Process for the removal of heavy metals from acid, phosphate-con

Details Process for the removal of heavy metals from acid, phosphate-con Process for the removal of heavy metals from acid, phosphate-con

1987-07-02

1989-04-18

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423319, 423320, 423555, C01B 2516

Patent

active

048225827

ABSTRACT:
A process for the removal of heavy metals from an acid phosphate containing, liquid medium in which process a precipitate containing heavy metals is formed and is subsequently separated and wherein at least one of the two additives (a) sulphate ions and (b) calcium ions is added to the phosphate-containing, liquid medium under such conditions that a calcium sulphate anhydride-containing precipitate is formed.

REFERENCES:
patent: 1601208 (1926-09-01), Gerber
patent: 2081351 (1937-05-01), Booth et al.
patent: 3949047 (1976-04-01), Cherdron et al.
patent: 4388292 (1983-06-01), Palmer et al.
Chemical Abstracts No. 52906K, vol. 104, No. 8, Feb. 1986, p. 123.

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