Stabilization of solvent impregnated resins (SIRs) by coating with water soluble polymers and chemical crosslinking

Trochimczuk, Andrzej W.; Kabay, Nalan; Arda, Müşerref; Streat, M.

doi:10.1016/j.reactfunctpolym.2003.12.011

Cited by 71 publications

(42 citation statements)

References 19 publications

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“…In order to prevent extractant loss from SIRs, different approaches have been applied to stabilize the adsorption capacities of SIRs [20][21][22]. In this paper, a solvent impregnated resin (SIR) with sec-octylphenoxy acetic acid (CA-12)…”

Section: Introductionmentioning

confidence: 99%

Recovery of Indium(III) from a Hydrochloric Acid Medium with Two Types of Solvent Impregnated Resins Containing Sec-octylphenoxy Acetic Acid

Liu

Zhu

et al. 2014

SERDJ

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A solvent impregnated resin (SIR) with sec-octylphenoxy acetic acid (CA-12) impregnated on a styrene-divinylbenzene copolymer support (HZ818) was first prepared. To improve the stability of the first SIRs for indium adsorption, a novel type of SIR (NSIR) had been prepared by forming a PVA-boric acid protective layer on the first SIR containing CA-12. The NSIR and SIR were characterized, and their adsorption behavior for indium(III) were compared by batch and column methods in a hydrochloric acid medium. Both the NSIR and SIR showed high adsorption capacities for In(III) at pH 3.0, and the maximum adsorption capacities increased with temperature. The Langmuir isotherm and pseudo second-order model fit the experiment data well at different temperatures. The NSIR showed better stability and reusability than the SIR. It is possible to separate In(III) from a mixed solution containing Zn(II), Cu(II), Cd(II) and In(III) at pH 3.0 from hydrochloric acid medium with SIR and NSIR.

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Section: Introductionmentioning

confidence: 99%

Recovery of Indium(III) from a Hydrochloric Acid Medium with Two Types of Solvent Impregnated Resins Containing Sec-octylphenoxy Acetic Acid

Liu

Zhu

et al. 2014

SERDJ

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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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Stabilization of solvent impregnated resins (SIRs) by coating with water soluble polymers and chemical crosslinking

Cited by 71 publications

References 19 publications

Recovery of Indium(III) from a Hydrochloric Acid Medium with Two Types of Solvent Impregnated Resins Containing Sec-octylphenoxy Acetic Acid

Recovery of Indium(III) from a Hydrochloric Acid Medium with Two Types of Solvent Impregnated Resins Containing Sec-octylphenoxy Acetic Acid

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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