Composition and process for the encapsulation and stabilization of radioactive hazardous and mixed wastes
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United States of America Patent
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Jul 15, 1997
Grant Date -
N/A
app pub date -
Jan 17, 1995
filing date -
Jan 17, 1995
priority date (Note) -
Expired
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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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