Sorption selectivity of cobalt(II), nickel(II), and copper(II) ions by KB-2E macroreticular carboxylic cation exchanger from aqueous-salt solutions of alkali metals

Bobkova, L. A.; Козик, В. В.; Odnostorontseva, T. V.; Petrova, Victoria

doi:10.1134/s1070427212070105

Cited by 3 publications

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“…Selectivity is determined by the nature of active groups and the ability to specifically interact with sorbed ions, the charge and hydration of ions, and the solution composition. High capacity and selectivity to d-metal ions are typical of the KB-2E macroreticular carboxylic cation exchanger on the basis of methylacrylate and the long chain crosslinking agent of divinyl ether of diethylene glycol (DEGDVE) [1]. The cation exchanger was synthesized by TOKEM LLC located in Kemerovo.…”

Section: Introductionmentioning

confidence: 99%

Sorption Selectivity of Rare-Earth Elements Ions by KB-2E Macroreticular Carboxylic Cation Exchanger

Bobkova

2015

AMR

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Sorption selectivity of a number of REE ions (Pr3+, Nd3+, Sm3+, Yb3+) was studied with the help of the KB-2E macroreticular carboxylic cation exchanger with a different content of a crosslinking agent. Selectivity was weakly dependent on the degree of crosslinking of the cation exchanger and concentration of the sorbed metal ion, which could be explained by the macroreticular structure of the cation exchanger. An increase in sorption selectivity of heavier REEs (Yb3+) correlated with a decrease in their crystallographic radius. It was concluded that a coordinate link of REE ions and oxygen donor atoms - a part of the cation exchanger - had been formed.

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Section: Introductionmentioning

confidence: 99%

Sorption Selectivity of Rare-Earth Elements Ions by KB-2E Macroreticular Carboxylic Cation Exchanger

Bobkova

2015

AMR

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Nickel sorption from solutions with high salt concentration

Makovskaya

Kolmachikhina

Lobanov

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The object of the study is salt concentrates formed as a result of treatment of concentrated acidic and alkaline wastewater of galvanic processes, realized on Ural Optical & Mechanical Plant (Russia). Salt concentrates are to be disposed of as low-hazard substances, but periodically the presence of nickel ions in them was detected. Concentration of nickel ions reaches up to 0.3 g/L, the total salt content reaches 200 g/L. The possibility of sorption purification of salt concentrates from nickel on the aminocarboxylicionite Lewatit TP 207 was studied, and the capacitance characteristics of the ionite were determined. It is shown that a high salt background does not reduce the ion exchange capacity of ionite for nickel. The dynamic capacity of Lewatit TP 207 before the breakthrough was 0.155 g/g. Nickel desorption is carried out with 20% sulfuric acid. The maximum concentration of nickel in the eluates was 25.484 g/L. Such eluates can be returned to the nickel-plating bath. The technology of periodic ion-exchange purification of salt concentrates is proposed.

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Cu2+ and Ni2+ Cation Sorption/Desorption Processes on Amorphous Titanium Phosphate Sorbents

2022

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Sorption selectivity of cobalt(II), nickel(II), and copper(II) ions by KB-2E macroreticular carboxylic cation exchanger from aqueous-salt solutions of alkali metals

Cited by 3 publications

References 0 publications

Sorption Selectivity of Rare-Earth Elements Ions by KB-2E Macroreticular Carboxylic Cation Exchanger

Sorption Selectivity of Rare-Earth Elements Ions by KB-2E Macroreticular Carboxylic Cation Exchanger

Nickel sorption from solutions with high salt concentration

Cu2+ and Ni2+ Cation Sorption/Desorption Processes on Amorphous Titanium Phosphate Sorbents

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