Use of Recycled Polymers for Encapsulation of Radioactive, Hazardous and Mixed Wastes Page: 5 of 30
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ABSTRACT
Polyethylene encapsulation is a waste treatment technology developed at Brookhaven
National Laboratory using thermoplastic polymers to safely and effectively solidify hazardous,
radioactive and mixed wastes for disposal. Over 13 years of development and demonstration with
surrogate wastes as well as actual waste streams on both bench and full scale have shown this to be
a viable and robust technology with wide application. Process development efforts have previously
focused on the use of virgin polymer feedstocks. In order to potentially improve process economics
and serve to lessen the municipal waste burden, recycled polymers were investigated for use as
encapsulating agents. Recycled plastics included low-density polyethylene, linear low-density
polyethylene, high-density polyethylene and polypropylene, and were used as a direct substitute for
or blended together with virgin resin. Impacts on processing and final waste form performance were
examined.iii
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Lagerraaen, P. R. & Kalb, P. D. Use of Recycled Polymers for Encapsulation of Radioactive, Hazardous and Mixed Wastes, report, November 1, 1997; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc712342/m1/5/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.