Evaluation of Silver Recovery from High-Sulphur Mining Waste Using Thiourea-Oxalate System.

Mine tailings are a byproduct of mineral extraction and often pose an environmental challenge due to the contamination of soil and water bodies with dissolved metals. However, this type of waste offers the opportunity for the recovery of valuable metals such as silver (Ag). In the present investigation, an integral analysis of a sample of tailings was carried out, addressing granulometry, elemental composition, neutralization potential (NP), and acid potential (AP), as well as mineralogy, for the dissolution of silver from this type of waste.

Synthesis and structural evolution of BaLaTiBiO solid solutions (0.0 ≤ x ≤ 0.05).

In this study, the synthesis and structural evolution of pure BaTiO and BaTiO co-doped with La and Bi, produced using the ball milling method and heat treatment, were analyzed. The starting materials included chemically pure precursor powders of BaCO, TiO, LaO and BiO. Stoichiometric calculations were performed using the BaLaTiBiO mechanism with concentrations x = 0.