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The potential of fly ash to dechlorinate and destroy PCDD, PCDF and PCB was tested under oxygen deficient conditions in the laboratory. Specifically, two types of fly ash were compared, originating either from a fluidized bed incinerator using Ca(OH) 2 spray (FA1), or a stoker incinerator without Ca(OH) 2 impact (FA2).Results from the present study indicate that on FA2 type fly ash,...
OCDD and OCDF spiked silica/graphite based model fly ash containing various copper compounds and metal oxides were thermally treated under oxygen deficient conditions. All copper compounds tested showed a considerable dechlorination/hydrogenation reaction at 260 o C. After 30 min at 340 o C, less than 1% of the spiked OCDD and OCDF was recovered as T 4 CDD/F to OCDD/F. Other...
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