Extractability of heavy metals in bottom ash from a medium-size (32 mw) municipal district heating plant by artificial sweat and gastric fluids

Risto P yki 1, Hannu Nurmesniemi2

1 City of Kemi, Valtakatu 26, FI-94100 Kemi, Finland
2 Stora Enso Oyj, Veitsiluoto Mill, FI-94800 Kemi, Finland


The bottom ash investigated in this study was sampled from a 32 MW municipal district heating plant incinerating peat (60 %) and clean bark, wood chips and sawdust (40 %) at a bubbling fluidized bed boiler. The bottom ash has high dry matter content


ash; extraction; fluidized bed boiler; heavy metals; solubility

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