Extraction of Critical Elements from Sulfuric Acid Solutions

Abstract

To address the supply risk of critical semiconducting materials, sustainable resources need to be developed. a zinc leach residue originating from electric arc furnace dust contains gallium (Ga), germanium (Ge), and indium (In). the residue can be leached with sulfuric acid to extract Ga, Ge, and in into an aqueous solution, however a process is needed to separate and concentrate these elements for recovery. the extraction of these critical elements from sulfuric acid solutions were examined using commercially available solvent extraction extractants and ion exchange resins. Distribution ratios and separation factors of these products are reported. a potential flowsheet to recover these critical electronic elements from a zinc leach residue is presented.

Department(s)

Materials Science and Engineering

Comments

U.S. Department of Energy, Grant 1.1.18

International Standard Book Number (ISBN)

978-087335521-6

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 Curran Associates Inc., All rights reserved.

Publication Date

01 Jan 2023

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