Extraction of rare earth metals with a multistage mixer-settler extraction column

Takahashi, Katsuroku; Abdeltawab, Ahmed A.; Nii, Susumu; Yajima, Toshihiro; Kawaizumi, Fumio

doi:10.1016/s0009-2509(01)00370-0

Cited by 19 publications

(7 citation statements)

References 17 publications

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“…The separation of Eu(III) from Sm(III), Eu(III), and Gd(III) has also been studied by electrochemical reduction and liquid-liquid extraction. Takahashi, Abdel-Tawab, Nii, Yajima, & Kawaizumi [12], [13] reported separation of Sm and Gd by extraction using 5 and 2 stages mixer settlers.…”

Section: Introductionmentioning

confidence: 99%

Separation of Gadolinium(III) from Terbium(III) by the Liquid-Liquid Extraction Method with Dibutyldithiophosphate as the Extractant

Budiman

Hardian

Virdasari

et al. 2022

J. Trop. Pharm. Chem.

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The purpose of this research is to separate gadolinium(III) from terbium(III), by the liquid-liquid extraction method, with the extractant dibutyl dithiophosphate. Gadolinium(III) and terbium(III) have been selected in this study to see if the two metallic ions still could be separated although they have only one difference in atomic number, and in fact, terbium (65Tb) is the next to gadolinium(64Gd), in the lanthanide series. Also besides, the two metals have been found together in the same mineral such as gadolinite, and in some other minerals in Indonesia. Extraction parameters have been firstly selected and extraction conditions have been optimized as well, using the experimental design of Plackett Burman. Thus, experiments have been done to select which of the nine parameters (i.e. Gd(III) and Tb(III) concentrations, the concentration of the extractant (dibutyl dithiophosphate), pH, volume ratio of aqueous phase to the organic phase, extraction temperature, shaking rate, shaking time, resting time (after shaking), have their significant effect on the extraction efficiency and separation. The data resulted from this study show that there were five of the nine factors studied that determine the extraction efficiency and separation. They were (with its respective optimum value in the bracket): Gadolinium concentration [Gd(III)](5 ppm), terbium concentration [Tb(III)](5 ppm), pH(3.0), shaking time (10 minutes), and rest time after shaking (10 minutes).

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Section: Introductionmentioning

confidence: 99%

Separation of Gadolinium(III) from Terbium(III) by the Liquid-Liquid Extraction Method with Dibutyldithiophosphate as the Extractant

Budiman

Hardian

Virdasari

et al. 2022

J. Trop. Pharm. Chem.

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show abstract

“…Then the stage efficiency based on hydrodynamics and mass transfer within the column was studied [10].…”

Section: Introductionmentioning

confidence: 99%

Extraction of samarium and gadolinium from aqueous nitrate solution with D2EHPA in a pulsed disc and doughnut column

Torkaman

Safdari

Torab‐Mostaedi

et al. 2015

Journal of the Taiwan Institute of Chemical Engineers

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“…The theory of countercurrent extraction has contributed a lot to the development of rare earth separation processes in China [3][4][5][6][7][8][9][10]. In recent years, green chemistry processes have been paid much attention in extraction separation industry [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Minimum amount of extracting solvent of two-component extraction separation in a complex feeding pattern

Cheng

Zhang

et al. 2015

Separation and Purification Technology

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Extraction of rare earth metals with a multistage mixer-settler extraction column

Cited by 19 publications

References 17 publications

Separation of Gadolinium(III) from Terbium(III) by the Liquid-Liquid Extraction Method with Dibutyldithiophosphate as the Extractant

Separation of Gadolinium(III) from Terbium(III) by the Liquid-Liquid Extraction Method with Dibutyldithiophosphate as the Extractant

Extraction of samarium and gadolinium from aqueous nitrate solution with D2EHPA in a pulsed disc and doughnut column

Minimum amount of extracting solvent of two-component extraction separation in a complex feeding pattern

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