Removal of chromium(III) from acidic aqueous solution by polymer inclusion membranes with D2EHPA and Aliquat 336

Kończyk, Joanna; Kozłowski, Cezary A.; Walkowiak, W.

doi:10.1016/j.desal.2010.06.061

Cited by 73 publications

(28 citation statements)

References 38 publications

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“…(13) was equal to 114 ± 5 and 113 ± 5 kJ/mol respectively for 0.002 and 0.006 mol/dm 3 initial Cr(III) ions concentrations. These values are consistent with that obtained by Kończyk et al [17] and Lazarova et al [20] for separation of the metal ions by supported liquid membranes systems. It is known that the Ea value is used as a criterion in the classification of the step-controlled mechanism.…”

Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemsupporting

confidence: 82%

“…The study allowed to determine the activation energy, which confirmed that transport was limited by the kinetics reaction between the carrier and chromium(III) ions at the interface or by the diffusion of Cr(III) through the membrane [17,18].…”

Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemmentioning

confidence: 96%

“…Figure 5 shows the initial flux variation for Cr(III) transport as a function of the process temperature. The relation log J Z versus 1/T (a straight line) indicates that the process is controlled by chemical reaction and the constant rate is strongly dependent on temperature regardless of the initial concentration of Cr(III) ions [17,21].…”

Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemmentioning

confidence: 99%

“…where k Z -penetration coefficient of the Cr(III) ion into the membrane, C P -initial concentration of the Cr(III) ion (mol/dm 3 ), J Z -flux of the Cr(III) ions penetrating into the membrane (mo/m 2 /s), V Z -volume of the feed phase (dm 3 ), F Z/M -the active Surface of the membrane (m 2 ), t-process time (h) The knowledge of initial flux values at different temperatures allowed to establish the activation energy of transport process through DCSLM using the Arrhenius equation [17,18]:…”

Section: Theorymentioning

confidence: 99%

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The possibility of using a mathematical model based on consecutive first-order reactions to describe the Cr(III) ions pertraction in DCSLM system

2017

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This paper discusses the use of double-carrier supported liquid membrane (DCSLM) for extraction of Cr(III) ions, using the D2EHPA/CYANEX272 mixture as the carriers. Based on the calculated value of the activation energy and on the assumption that the result of transport process in the DCSLM, in particular, depends on the accumulation of intermediate products in the membrane, the mathematical model of the chromium(III) ions separation based on consecutive first-order reactions has been proposed. Transport kinetics of chromium(III) in studied system for different carriers concentrations ratio and their comparison with theoretical prediction was analyzed. The obtained results confirmed the presence of a synergistic effect of selected carriers in DCSLM. Verification of the proposed model has been carried out in the article. Mathematical model describes correctly the membrane transport process only for most effective carriers ratio. It was found that depending on the carriers ratio in DCSLM the transport processes may be controlled by both chemical reaction and diffusion. The described model can be a useful tool for quickly and approximate determination of the transport process parameters in experimental works but is too simple to correctly describe the Cr(III) ions pertraction in supported liquid membrane system under the full range of process parameters (especially concentrations and proportions of the used carrier).

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Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemsupporting

confidence: 82%

Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemmentioning

confidence: 96%

Section: Temperature Effect On Chromium(iii) Transport In Dcslm Systemmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

See 2 more Smart Citations

The possibility of using a mathematical model based on consecutive first-order reactions to describe the Cr(III) ions pertraction in DCSLM system

2017

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“…Feed composition: 100 µg L −1 As(V) in GW1 (50 mL). Additionally, different authors have reported the great influence of PIM thickness when metal transport is rate-limited by the diffusion of the metal across the membrane [15][16][17]. However, the reduction of the membrane thickness, using the PIM-based device under the selected conditions, did not enhance the As(V) preconcentration, which can be explained by diffusion through the membrane not being the only rate-limiting factor as diffusion in the acceptor solution is also involved [11].…”

Section: Membrane Characteristicsmentioning

confidence: 73%

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

Vera

Anticó

Fontàs

2018

Water

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A polymer inclusion membrane (PIM) containing the ionic liquid methyltrioctylammonium chloride (Aliquat 336) as the carrier has been used satisfactorily for the preconcentration of arsenate present in groundwater samples, allowing its determination by a simple colorimetric method. The optimization of different chemical and physical parameters affecting the membrane performance allowed its applicability to be broadened. The transport of As(V) was not affected by the polymer used to make the PIM (cellulose triacetate (CTA) or poly(vinyl chloride) (PVC)) nor the thickness of the membrane. Moreover, the use of a 2 M NaCl solution as a stripping phase was found to allow the effective transport of arsenate despite the presence of other major anions in groundwater. Using the PIM for the analysis of different groundwaters spiked at 100 µg L −1 resulted in recoveries from 79% to 124% after only 5 h of contact time. Finally, the validated PIM-based method was successfully applied to the analysis of waters containing naturally occurring arsenate.

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Effect of the structure of polymer inclusion membranes on zn(II) transport from chloride aqueous solutions

Baczyńska

Regel‐Rosocka

Nowicki

et al. 2015

J of Applied Polymer Sci

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This article presents application of polymer inclusion membranes (PIM) containing polymer matrices: cellulose triacetate (CTA) or poly(vinyl) chloride (PVC), o-nitrophenyloctyl ether (NPOE) as a plasticizer and phosphonium ionic liquids, i.e., trihexyltetradecylphosphonium chloride (Cyphos IL 101), bis(2,4,4-trimethylpentyl)phosphinate (Cyphos IL 104) and tributyltetradecylphosphonium chloride (Cyphos IL 167), as carriers for Zn(II) transport from chloride medium. Cyphos IL167 application as an ion carrier in PIMs is reported for the first time. The membrane composition is found to affect Zn(II) transport significantly. SEM and AFM images show the differences in the surface morphology of PVC and CTA based membranes. Better transport abilities of CTA membranes (Zn(II) recovery factors exceed 80%) compared with those of PVC, indicate that the structural differences between the two polymers play a crucial role for the membrane permeability. The best initial flux and permeability coefficient are obtained for the membranes with Cyphos IL 101 and Cyphos IL 104 as carriers.

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Removal of chromium(III) from acidic aqueous solution by polymer inclusion membranes with D2EHPA and Aliquat 336

Cited by 73 publications

References 38 publications

The possibility of using a mathematical model based on consecutive first-order reactions to describe the Cr(III) ions pertraction in DCSLM system

The possibility of using a mathematical model based on consecutive first-order reactions to describe the Cr(III) ions pertraction in DCSLM system

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

Effect of the structure of polymer inclusion membranes on zn(II) transport from chloride aqueous solutions

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