ACID TREATMENT UNDER LOW TEMPERATURE AND PRESSURE OF WASTE CONTAINING ASBESTOS
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Apr 30, 2009
filing date -
Apr 30, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a process for treating a waste containing asbestos, comprising a step (E) in which the asbestos contained in said waste is dissolved by reacting this waste with an acid other than hydrofluoric acid, preferably with hydrochloric acid, at a temperature of at least 125° C. and at a pressure greater than 0.2 M Pa (2 bar), and in which: the asbestos included in the treated waste is an asbestos of amphibole type; and/or the solution obtained at the end of the acid dissolution of the asbestos is reused, for example for the synthesis of apatites.
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