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Pimneva, L. A.; Pakholkov, V.S.

doi:10.1023/a:1016130402158

Cited by 3 publications

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“…The prevalence of the degree of sorption of metal, as was established earlier for model solutions of a mixture of metal ions, de-pends on the radius and coordination number of the individual metal. The sorption capacity of sorbents with respect to equally charged metal ions depends on their ionic radius [16,17]. Ions with a large radius are sorbed in larger amounts since they are less prone to the formation of a hydrated shell reducing the force of electrostatic attraction.…”

Section: Resultsmentioning

confidence: 99%

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay

Zhumagaliyeva

Iminova

Kairalapova

et al. 2021

Eurasian Chem. Tech. J.

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The paper shows the study results of sorption capacities of composite gels based on polyacrylic and polymethacrylic acids with bentonite clay as the mineral filler concerning heavy metal ions (Pb+2, Cu+2, Ni+2, Zn+2, Fe+2, Cd+2). The binding of metal ions to gels occurs through the formation of electrostatic bonds between the charged surface of bentonite clay and ionogenic functional groups of polymers in the composition, as well as the coordination bonds between metal ions and unshared pairs of oxygen electrons in the functional groups of polymers. The gel swelling degree decreases in metal solutions with increasing metals concentration and the content of BC in the composite. The sorption and desorption of heavy metal ions from the polymer-clay composites from model solutions and samples of industrial wastewater from the Kazakhstani metallurgical plants were evaluated. The adjustment of the pH, the temperature of the medium and the clay content in the composite leads to increasing the degree of sorption and achieving regeneration of the used composite gels in certain media. The data obtained testify to the prospects of using these composites as effective sorbents of heavy metals from industrial wastewaters expanding the range of composite materials for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay

Zhumagaliyeva

Iminova

Kairalapova

et al. 2021

Eurasian Chem. Tech. J.

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Resin Ion Exchange and Liquid-Liquid Extraction of Indium and Thallium from Chloride Media

Tereshatov

Boltoeva

Folden

2015

Solvent Extraction and Ion Exchange

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Separation procedures of indium and thallium for both future investigation of superheavy element 113 and fundamental research of its light homologues have been developed. Two chemical methods, namely ion exchange and solvent extraction, have been applied. Cation exchange behavior in hydrochloric acid media and the reversibility of the In and Tl elution order due to oxidation state of the latter are described. Extraction of Tl(I), Tl(III) and In(III) from aqueous HCl solutions with and without tri-n-butyl phosphate into the ionic liquid 1-butyl-3-methyl imidazolium bis(trifluoromethanesulfonyl)imide, has been investigated. The extraction efficiencies of Tl(I) and In(III) have been found to be much lower than those of Tl(III) both with and without an organic ligand. The extraction mechanism is suggested. Suggestions for both Downloaded by [Hacettepe University] at 01:32 11 August 2015 A c c e p t e d M a n u s c r i p t 2 liquid and gas phase experiments aimed at element 113 studies have been considered based on the results observed.

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Sorption recovery of gallium and aluminum from alkaline solutions on an AN-31 anion exchanger

Черемисина

Ponomareva

Sagdiev

2017

Russ. J. Non-ferrous Metals

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Cited by 3 publications

References 1 publication

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay

Resin Ion Exchange and Liquid-Liquid Extraction of Indium and Thallium from Chloride Media

Sorption recovery of gallium and aluminum from alkaline solutions on an AN-31 anion exchanger

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