Method of treating fluorine compound and treated substance
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United States of America Patent
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May 24, 2005
Grant Date -
Dec 5, 2002
app pub date -
Jul 26, 2001
filing date -
Jul 27, 2000
priority date (Note) -
Expired
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Abstract
Divalent and trivalent metal salts are added to the solution containing the fluorine compound to precipitate the layered double hydroxide containing the fluorine compound between layers. By these processes, the fluorine compound can be fixed with high rate. Moreover, if necessary, the precipitated layered double hydroxide can be recovered to separate the fluorine compound or its salt between layers. Therefore, the burden to environment or the ecosystem by the fluorine compound can be reduced.
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