Process for the defluorination of dilute fluorine containing aqu

Details Process for the defluorination of dilute fluorine containing aqu Process for the defluorination of dilute fluorine containing aqu

1974-03-04

1976-03-09

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, 423490, C01B 2516

Patent

active

039432327

ABSTRACT:
A process is provided whereby dilute aqueous phosphatic acid solutions of 2 to 3 percent or less and containing generally less than 1 percent fluorine are substantially quantitatively defluorinated without loss of the phosphorous or acid values of the water and with a net production of H+ ions from the contained SiF.sub.6.sup.= ions.

REFERENCES:
patent: 2914474 (1959-11-01), Hillyer
patent: 3118731 (1964-01-01), Svanoe
patent: 3124419 (1964-03-01), Germain et al.
patent: 3379501 (1968-04-01), Treitler et al.
patent: 3619136 (1971-11-01), Case

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