Separation of Dy, Y, Tm and Yb from Heavier Rare Earth Residue by Column Method Using Solvent Impregnated Resin. Separation of rare earth with solvent impregnated resin(3rd Report).

隼次, 芝田; 茂野, 松本; 紀彦, 中山; 美紀, 真下; 秀樹, 山本

doi:10.2473/shigentosozai.112.873

Cited by 5 publications

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“…6b were however overlapped, the mutual separation of the metals using the conventional frontal analysis mode was impossible. Gradient elution mode has been revealed to be effective to improve separation of the metals with chromatographic operation 15,16) . The gradient elution was therefore conducted by connecting another column packed with the fresh coated SIR to the column which adsorption of the metals was saturated, and the loaded metals were eluted by dilute nitric acid with gradually increasing concentration.…”

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confidence: 99%

Separation and Recovery of Eu(III) and Y(III) with Solvent Impregnated Resin Coated by Crosslinked Chitosan

Nishihama¹,

Kawasaki²,

Yoshizuka³

2014

J.I.E.

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Separation of europium (Eu 3+ ) and yttrium (Y 3+ ), using a solvent impregnated resin (SIR) containing 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, coated by water-soluble chitosan crosslinked by glutaraldehyde, was investigated. Coating of the SIR successfully suppressed leakage of the extractant during adsorption processing. Adsorption of Eu 3+ with both coated and uncoated SIRs was progressed with Langmuir mechanism, and the maximum adsorption amount of Eu 3+ at equilibrium pH = 2.27 was 0.294 mol/kg with coated SIR and 0.310 mol/kg with uncoated SIR. Decrease in the maximum adsorption amount by coating SIR with polymer can be suppressed rather than the other coated SIRs previously reported. The coated SIR was then applied to column separation of Eu 3+ and Y 3+. Complete separation of the metals could be achieved by gradient elution with a gradual increase in the concentration of a dilute nitric acid. The coated SIR could also be reused for repeated adsorption-elution processing.

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confidence: 99%