José Manuel Flores-Álvarez

TL;DR: In this article, a study of the electrochemical behavior of galena and the effect of the Ca2+ and SO42− species on the mineral behavior at different pH, was carried out using carbon paste electrodes.

TL;DR: In this article, measurements performed to study the interaction mechanism of calcium and sulfate with galena and their effect on xanthate adsorption are presented and discussed, which suggests that calcium ion probably has a certain chemical affinity for the active sites of the galena, which hinders the occurrence of ion exchange collector-sulfate or collector-hydroxyl to form lead Xanthate (PbX2), which is the species responsible for the enhanced hydrophobicity of the mineral.

TL;DR: A density functional theory study of magnesium oxide (MgO)n clusters presented adsorption energy values in accordance with the previously reported studies of physisorption processes and the fundamental role of the Mg-O bonds' polarity in the systems' storage capacity was highlighted.

TL;DR: In this paper, a novel selective sensor for copper based on a carbon paste electrode modified with 2-mercaptobezothiazole (CPE-MBT) using square wave anodic stripping voltammetry (SWASV) is presented.

TL;DR: In this paper, the results of an experimental study designed to investigate the feasibility of removing calcium and sulfate from saturated solutions by using calcium aluminate-based compounds were discussed and the results obtained show that the treatment of saturated solutions (0.016 mol/L CaSO4) alkalinized at pH above 12 by adding 0.75 g/l CaO and treated with a calcium aluminates-based compound (C70: 70% Al2O3, 30% CaO), promotes the precipitation of calcium sulfate as ettringite