Electrochemical insights into the direct dissolution of impure sphalerites and their partial oxidation in an acidic environment.

ABSTRACT: This study examined the electrodissolution mechanism of five impure sphalerite samples, which differ significantly in purity levels, along with their partially oxidized counterparts in a 0.5 M H₂SO₄. Partially oxidized samples were prepared through an incomplete leaching of sphalerite using H₂SO₄ with Fe₂(SO₄)₃.H₂O as an oxidizing agent. The original sphalerite samples and the partially oxidized samples were referred to as SP and POS samples, respectively. Analyses using XRD, SEM, Raman spectroscopy, and electrochemical techniques suggested presence of elemental sulfur and a metal-deficient layer on the surface of the POS samples. Cyclic voltammetry revealed that the sample with the highest iron content

SUBMITTER: Khodadadmahmoudi G 

PROVIDER: S-EPMC11758027 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature