Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes

Patent · Tue Jul 20 00:00:00 EDT 1999

OSTI ID:6316117

Kalb, P D; Colombo, P

The present invention provides a composition and process for disposal of radioactive, hazardous and mixed wastes. The present invention preferably includes a process for multibarrier encapsulation of radioactive, hazardous and mixed wastes by combining substantially simultaneously dry waste powder, a non-biodegradable thermoplastic polymer and an anhydrous additive in an extruder to form a homogeneous molten matrix. The molten matrix may be directed in a clean'' polyethylene liner, allowed to cool, thus forming a monolithic waste form which provides a multibarrier to the dispersion of wastes into the environment. 2 figs.

• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• Assignee: Brookhaven Science Associates LLC, Upton, NY (United States)
• Patent Number(s): US 5926772; A
• Application Number: PPN: US 8-950023
• OSTI ID: 6316117
• Resource Relation: Patent File Date: 14 Oct 1997
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ENCAPSULATION
FABRICATION
HAZARDOUS MATERIALS
RADIOACTIVE WASTE DISPOSAL
WASTE DISPOSAL
WASTE FORMS
MANAGEMENT
MATERIALS
RADIOACTIVE WASTE MANAGEMENT
WASTE MANAGEMENT
052002* - Nuclear Fuels- Waste Disposal & Storage