GEOLINKS International Conference 2020, Book 2
ECOLOGY AND ENVIRONMENTAL STUDIES
RECOVERY OF GERMANIUM BY PRECIPITATION FROM STRONGLY ALKALINE SOLUTION
M.Sc. Andrzej Piotrowicz, Assoc. Prof. Dr. Sc. Stanisław Pietrzyk, Artur Puchała
The research material was a strongly alkaline solution containing germanium, lead, arsenic, zinc and trace amounts of other metals, obtained by leaching of industrial material. This study aimed to determine the behavior of the above metals in the precipitation process using various acidic agents: HCl, H2SO4, C2H2O4, C6H8O7. The tests were carried out in a wide pH range. The behavior and role of individual ions during the acidification of germanate solution is poorly understood, hence the study of this subject was undertaken.
The resulting precipitates and solutions were examined by XRF, XRD and ICP techniques. The recovery yields of individual elements was determined. Attempts were also made to precipitate Ge from a synthetic solution in order to compare the results obtained for the solution of an industrial solution.
This research shows that the presence of other ions interferes with the selective recovery of Ge from research solutions. Generally, it can be said that the method of recovery by acidification is effective at low concentrations of the solution's components.
germanium recovery, heavy metals metallurgy, hydrometallurgy