and supplier industry as well as fibre-based materials) took place this year from 25 to 27 June in Frankfurt am Main. In addition to the exhibition with exhibitors, there is also an area where current topics are discussed in the form of workshops and lectures. Our employee Daniel Klüh informed the audience from industry and science about the recycling possibilities of waste sludge within the scope of the Science Flash. The title of the lecture is "Energy instead of landfilling-recycling paths for waste sludge".