Preparation of magnetic Levextrel resin for cadmium(II) removal

Dong, Tingting; Xing, Huifang; Wu, Huiyong; Lv, Yingying; Wu, Lidan; Mi, Shuo; Yang, Liangrong

doi:10.1016/j.eti.2021.101657

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…Based on the literature, the plot of

\lg K_{normald}

against equilibrium pH gives straight lines with slopes is three for trivalent ions, [ 30 ] and two for divalent ions. [ 31–33 ]…”

Section: Resultsmentioning

confidence: 99%

“…Based on the literature, the plot of lgK d against equilibrium pH gives straight lines with slopes is three for trivalent ions, [30] and two for divalent ions. [31][32][33] However, the results showed that the slopes of trivalent RE 3+ ions were not all three, which was not consistent with the relationship three H + ions are released for each RE 3+ extracted. The previous literature has shown that RE 3+ ions have coordination numbers of 8 (Y 3+ ) or 9 (La 3+ and Sm 3+ ) in the aqueous phase, with hydrated La 3+ (1.25 Å) having the largest ionic radius, followed by Sm 3+ (1.14 Å) and Y 3+ (1.02 Å), which makes the charge density of La 3+ lower than that of Sm 3+ and Y 3+ , [29,34] thus resulting in differences in the kinetic and thermodynamic behaviour of ions in the aqueous and organic phases.…”

Section: Distribution Coefficients and Separation Factorsmentioning

confidence: 87%

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Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium

et al. 2023

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The adsorption–desorption behaviours of La3+, Sm3+, and Y3+ on 2‐ethylhexylphosphonic acid mono‐2‐ethyl hexyl ester (HEHEHP) extraction resin were investigated in a chloride medium. The effects of reaction time, pH, hydrochloric acid concentration, flow rate, and adsorption mechanism were studied in detail using static and dynamic experimental methods. The results show that La3+ is the first to reach adsorption equilibrium, followed by Sm3+ and Y3+; the highest adsorption capacities of La3+, Sm3+, and Y3+ are obtained at solution pH of 4 and in the order of Y3+ > Sm3+ > La3+. La3+, Sm3+, and Y3+ can be eluted by 0.3, 0.5, and 3 mol/L hydrochloric acid, respectively, indicating that La3+ elutes most easily, and Y3+ is difficult. Moreover, the flow rate has little effect on the peak of rare earth desorption. The adsorption process is chemisorption; the slope method indicates that for each mol Sm3+ or Y3+ ion adsorbed, 3 mol H+ ions are simultaneously released, but two for La3+ under the given pH conditions. It is expected to provide theoretical and technical support for preparation of ultra‐high purity rare earth by HEHEHP extraction resin.

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“…Based on the literature, the plot of

\lg K_{normald}

against equilibrium pH gives straight lines with slopes is three for trivalent ions, [ 30 ] and two for divalent ions. [ 31–33 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Distribution Coefficients and Separation Factorsmentioning

confidence: 87%

Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium

et al. 2023

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“…Solvent extraction can be used to separate Cd 2+ and other impurity metal ions. Currently, the commonly used extractants for Cd extraction are D2EHPA [92,93], 2-ethylhexyl phosphate mono-2-ethylhexyl ester [94], TBP [95], Cyanex272 [96], Cyanex923 [97], etc. Solvent extraction is effective for separating Zn 2+ and Cd 2+ from solutions [98].…”

Section: Solvent Extractionmentioning

confidence: 99%

A Critical Review on the Removal and Recovery of Hazardous Cd from Cd-Containing Secondary Resources in Cu-Pb-Zn Smelting Processes

Han

Wang

Sun

et al. 2022

Metals

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Due to the advancement of industrialization and the development of the metal smelting industry, cadmium (Cd), as a highly toxic heavy metal element, is discharged into the natural environment in the form of dust, slag, and waste solutions during the Cu-Pb-Zn smelting process, causing great harm to the soil, water environment, and human health. Meanwhile, Cd is a key component of Ni-Cd batteries and CdTe semiconductor materials. The removal and recovery of Cd from the Cu-Pb-Zn smelting process faces a dual concern with respect to resource recycling and environmental protection. This paper briefly introduces the Cd-containing secondary resources produced in the Cu-Pb-Zn smelting process, systematically reviews the recovery methods of Cd from dust, slag and waste solutions, and compares the technical principles, process parameters, separation efficiency, advantages and disadvantages, and application requirements. In addition, a new route to treat Cd-containing solutions via the foam extraction method was proposed, which has the advantages of a short reaction time, large handling capacity, high removal efficiency, and simple operation equipment, showing superior application prospects, especially for industrial bulk waste solutions with ultralow concentrations.

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Separation of thorium from radioactive rare-earth waste residue using aminophosphonate-functionalized polymer resin

Zhou

Wang

et al. 2023

J Radioanal Nucl Chem

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Preparation of magnetic Levextrel resin for cadmium(II) removal

Cited by 9 publications

References 37 publications

Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium

Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium

A Critical Review on the Removal and Recovery of Hazardous Cd from Cd-Containing Secondary Resources in Cu-Pb-Zn Smelting Processes

Separation of thorium from radioactive rare-earth waste residue using aminophosphonate-functionalized polymer resin

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Preparation of magnetic Levextrel resin for cadmium(II) removal

Cited by 9 publications

References 37 publications

Study on the adsorption–desorption behaviours of La3+, Sm3+, and Y3+ by HEHEHP extraction resin in chloride medium

Study on the adsorption–desorption behaviours of La3+, Sm3+, and Y3+ by HEHEHP extraction resin in chloride medium

A Critical Review on the Removal and Recovery of Hazardous Cd from Cd-Containing Secondary Resources in Cu-Pb-Zn Smelting Processes

Separation of thorium from radioactive rare-earth waste residue using aminophosphonate-functionalized polymer resin

Contact Info

Product

Resources

About

Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium

Study on the adsorption–desorption behaviours of La³⁺, Sm³⁺, and Y³⁺ by HEHEHP extraction resin in chloride medium