Destruction and formation of PCDD/Fs in a fluidised bed combustor co-incinerating automotive shredder residue with refuse derived fuel and wastewater treatment sludge

► ASR was added to the usual waste feed (RDF and sludge) of a full scale FBC. ► Comparison of fingerprints confirmed that PCDD/Fs in waste mix are destroyed during combustion. ► PCDD/Fs found in fly ash, FGCR and flue gas are newly formed by de novo synthesis. ► Addition of ASR increased the Cu-concentration in the fly ash and FGCR. ► The total PCDD/F output (in TEQ) did not increase significantly when ASR was co-incinerated.