Assessment of the Glycine Concentration for the Leaching of Cu, Zn, and Pb Contained in Tailings in the Presence of Thiourea

The use of glycine (C2H5NO2) in the presence of thiourea (CH4N2S) for the leachingLeaching of base metalsBase metals is under-researched. The aim of the study is to evaluate the influence of glycine concentration on the leachingLeaching of copperCopper (Cu), zinc (Zn), and leadLead (Pb) contained in mining tailingsMining tailings in the presence of thiourea. The sample was previously mineralogically characterized by XRDX-ray diffraction (XRD) and to know the elemental content of Cu, Zn, and Pb, the FRX and ICP techniques were implemented. For the leachingLeaching tests, different concentrations of [C2H5NO2] were used, maintaining a constant concentration of 0.1 mol l−1 of [CH4N2S], later the residual solids were characterized by XRDX-ray diffraction (XRD). As a result, a leachingLeaching of 33.02, 87.44, and 33.48% was obtained for Cu, Zn, and Pb, respectively.