Synthesis and Characterization of High-Stability Solvent-Impregnated Resins

Alexandratos, Spiro D.; Ripperger, K.P.

doi:10.1021/ie9804780

Cited by 33 publications

(13 citation statements)

References 17 publications

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“…Alexandratos et al [33,55] proposed a method to coat SIRs by using vinyl groups pre-prepared on the surface of a cross-linked macroporous support to anchor the polar copolymer to the surface of the bead. The experimental results showed that the coated SIR can prevent the loss of extractant effectively and does not hinder the complexation of metals.…”

Section: Preparation Of High-stability Sirsmentioning

confidence: 99%

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

et al. 2016

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The recovery and separation of metals from aqueous solutions is one of the research hotspots in hydrometallurgy, environment protection, analytical chemistry, etc. Much attention has been paid to solvent-impregnated resins (SIRs) since these were firstly proposed for the extraction of metals. SIRs are characterized by high efficiency and selectivity, convenient preparation, and easy operation because they combine the unique advantages of solvent extraction and ion exchange. The preparation and features of SIRs are summarized and their applications in the extraction of various metals from solutions are reviewed. In addition, the equilibrium, thermodynamics, and sorption kinetics of the metals onto SIRs are elucidated in detail.

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Section: Preparation Of High-stability Sirsmentioning

confidence: 99%

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

et al. 2016

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“…Coating of SIR with thin polymeric film to prevent the leakage of the extractant has therefore recently been reported . [9][10][11][12][13] . A review paper concluded that a crosslinked water-soluble polymer, such as polyvinyl alcohol (PVA), is a suitable polymeric film, because the extractant impregnated is to be dissolved into organic solvent when the coating is carried out in organic solution 14) .…”

Section: Introductionmentioning

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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“…Due to their easy preparation procedure, simplicity of use, and their versatility to meet the specific requirement of metal separation, the SIRs are considered to be a very effective means to separate metal ions from the multi-component mixtures. A large number of papers related to their application for the separation and recovery of target metal ions is available in the literature [2][3][4][5][6][7][8][9][10][11][12][13][14][15] . However, a major drawback of the SIRs is their limited durability.…”

Section: Introductionmentioning

confidence: 99%

“…However, a major drawback of the SIRs is their limited durability. A gradual loss in the capacity of the SIRs to adsorb the target metal ions has been observed due to the leakage of the extractant from the resin into the aqueous phase 9,10 . We also reported in our previous study using PC88A-SIR that the zinc adsorption capacity of the SIR at the 15 th cycle of a repeated column test was almost half that of the initial cycle 14 .…”

Section: Introductionmentioning

confidence: 99%

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Improved Durability of Solvent Impregnated Resin Using Acidic Organophosphorus Extractant

Adhikari

Sato

Tanaka

2014

Resources Processing

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Solvent impregnated resins (SIRs) are an effective means for the separation of metal ions from their mixtures. However, their durability is limited due to dissolution of the extractant from the resin. Our previous studies on the repeated column test using PC88A-SIR in order to remove zinc from the model electroless nickel plating bath showed that zinc adsorption capacity gradually decreased over a few cycles. In this paper, the distribution of PC88A and Cyanex 272 between the aqueous solution and SIR or blank resin was measured batchwise. Then the column experiment was carried out, and the following two methods have been found to be effective: (i) Post-column process in which the feed solution is passed through the PC88A-SIR and then the equal weight of the blank resin (Amberlite XAD7HP) and (ii) replacement of the extractant by weaker acid, Cyanex 272. In the latter, the zinc adsorption ability of the SIR was constant for at least 37 cycles. It is suggested that the combination of these two methods significantly improves the SIR durability.

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Synthesis and Characterization of High-Stability Solvent-Impregnated Resins

Cited by 33 publications

References 17 publications

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

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

Improved Durability of Solvent Impregnated Resin Using Acidic Organophosphorus Extractant

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