Air Emissions from Fuel Made of Used Agricultural Plastics
James W. Garthe, P.E.1, Bruce G. Millerm2, William J. Lamont3, Michael D. Orzolek3
1Department of Agricultural and Biological Engineering, 2The Energy Institute, 3Department of Horticulture
The Pennsylvania State University
University Park, PA 16802
Keywords: Plastic-derived fuel; plastics; polyethylene; combustion; emissions; agricultural energy; fuel
Abstract. For waste agricultural plastics that cannot be economically recycled, high temperature controlled combustion to produce heat is a viable option. A new plastic-derived fuel boiler system has been introduced to the USA from Korea, and is currently being evaluated at the Pennsylvania State University Horticulture Research Farm. It burns pea-sized pellets made from waste mulch film or granules made from rigid plastic items. The hot water is used to heat greenhouses and other structures. In May, 2005, continuous emissions monitoring and stack testing conforming to US EPA standards were conducted by an independent US testing company. Three main groups of pollutants were analyzed: 1) gases (sulfur dioxide, oxides of nitrogen, and carbon monoxide); 2) particulate matter; 3) dioxins / furans. Test results proved that this is an extremely clean burning system in all three groups.
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