Composition and process for the encapsulation and stabilization

Details Composition and process for the encapsulation and stabilization Composition and process for the encapsulation and stabilization

1997-10-14

1999-07-20

Mai, Ngoclan

Hazardous or toxic waste destruction or containment

Destruction or containment of radioactive waste

By fixation in stable solid media

588255, 588259, 264 05, 2505061, 976DIG383, G21F 900

Patent

active

059267720

ABSTRACT:
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 homogenous 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.

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