Presentations from the Final Sympositum of the SLUDGEFFECT research project, "Towards mitigating hazardous substances in sludge and e-waste plastic" The presentations were: 1) SLUDGEFFECT Symposium - Setting the Scene - Hans Peter Arp 2) Sludge Mass Flow in Norway - Heidi Knutsen and Hans Peter Arp 3) Sludge Concentrations and Removal efficiencies in Norwegian WWTPs - Gabriela Castro 4) Sludge Contaminant Mass Flow in Norway - Hans Peter Arp, Heidi Knutsen, Håkon Langberg 5) What happens to PFAS and other contaminants in organic waste when pyrolyzed into biochar? - Erlend Sørmo, Gabriela Castro, Gerard Cornelissen, Junjie Zhang, Alexandros G. Asimakopoulos, Katinka Krahn, Gudny Flatabø, Clara Lade, Hans Peter Arp 6) Eco-toxicological and climate change effects of sludge thermal treatments: Comparison of alternative sludge handling scenarios in Norway - Morales, Marjorie; Arp, Hans Peter H.; Castro, Gabriela; Asimakopoulos, Alexandros G.; Sørmo, Erlend; Peters, Gregory; Cherubini, Francesco 7) Concentrations in WEEE - Gabriela Castro 8) MFA and emissions of microplastic and bisphenols from waste electric and electronic equipment plastic (WEEEP) in Norway - Mari E. Løseth, Heidi Knutsen, Gabriela Castro, Alexandros G. Asimakopoulos, Sarah Hale and Hans Peter H. Arp 9) SLUDGEFFECT -Implementation in a Circular Economy and General Discussion - Hans Peter Arp and Erlend Sørmo