Although incineration of
the waste for disposal is not recommended and the caloric value is
low, calcium (calcium carbonate and calcium sulfate) can be used to reduce
air emissions by capturing sulfur. This method is used
in the combustion of culm and low-grade/high sulfur coals. Newer
clean coal combustion technologies also makes better use of low-Btu
Pending an analysis, the
material may also have application as a soil amendment, for coal ash
stabilization, or as a clean-fill material. The polyester resin
component may be problematic relative to beneficial use of the waste but if you
don't take a good look you may never know.
I did some research into fiber
reinforced plastics recycling in 2004. I looked back through some of the
journal articles I reviewed and I think I found some useful
The article states that SMC contains large amounts of
inorganic material (fiberglass and CaCO3). It lists SMC's caloric value
at: 6.7 MJ/kg or 2881 BTU/lb. This particular article also states that
this value is low and that incineration is not an appropriate method for
disposal. Of course, your client's SMC may have a different ratio of
resin to reinforcement and filler.
The journal is called "Fuel" and the
article is titled, "Recycling by pyrolysis of thermoset composites:
characteristics of the liquid and gaseous fuels obtained." It was
published in 2000, vol. 79, pages 897-902 in the journal "Fuel." The
authors were A. Torres, I de Marco, B.M. Caballero, M.F. Laresgoiti, et.
I hope that helps.
Kyle Bartholomew -
Would greatly appreciate any information about the caloric
value (BTUs/lb) of sheet molding compound (SMC). This is a fiberglass
reinforced, thermosetting polyester resin. It's used in the manufacture of
auto parts, small off-road vehicles, and personal watercraft. My client
wants to avoid landfilling and I thought a WtE facility might be able to use
it. Thanks very much.
Pollution Prevention Assistance Division
Georgia DNR www.p2ad.org
7 MLK Jr. Dr., Suite 450, Atlanta GA 30334
Waste is a resource in the wrong
There is no waste in Nature
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University of Minnesota
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