PCDD/F reduction in incinerator flue gas by adding urea to RDF feedstock.
The effect of urea on PCDD/F formation in a pilot incinerator was studied by incinerating urea with refuse-derived fuel (RDF) at three concentrations (0.1%, 0.5% and 1.0%, of the fuel feed). A distinct reduction in both PCDD/F and chlorophenol concentrations could be noticed when urea was introduced into the system. Partial-least-square (PLS) analysis of the data showed the importance of certain chlorophenol isomers as PCDD/F precursors, pointing to the possibility that the impact point of the urea inhibitor could be before the precursor molecules, i.e. chlorophenols, have been formed.
Ruokojärvi
P
P
Department of Environmental Sciences, University of Kuopio, Finland. Paivi.Ruokojarvi@uku.fi
Tuppurainen
K
K
Mueller
C
C
Kilpinen
P
P
Ruuskanen
J
J
D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000032:analysis*; D001572:Benzofurans / Q000737:chemistry*; D002733:Chlorophenols / Q000145:classification / Q000378:metabolism; D004785:Environmental Pollutants; D017745:Incineration / Q000379:methods; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012989:Soil Pollutants; D014508:Urea / Q000494:pharmacology; D014866:Waste Products / Q000706:statistics & numerical data
D000393:Air Pollutants; D001572:Benzofurans; D002733:Chlorophenols; D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D011108:Polymers; D012989:Soil Pollutants; D014866:Waste Products; C016068:polychlorodibenzofuran; D014508:Urea