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

C - Chemistry, Metallurgy

22

B

53/375

C22B 3/00 (2006.01) C01B 25/238 (2006.01) C22B 3/38 (2006.01)

Patent

CA 1191700

PROCESS FOR EXTRACTING HEAVY METAL IONS FROM AQUEOUS SOLUTIONS ABSTRACT OF THE DISCLOSURE: 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 P2O5- 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.

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