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Holmium (III) removal from nitrate solutions in a form of dodecyl sulfates using ion flotation and extraction methods was studied. Distribution and removal ratios as a function of equilibrium aqueous phase ?? value were received. Comparison of experimental results was conducted and conclusions on the effectiveness of each method depending on the assigned task were drawn. Comparative analysis of extraction and flotation methods for holmium (III) cations removal from individual water-salt solutions and in the compre...

One of the general problems of all lines of research is the exhibition of various micro- and macroscopic effects. Considering complexity and heterogeneity of oil composition oil systems can be put down for as complex systems. Research related to the in-depth studying of the various complexity level oil systems chemical composition are highly topical for establishing causes of complications, arising in various processes. For the last decades, stability studies are developing intensively. The emphasis is upon method...

Apatite is mineral - common name for a number of related minerals of the apatite group with the common formula Ca5(PO4)3(F, OH, Cl). Mmineral species in the group are fluorapatite (F - up to 3.8), chlorapatite (Cl - up to 6.8), hydroxylapatite, carbonate-apatite. Kola apatite concentrate is a promising and raw material for complex processing, allowing to produce, in addition to the basic product пїЅ phosphoric fertilizers, strontium, rare earth elements and fluorine compounds. Despite obvious environmental expedie...