Process for selectively recovering Ge and as from aqueous soluti

Details Process for selectively recovering Ge and as from aqueous soluti Process for selectively recovering Ge and as from aqueous soluti

1987-10-16

1988-10-04

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210708, 210724, 210749, B01D 1705

Patent

active

047754796

ABSTRACT:
A process for extracting germanium and/or arsenic from an aqueous solution is described. In order to increase the yield and to perform a highly specific separating process, the liquid membrane technology is employed, in which the starting solution is adjusted by means of hydrochloric acid to a concentration in excess of 6 and up to 10 moles HCl/1, a polyisobutylenesuccinic anhydride/polyamine condensation product is used as a surfactant in the organic outer phase of the liquid membrane emulsion is adjusted to a pH value from 0 to 14 while a supply of chlorine ions is precluded.

REFERENCES:
patent: 3779907 (1973-12-01), Li et al.
patent: 4090871 (1978-05-01), Lebleu et al.
patent: 4409078 (1983-10-01), Wagner et al.
patent: 4432952 (1984-02-01), Schepper

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