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Use of super acids to digest chrysotile and amosite asbestos in simple mixtures or matrices found in building materials compositions

United States Patent

6,005,158
December 21, 1999
View the Complete Patent at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
A composition for converting asbestos-containing material to environmentally benign components is provided. The composition comprises a flouro acid decomposing agent which can be applied to either amosite-containing thermal insulation or chrysotile-containing fire-proof material or to any asbestos-containing material which includes of chrysotile and amosite asbestos. The fluoro acid decomposing agent includes FP(O)(OH).sub.2, hexafluorophosphoric acid, a mixture of hydrofluoric and phosphoric acid and a mixture of hexafluorophosphoric acid and phosphoric acid. A method for converting asbestos-containing material to environmentally benign components is also provided.
Sugama; Toshifumi (Wading River, NY), Petrakis; Leon (Port Jefferson, NY), Webster; Ronald P. (Shoreham, NY)
Brookhaven Science Associates LLC (Upton, NY)
09/ 085,091
May 26, 1998
This invention was made with Government support under contract number DE-AC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.