Abatement of asbestos using fluorinated metal compounds
The disclosed subject matter relates to a method of treating of asbestos or asbestos-containing material, comprising applying to the asbestos or asbestos-containing material a composition including a treatment compound comprising at least one of hexafluoro titanium di-ammonium, potassium hexafluoro zirconate. ammonium hexafluoro phosphate. ammonium hexafluoro stannate, ammonium hexafluoro germanate, ammonium tetrafluoro borate or ammonium heptafluoro tantalite; and a fluorine scavenger compound.
1. A method of treating of asbestos or asbestos-containing material, comprising:
applying to the asbestos or asbestos-containing material a composition including a treatment compound comprising at least one of hexafluoro titanium di-ammonium, potassium hexafluoro zirconate, ammonium hexafluoro phosphate, ammonium hexafluoro stannate, ammonium hexafluoro germanate, ammonium tetrafluoro borate or ammonium heptafluoro tantalite; and a fluorine scavenger compound.
2. The method according to claim 1 , wherein the fluorine scavenger compound is boric acid.
3. The method according to claim 1 , wherein the treatment compound is hexafluoro titanium di-ammonium.
4. The method according to claim 1 , wherein the asbestos or asbestos-containing material includes asbestos fibers and applying the treatment compound results in crosslinked asbestos fibers, coated asbestos fibers or both.
5. The method according to claim 1 , wherein the applying step is conducted at room temperature and ambient pressure.
6. The method according to claim 1 , wherein the amount of treatment compound is greater than the molar amount of asbestos.
7. The method according to claim 1 , wherein the amount of fluorine scavenger compound provides greater than one hydrogen for each fluorine in the treatment compound.
8. A method of treating of asbestos or asbestos-containing material including chrysotile, comprising:
applying to the asbestos or asbestos-containing material a composition including a treatment compound comprising hexafluoro titanium di-ammonium; and
a fluorine scavenger compound comprising boric acid.
9. The method according to claim 8 , wherein the concentration of hexafluoro titanium di-ammonium is in molar excess to the concentration of chrysotile in the asbestos or asbestos-containing material to which it is applied.
10. The method according to claim 8 , wherein the asbestos or asbestos-containing material includes asbestos fibers and applying the treatment compound results in crosslinked asbestos fibers, coated asbestos fibers or both.
11. The method according to claim 8 , wherein the applying step is conducted at room temperature and ambient pressure.
12. The method according to claim 8 , wherein the amount of treatment compound is greater than the molar amount of chrysotile.
13. The method according to claim 8 , wherein the amount of fluorine scavenger compound provides at least one hydrogen for each fluorine in the treatment compound.