DEVELOPMENT AND DEMONSTRATION OF POLYMER MICROENCAPSULATION OF MIXED WASTE USING KINETIC MIXER PROCESSING

Technical Report · Sat Nov 01 04:00:00 EST 1997

DOI:https://doi.org/10.2172/761002· OSTI ID:761002

LAGERAAEN, P R ^[1]; KALB, P D; MILIAN, L W; ADAMS, J W

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1. BROOKHAVEN NATIONAL LABORATORY

Thermokinetic mixing was investigated as an alternative processing method for polyethylene microencapsulation, a technology well demonstrated for treatment of hazardous, low-level radioactive and low-level mixed wastes. Polyethylene encapsulation by extrusion has been previously shown to be applicable to a wide range of waste types but often pretreatment of the wastes is necessary due to process limitations regarding the maximum waste moisture content and particle size distribution. Development testing was conducted with kinetic mixing in order to demonstrate technology viability and show improved process applicability in these areas. Testing to establish process capabilities and relevant operating parameters was performed with waste surrogates including an aqueous evaporator concentrate and soil. Using a pilot-scale kinetic mixer which was installed and modified for this program, the maximum waste moisture content and particle size was determined. Following process development with surrogate wastes, the technology was successfully demonstrated at BNL using actual mixed waste.

• Research Organization: Brookhaven National Lab., Upton, NY (US)
• Sponsoring Organization: USDOE Office of Environmental Management (EM) (US)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 761002
• Report Number(s): BNL--66576; EW4010000; EW4010000
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ENCAPSULATION
HAZARDOUS MATERIALS
KINETICS
LOW-LEVEL RADIOACTIVE WASTES
MATERIALS TESTING
MIXERS
MIXING
PARTICLE SIZE
POLYETHYLENES
RADIOACTIVE WASTE PROCESSING