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

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.

Inventors:
 [1];  [2]
  1. Wading River, NY
  2. Patchogue, NY
Issue Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
OSTI Identifier:
871445
Patent Number(s):
5732364
Application Number:
08/781003
Assignee:
Associated Universities, Inc. (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
composition; process; encapsulation; stabilization; radioactive; hazardous; mixed; wastes; provides; disposal; preferably; multibarrier; combining; substantially; simultaneously; dry; waste; powder; non-biodegradable; thermoplastic; polymer; anhydrous; additive; extruder; form; homogenous; molten; matrix; directed; clean; polyethylene; liner; allowed; cool; forming; monolithic; dispersion; environment; molten matrix; monolithic waste; waste form; mixed waste; mixed wastes; substantially simultaneously; thermoplastic polymer; multibarrier encapsulation; simultaneously dry; waste powder; anhydrous additive; polyethylene liner; non-biodegradable thermoplastic; combining substantially; dry waste; homogenous molten; substantially simultaneous; plastic polymer; /588/264/976/

Citation Formats

Kalb, Paul D, and Colombo, Peter. Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes. United States: N. p., 1998. Web.
Kalb, Paul D, & Colombo, Peter. Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes. United States.
Kalb, Paul D, and Colombo, Peter. Tue . "Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes". United States. https://www.osti.gov/servlets/purl/871445.
@article{osti_871445,
title = {Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes},
author = {Kalb, Paul D and Colombo, Peter},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 24 00:00:00 EST 1998},
month = {Tue Mar 24 00:00:00 EST 1998}
}