Intensification of the extraction of rare earth elements at the local mechanical vibration in the interfacial layer

Golubina, E. N.; Kizim, N. F.; Alekseeva, Nataliya

doi:10.1016/j.cep.2018.08.019

Cited by 7 publications

(6 citation statements)

References 29 publications

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“…If liquids are solutions of substances capable of being involved in chemical interaction, a chemical reaction takes place either at the interface or in the adjacent parts of one of the liquids. The resulting molecules of a new substance can be localized at the interface, forming nanoparticles, which can crystallize, aggregate or remain unaggregated, interact with identically or oppositely charged particles [39], and form monolayer [40] or multilayer ordered structures or disordered clusters [41][42][43], films [44][45][46][47], gels [34], or precipitates [25,[48][49][50][51][52][53][54]. The range of interfacial formations is very wide (Fig.…”

Section: Interfacial Formationsmentioning

confidence: 99%

“…ent crystallinity fractions [48][49][50][51][52][53][121][122][123][124]. As nanoparticles can form structures with certain degrees of ordering and particle density during the self-assembly, short-and long-range orders can be observed.…”

Section: Interfacial Formations In Systems With D or F Elements And Dmentioning

confidence: 99%

“…The interfacial formations are observed visually. Their appearance changes over time; they can contract, expand, or deform [53]. They can be easily extracted from the interfacial layer (Fig.…”

Section: Interfacial Formations In Systems With D or F Elements And Dmentioning

confidence: 99%

See 2 more Smart Citations

Interfacial Synthesis: Morphology, Structure, and Properties of Interfacial Formations in Liquid–Liquid Systems

Golubina

Kizim

2021

Russ. J. Phys. Chem.

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The results of studies in the field of interfacial synthesis and interfacial formations in liquid–liquid systems are summarized. The mechanisms of the processes of interfacial synthesis are considered. Data on the self-assembly of nanoparticles, films, and 3D materials are given. The properties of materials of interfacial formations in systems with rare-earth elements and di(2-ethylhexyl)phosphoric acid, obtained both in the presence and absence of local vibrations, are described. It was established that materials obtained in the presence of local vibrations in the interfacial layer have higher density, melting point, and magnetic susceptibility and lower electric conductivity. The effect of force field parameters on the properties of interfacial formations is considered. Practical applications and prospects for research in the field of interfacial formations are discussed.

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Section: Interfacial Formationsmentioning

confidence: 99%

Section: Interfacial Formations In Systems With D or F Elements And Dmentioning

confidence: 99%

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Interfacial Synthesis: Morphology, Structure, and Properties of Interfacial Formations in Liquid–Liquid Systems

Golubina

Kizim

2021

Russ. J. Phys. Chem.

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“…На определённой частоте (будем называть её резонансной) величина краевого угла смачивания достигает своего максимального значения. Данные ранее выполненных кинетических исследований по накоплению соли ди-(2-этилгексил)фосфата лантаноида [12][13][14], РФА и ИК-спектроскопия показывают, что накопление на резонансной частоте максимально, доля кристалличности материала межфазных образований максимальна, размер кристаллита минимален и минимально содержание воды.…”

Section: результаты и их обсуждениеunclassified

Influence of the vibrations in the interfacial layer on the wettability of adhesized material interfacial formations in systems with d- and f-elements

Golubina

Kizim

Чекмарев

2019

Доклады Академии наук

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The effect of local vibration at interfacial layer of a heterogeneous liquid system on the wettability of the material of interfacial formations based on the salt of the d- or f-element of di-(2-ethylhexyl)phosphoric acid adhered to glass has been investigated. It is shown that in the field of mechanical vibrations one can obtain a material with a given value of the wetting angle, which has hydrophobic properties. It is established that the influence of mechanical vibrations is due to changes in the hydrodynamic situation in the transition region and is the result of complex interactions mainly hydrodynamic and coagulation processes in the interfacial layer of the di-(2-ethylhexyl)phosphoric acid - solvent system / water solution of the d- or f-element salt. The dependence of the wettability of the material of interfacial formations adhered to glass on the parameters of the force field (vibration frequency, amplitude), the design features of the experimental setup, and the composition of the system is shown.

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“…Now [14] is studying the mechanism of the kinetics of the interphase transfer in extraction processes. In [15], high efficiency of a nonstationary process for the separation of rare earth metals is shown and compared with it under the equilibrium conditions. In [16],an increase in the separation factor of the Nd/Prpair under nonstationary conditions by TBP liquid membrane from a nitric media is described using periodic temperature oscillations in the extractor.…”

Section: Introductionmentioning

confidence: 99%

Nonstationary separation of Nd and Pr by P507 extractant

Dorozhko

Afonin

2021

E3S Web Conf.

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The low efficiency of the separation of rare earth metals by extraction on one stage requires the combination of a large number of mixer-settlers in a cascade. The problem of increasing the rare earth elements separation factor is extremely urgent. One of the perspective methods is the nonequilibrium nonstationary process. In this work, it is offered to use the principle of a nonstationary extraction in the separation process of the Nd/Pr pair from chloride medium by the extractant based onP507. The results which have been received by an experimental setup allowing the monitoring of the influence of a cyclic change of physical-chemical parameters on extraction in the online modeare discussed. A comparison of two ways of implementation of extraction in the nonstationary mode is carried out. The apparent values of physical-chemical parameters (ΔG, ΔH, ΔS) in the temperatures range 15-65 °C are calculated from the data of joint extraction of Nd and Pr.

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Intensification of the extraction of rare earth elements at the local mechanical vibration in the interfacial layer

Cited by 7 publications

References 29 publications

Interfacial Synthesis: Morphology, Structure, and Properties of Interfacial Formations in Liquid–Liquid Systems

Interfacial Synthesis: Morphology, Structure, and Properties of Interfacial Formations in Liquid–Liquid Systems

Influence of the vibrations in the interfacial layer on the wettability of adhesized material interfacial formations in systems with d- and f-elements

Nonstationary separation of Nd and Pr by P507 extractant

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