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Combination biological and microwave treatments of used rubber products

United States Patent

June 18, 2002
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
A process and resulting product is provided in which a vulcanized solid particulate, such as vulcanized crumb rubber, has select chemical bonds altered by biotreatment with thermophillic microorganisms selected from natural isolates from hot sulfur springs. Following the biotreatment, microwave radiation is used to further treat the surface and to treat the bulk interior of the crumb rubber. The resulting combined treatments render the treated crumb rubber more suitable for use in new rubber formulations. As a result, larger loading levels and sizes of the treated crumb rubber can be used in new rubber mixtures and good properties obtained from the new recycled products.
Fliermans; Carl B. (Augusta, GA), Wicks; George G. (Aiken, SC)
Westinghouse Savannah River Company, LLC (Aiken, SC)
09/ 542,394
April 4, 2000
The United States Government has rights to this invention pursuant to contract number DE-AC09-96-SR18500 between the U.S. Department of Energy and Westinghouse Savannah River Company.