Thesis topic proposal
Tamás Kékesi
Purification of chloride solutions by anion exchange for the extraction of high purity metals


Institute: University of Miskolc
material sciences
Antal Kerpely Doctoral School of Materials Science and Technology

Thesis supervisor: Tamás Kékesi
Location of studies (in Hungarian): ME-MAK-MI
Abbreviation of location of studies: MAK

Description of the research topic:

Preparation of high purity metals, mainly required by the modern electronic industry, is aimed by hydro-electrometallurgical methods, that are economically feasible at low scales and with low investment. The aqueous chloride waste solutions obtained from industrial technologies or model solutions prepared by chemical or anodic dissolution can be purified by selective methods of ion exchange and/or precipitation. The possibility of purification must be based on equilibrium anion exchange distribution studies. The elimination of the impurity metals has to be verified and optimized by the results of anion-exchange chromatographic elution experiments. High purity metal is obtained by direct electrowinning or hydrogen reduction after evaporation to dryness. Efficiency of the process should be enhanced by optimizing the composition and the redox conditions of the aqueous media. 

Required language skills: English
Number of students who can be accepted: 1

Deadline for application: 2022-01-15

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