The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2022
Filed:
Jun. 13, 2017
Freiberger Compound Materials Gmbh, Freiberg, DE;
Helmholtz-zentrum Dresden-rossendorf E.v., Dresden, DE;
Technische Universität Bergakademie Freiberg, Freiberg, DE;
Thomas Reinhold, Freiberg, DE;
Stefan Eichler, Dresden, DE;
Berndt Weinert, Freiberg, DE;
Oliver Zeidler, Schwerte, DE;
Michael Stelter, Wegefarth, DE;
FREIBERGER COMPOUND MATERIALS GMBH, Freiberg, DE;
Abstract
The present invention encompasses a method of selectively separating Ga from wastewaters with the aid of a dialysis method. This exploits the particular complexation behaviour of Ga, which forms an unstable tetrahalo complex. This forms only in the case of a sufficiently high halide concentration. Since the halide concentration becomes lower across the membrane, the Ga-tetrahalo complex breaks down in the membrane, as a result of which the Ga is retained. Other metals such as In and Fe do not show this behaviour, and therefore the tetrahalo complexes of these metals can pass through the membrane and hence can be selectively separated off.