Abstract
The modern development of the construction materials sector determines the use of rare earth metals (REM) for various purposes. In particular, REM are added as basic alloying elements into magnesium alloys to increase alloy durability and strength. The complex systematic study of structural components and REM interaction are the basis for the phase state monitoring of multicomponent oxide polyfunctional materials. In addition, on the preparatory stage, layers with specified construction material coatings are formed. The paper presents experimental and theoretical results of studies of adsorptive bubble methods in the systems containing Samarium cations and surfactants, namely sodium dodecyl sulphate (NaDS). To identify the process mechanisms and prediction of optimal conditions of metal cations’ removal and separation by extraction, flotation, and ion flotation methods, one should know the pH of metal hydroxo-complexes and pH of the hydrate formation. The possibility of lanthanide ions’ removal (by the example of Samarium ions) by the solvent sublation method with NaDS as a collector and isooctyl alcohol as an extractant was studied. From the obtained experimental data, it was clear that the Sm3+ removal in acidic mediums is practically non-existent. The results obtained in this paper are topical in the production of electrode coating components, welding fluxes, sorbents for nuclear wastewater burial, wastewater treatment, highly porous heat-insulating and fire-resistant materials, cement, and concrete with improved frost resistance.
Highlights
InInthis thethe possibility of using sodium dodecyl sulfate for thefor removal of Sm3+of thispaper, paper, possibility of using sodium dodecyl sulfate the removal by extraction with isooctyl studiedis(Figure
It is well known that rare earth elements are scattered in nature and do not manifest themselves in elementary states or even in the form of individual rare earth compounds
They usually exist in rocks such as basalt, granite, gneiss, shale, and silicates in the form of mixed rare earth compounds forming various types of rare earth minerals
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The three methods of lanthanide cations removal are studied, namely ion flotation, Current. According to data by foreign researchers, an increase of effectiveness in current technologies at the expense of accompanying extraction of valuable components from production wastes [7,8] is possible when using ion flotation methods [17] in the mining industry. In papers [5,6,7], the ion flotation method is proposed for REE removal from apatite sulphuric acid processing products by different anion surfactants. The ion flotation process permits the preventing of sediment formation, REE loss, and usage of expensive extractants. Dodecyl sulphate content potentiometer method [21,22]
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