Solid-Phase Extraction of Cobalt(II) from Lithium Chloride Solutions Using a Poly(vinyl chloride)-based Polymer Inclusion Membrane with Aliquat 336 as the Carrier

Kagaya, Shigehiro; Cattrall, Robert W.; Kolev, Spas D.

doi:10.2116/analsci.27.653

Cited by 25 publications

(12 citation statements)

References 26 publications

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“…Eq. (1) is also consistent with the extraction mechanism of cobalt to PVC/Aliquat PIMs recently proposed by Kagaya et al (2011). However, the stripping (or de-extraction) of cadmium from PVC/Aliquat PIMs cannot be taken in the reverse order.…”

Section: Effects Of Aliquat Content On Cd(ii) Extractionsupporting

confidence: 88%

Selective transport of Cadmium by PVC/Aliquat 336 polymer inclusion membranes (PIMs): the role of membrane composition and solution chemistry

Adelung¹,

Lohrengel²,

Nghiem³

2012

Membrane Water Treatment

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Section: Effects Of Aliquat Content On Cd(ii) Extractionsupporting

confidence: 88%

Selective transport of Cadmium by PVC/Aliquat 336 polymer inclusion membranes (PIMs): the role of membrane composition and solution chemistry

Adelung¹,

Lohrengel²,

Nghiem³

2012

Membrane Water Treatment

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“…7,13) Eventually, from these explanations and obtained results in the present experiments, we may expect that the reason for lower extraction efficiency of Co with Aliquat 336 is due to its chloride form having much weaker complexes with cobalt. 17) It is important to mention that, during the preparation of Aliquat 336 solution in Escaid 110 diluent, it was observed that two phases were formed in the organic phase when the concentration of Aliquat 336 was 0.5 kmol/m 3 .…”

Section: Reagents and Proceduressupporting

confidence: 54%

“…This preferential extraction of HCl over Co with several amine based extractants has already been reported in aqueous hydrochloric acid and its mixture with LiCl solutions. 7,13) Moreover, it can obviously be concluded that the extraction efficiency of Al was nil in all studied concentration range of Alamine 336.…”

Section: Reagents and Proceduresmentioning

confidence: 87%

Solvent Extraction Separation of Mo and Co from Chloride Solution Containing Al

2013

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Solvent extraction studies were carried out to investigate the selectivity of some extractants towards Mo and Co from synthetic acidic chloride leach solution of spent HDS catalyst. The composition of the synthetic solution was (in ppm): Mo-394, Co-119, Al-1782 and 3 kmol/m 3 of HCl. Among the several solvating and amine extractants that were tested, TOPO and Alamine 308 showed some potential towards the extraction of Mo and Co, respectively. The reasons for this greater extraction tendency of the corresponding extractants were also described thoroughly. Furthermore, the separation of Co and Al was investigated by varying the concentration of HCl. Finally, a possible extraction system for the separation of Mo and Co was presented. Our results can be utilized in developing a process for the recovery of Mo and Co from spent catalysts.

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“…21,23 A THF solution containing 3.2%(w/v) Aliquat 336 and 4.8%(w/v) PVC was prepared. The solution (10 or 4 mL) was poured into a glass ring (i.d., 75 mm) placed on a flat glass plate.…”

Section: Methodsmentioning

confidence: 99%

Improvement of Chromium(VI) Extraction from Acidic Solutions Using a Poly(vinyl chloride)-based Polymer Inclusion Membrane with Aliquat 336 as the Carrier

et al. 2017

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An important reason for the inefficient extraction of Cr(VI) from its acidic solutions into polymer inclusion membranes (PIMs), consisting of poly(vinyl chloride) as the base-polymer and Aliquat 336 as the carrier, was found to be associated with the leaching of Aliquat 336 from the PIMs into the solutions, where it subsequently reduced the anionic Cr(VI) species to cationic Cr(III) species. The PIM extraction efficiency for Cr(VI) was significantly improved by the addition of NaNO3 to the solutions, which suppressed the leaching of Aliquat 336 and the reduction of Cr(VI) to Cr(III).

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Solid-Phase Extraction of Cobalt(II) from Lithium Chloride Solutions Using a Poly(vinyl chloride)-based Polymer Inclusion Membrane with Aliquat 336 as the Carrier

Cited by 25 publications

References 26 publications

Selective transport of Cadmium by PVC/Aliquat 336 polymer inclusion membranes (PIMs): the role of membrane composition and solution chemistry

Selective transport of Cadmium by PVC/Aliquat 336 polymer inclusion membranes (PIMs): the role of membrane composition and solution chemistry

Solvent Extraction Separation of Mo and Co from Chloride Solution Containing Al

Improvement of Chromium(VI) Extraction from Acidic Solutions Using a Poly(vinyl chloride)-based Polymer Inclusion Membrane with Aliquat 336 as the Carrier

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