Process for extracting heavy metal ions from aqueous solutions

Details Process for extracting heavy metal ions from aqueous solutions Process for extracting heavy metal ions from aqueous solutions

1984-02-23

1985-03-05

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 42, 423 87, 423100, 423101, 423321R, 423321S, 4236585, 423DIG14, C01G 300, C01G 1100, C01G 900, C01G 2800

Patent

active

045030162

ABSTRACT:
The disclosure relates to a process for liquid/liquid-extraction of heavy metal ions from acid aqueous solutions with the aid of water-insoluble dithiophosphoric acid diesters as extracting agents. More particularly, use is made of phosphoric acid solutions with a P.sub.2 O.sub.5 -content of from 3 to 80 weight %, the solutions being free from emulsion-forming organic contaminants or having previously been freed therefrom in known manner. The resulting aqueous phase is separated from the phase containing the dithiophosphoric acid diester.

REFERENCES:
patent: 3211521 (1965-10-01), George
patent: 3666446 (1972-05-01), Cook
patent: 4226791 (1980-10-01), Reinhardt
patent: 4255392 (1981-03-01), Chiang
patent: 4339416 (1982-07-01), Fitoussi

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