Heavy metals in wet scrubber residue from a medium-sized (32 MW) municipal district heating plant incinerating wood and peat in a fluidised bed boiler
by Risto Pöykiö; Hannu Nurmesniemi; Olli Dahl
International Journal of Environment and Waste Management (IJEWM), Vol. 10, No. 4, 2012

Abstract: Due to the low total concentrations of heavy metals and extractable compounds, it is recommended that the wet scrubber residue be used as a construction agent instead of being disposed of in landfills. According to five-stage sequential extraction, the highest concentrations of most of the heavy metals occurred in the residual fraction (i.e., HF + HNO₃ + HCl), which means that the heavy metals in the wet scrubber residue are tightly bound to the matrix. This is a favourable phenomenon, if the residue is utilised in earth construction.

Online publication date: Sat, 13-Dec-2014

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