| Summary: | The use of municipal refuse (RDF) as fuels has
received widespread attention for reason of its energy
equivalence and the increasing lack of available landfill
sites. The principal obstacle to the construction of combustion
facilities is that RDF produces toxic compounds,
including heavy metals and such organic compounds as PCDD
and PCDF.
In this study, the emissions of metal and organic
compounds were investigated under oxygen deficient and
oxygen surplus conditions for the RDF and such high volume
contributors as office papers and magazines. The principal
metal emissions of the RDF were Al, Ca, K, Si, and Zn.
Magazines significantly contribute B, Mg, Mn, Ti emissions,
whereas office papers contributed Ti and Zn emissions. The
metal emissions were not significantly different between
oxygen deficient and oxygen surplus conditions at a
temperature of 750��C.
The combustion of RDF produced a full range of PCDFs
and PCDFs, the source of which was determined to be RDF,
papers, and even untreated wood combustion effluents in the
parts-per-billion range. In contrast to metal emissions,
emission rates were higher under the oxygen surplus
condition than for the oxygen deficient condition and PCDD
and PCDF emissions were significant in relation to the
chloride contents of fuel, rather than by fuel type as was
the case for the large volume contributors.
With the exception of Hg, Se, S, Sr, and Pb, the metal
emissions were largely derived from the particles in the
effluent. === Graduation date: 1993 === Text is slanted on original. Best scan available.
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