Waste Management & Research The Journal for a Sustainable Circular Economy · 1986 · 46 citations · 2 references
EngineeringChemical EngineeringEnvironmental EngineeringPollution ControlPollution ScienceWaste ManagementFabric FiltrationHeavy Metal RemovalWaste IncinerationWaste PreventionWaste ReductionWaste Sector Emissions ReductionDust RemovalFabric FiltersFiltersMercury Emission ControlMercury Emissions ControlMercury PollutionMercury RemovalWaste Incineration Emissions
Mercury in the flue gas from waste incineration is predominantly in the vapour phase at temperatures down to 140 °C. Only a small portion of the mercury is metallic Hg°, most of it is oxidized, which has a high vapour pressure at these gas temperatures. Oxidized mercury is absorbed by fly ash and will be captured on fabric filters. By injecting fly ash and lime before a fabric filter a high degree of collection can be achieved, both for hydrochloric acid and for mercury. Up to 90% of the mercury can become attached to the dust. By optimizing the operation and with efficient dust removal it is therefore possible to limit mercury emissions to less than 0.3 g ton -1 of incinerated waste.
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