Sorption of Th, U, and Am on phosphorus-containing ion-exchange materials

Некрасова, Н. А.; Gelis, V. M.; Milyutin, V. V.; Budantseva, N. A.; Kozlitin, E. A.; Logunov, M. V.; Pristinskii, Yu. E.

doi:10.1134/s1066362210010169

Cited by 10 publications

(3 citation statements)

References 6 publications

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“…The peak at 825 cm −1 is attributed to the C-H out of plane deformation vibrations in the benzene ring. This band is associated with the crosslinking of divinylbenzene and the presence of sulfonic groups at the ring (Abderrahim et al 2006;Lazar et al 2014;Nekrasova et al 2010). Additionally, the adsorption bands in the 1200-900 cm −1 region are attributed to the S=O stretching vibrations in sulfonate and P=O stretching vibrations in the phosphonate functional groups e.g.…”

Section: Ftir Studiesmentioning

confidence: 99%

Recovery of metals from waste nickel-metal hydride batteries using multifunctional Diphonix resin

2019

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In this study, Diphonix resin containing sulfonic, diphosphonic and carboxylic groups was used to evaluate the adsorption capacity of metal ions contained in the nickel-metal hydride batteries (Ni-MH). This type of ion exchanger can be considered as the multifunctional material having great affinity to many metal ions. Using Diphonix resin adsorption process was carried out for La(III) and Ni(II) ions to characterize kinetic, adsorption and thermodynamic parameters. Preliminary studies of the Nd(III), Ce(III), La(III), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) metal ions mixture were also performed. The best results of adsorption studies were obtained using 0.2 M HNO 3. Diphonix resin exhibits especially good adsorptive properties with respect to rare earth element ions (adsorption efficiency of about 100%) in comparison with the heavy metal ions in the second oxidation state (about 50% or below). The series of affinity of the resin for the studied ions can be presented as follows: La(III) > Fe(III) > Nd(III) > Ce(III) > Cu(II) > Zn(II) > Co(II) > Ni(II). The obtained results confirmed the possibility of further use of the resin for the recovery and separation of rare earth elements from solutions after Ni-MH batteries leaching.

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Section: Ftir Studiesmentioning

confidence: 99%

Recovery of metals from waste nickel-metal hydride batteries using multifunctional Diphonix resin

2019

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“…An increase in the solution acidity and introduction of sodium ions into the sorption medium lead to a decrease in the sorption. With S-957 resin, REE and TPE were separated for the first time on a phosphorus-containing sorbent by displacement chromatography in the presence of DTPA (diethylenetriaminepentaacetic acid).Phosphorus-containing ion exchangers are capable of recovering uranium and thorium from acid solutions [1,2]. Purolite®S-957 ion exchanger (hereinafter, simply S-957) containing phosphonic acid and sulfo groups exhibits the highest ability to sorb actinide ions.…”

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confidence: 99%

“…Phosphorus-containing ion exchangers are capable of recovering uranium and thorium from acid solutions [1,2]. Purolite®S-957 ion exchanger (hereinafter, simply S-957) containing phosphonic acid and sulfo groups exhibits the highest ability to sorb actinide ions.…”

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confidence: 99%

Separation of rare-earth and transplutonium elements by displacement chromatography on S-957 phosphonic ion exchanger

et al. 2012

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Sorption of transplutonium (TPE) and rare-earth (REE) elements on Purolite®S-957 ion exchanger containing phosphonic acid and sulfo groups was studied. Rare-earth elements are efficiently sorbed from weakly acidic solutions (≤0.1 M HNO 3 ). An increase in the solution acidity and introduction of sodium ions into the sorption medium lead to a decrease in the sorption. With S-957 resin, REE and TPE were separated for the first time on a phosphorus-containing sorbent by displacement chromatography in the presence of DTPA (diethylenetriaminepentaacetic acid).Phosphorus-containing ion exchangers are capable of recovering uranium and thorium from acid solutions [1,2]. Purolite®S-957 ion exchanger (hereinafter, simply S-957) containing phosphonic acid and sulfo groups exhibits the highest ability to sorb actinide ions. High affinity of phosphonic acid groups for UO 2 2+ , Th 4+ , and Pu 4+ ions allows efficient sorption of these ions from 3.0-5.0 M HNO 3 solutions.The goal of this study was to evaluate the ability of S-957 resin to sorb rare-earth (REE) and transplutonium (TPE) elements (with Eu and Am as examples) and to examine the possibility of separating REE and TPE on S-957 ion exchanger by displacement chromatography in the presence of a complexing agent, DTPA (diethylenetriaminepentaacetic acid).(24 h). Then the sorbent was filtered off with a paper filter, and the equilibrium concentration of the target component in the filtrate was determined. From the analysis results, we calculated the gravimetric distribution coefficient of the element (K d , cm 3 g -1 ), static exchange capacity (Е, mg cm -3 resin), and Eu/Am separation factor (α Eu/Am ): EXPERIMENTALThe ability of S-957 resin to sorb Eu 3+ and Am 3+ ions was studied in the batch and dynamic modes. Prior to experiments, the resin was treated in succession with 5% Na 2 CO 3 and 3 M HNO 3 solutions. After the treatment, the sorbent was thoroughly washed with distilled water and dried in air to constant weight.Batch experiments were performed by contact of a weighed portion of the air-dry sorbent with a solution aliquot for a time sufficient to attain the equilibrium(2) Е = (C 0 -C e )VK sw /m,where С 0 and С e are the sorbate ion concentrations in the initial and equilibrium solutions, respectively, g dm -3 ; V, solution volume, cm 3 ; m, ion exchanger volume, g; K sw , sorbent swelling coefficient equal to the ratio of the ion exchange volume in the wet state to its weight in the air-dry state, cm 3 g -1 , equal to 4.0 for S-957; K d Eu and K d Am , distribution coefficients of Eu and Am.The sorption isotherms were taken by contacting various weighed portions of the resin with a constant aliquot of the solution. From the data obtained, the total exchange capacity and the exchange constant were determined.Dynamic experiments were performed in the col-

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Development of a Sorption Technology for Separating Uranium and Rare-Earth Elements

2020

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Sorption of Th, U, and Am on phosphorus-containing ion-exchange materials

Cited by 10 publications

References 6 publications

Recovery of metals from waste nickel-metal hydride batteries using multifunctional Diphonix resin

Recovery of metals from waste nickel-metal hydride batteries using multifunctional Diphonix resin

Separation of rare-earth and transplutonium elements by displacement chromatography on S-957 phosphonic ion exchanger

Development of a Sorption Technology for Separating Uranium and Rare-Earth Elements

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