The development of new supported liquid membranes (SLMs) with agents: Methyl cholate and resorcinarene as carriers for the removal of dichromate ions (Cr2O72−)

Benjjar, Abdelkhalek; Eljaddi, Tarik; Kamal, Oussama; Touaj, K.; Lebrun, Laurent; Hlaı̈bi, Miloudi

doi:10.1016/j.jece.2013.10.003

Cited by 16 publications

(11 citation statements)

References 43 publications

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“…The analysis of the results shows that the facilitated extraction process VO 2 + ions is a phenomenon governed by a structural term related to the nature and the structure of the interaction site of each extractive agents; then the influence of energetic term is negligible. On the other hand, recent studies [5,6,30,31] and this analysis confirm previous results which indicate that the substrate movement across each of the developed membranes cannot be a pure diffusion movement (way A), but it takes place by successive jumps of one site to an another of used extractive agent, via interaction reactions of VO 2 + ions with the extractive agent according to the way B indicated by the diagram in Figure 15.…”

Section: Influence Of the Temperaturesupporting

confidence: 88%

Process of Facilitated Extraction of Vanadium Ions through Supported Liquid Membranes: Parameters and Mechanism

Kamal

Eljaddi

Atmani

et al. 2017

Advances in Materials Science and Engineering

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To conduct experiments related to the facilitated extraction phenomenon of vanadium ions (VO2+), three supported liquid membranes (SLMs) were prepared, each containing 0.01 M of methyl cholate (MC), resorcinarene (RESO), or trioctylamine (TOA) as extractive agents. Kinetic and thermodynamic models were developed, based on the interaction of the substrate (VO2+) with the extractive agent T and the diffusion of the formed entity (TS) through the membrane. The experimental results verify the models, and to determine, macroscopic parameters, permeabilities (P) and initial fluxes (J0), and microscopic parameters, association constants (Kass) and apparent diffusion coefficients (D⁎) related to formed entities (TS) and their diffusion through the membrane organic phase. The experimental results indicate that the mechanism on the migration of the VO2+ ions through the membrane organic phase is based on the successive jumps of substrate, from one site to another of the extractive agent. To explain these results and understand the mechanism, we studied influence of temperature factor, and we determined activation parameters (Ea, ΔH≠, and ΔS≠). The results show that this extraction phenomenon is governed by a structural term. Therefore, the membrane performance changes according to nature and structure of the association site presented by each of extractive agents.

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Section: Influence Of the Temperaturesupporting

confidence: 88%

Process of Facilitated Extraction of Vanadium Ions through Supported Liquid Membranes: Parameters and Mechanism

Kamal

Eljaddi

Atmani

et al. 2017

Advances in Materials Science and Engineering

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“…Moreover, recent studies [26,22] confirm the previous results found which indicate that the substrate movement across each studied membranes cannot be a pure diffusion movement (way A), but it takes place by successive jumps from one site to an another of used extractive agent, via interaction reactions of LAS with the extractive agent MC according to (way B) indicated by the diagram in Figure 9. …”

Section: Thermodynamic Parameters Ea ∆Hsupporting

confidence: 84%

Facilitated Transport of Lysine Acetylsalicylate Through Supported Liquid Membrane Using Methyl Cholate as Carrier: Parameters and Mechanism

Kamal¹

2017

AJCHE

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Transport of lysine acetylsalicylate (LAS) through supported liquid membrane was investigated using methyl cholate (MC) as extractive agent. Kinetic and thermodynamic models were developed, based on the interaction of the substrate LAS with the extractive agent T, and the diffusion of the formed entity (TS) through the membrane. The experimental results verify the models and enable the determination of macroscopic parameters (permeabilities (P) and initial fluxes (J 0 )), as well as microscopic parameters (association constants (K ass ), and apparent diffusion coefficients (D*)), relating to formed entity (TS) and its diffusion through the membrane organic phase. Parameters such as initial concentration of the substrate in the feed phase, pH of the feed and stripping phases and temperature of the extraction medium were studied. The results obtain indicate that the mechanism of the migration of LAS through the membrane organic phase cannot be a pure diffusion movement but it takes place by successive jumps from one site to another of the extractive agent, via interaction reactions with LAS.

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“…F solvent extraction system, there is formation of a complex with good stability. However for the SLM system, there is an entity with low stability [26,27]. In other words, the entities formed by interaction of Eu ions with D2EHPA and Cyanex272 are not intical for the both processes.…”

Section: Solvent Extraction Studiesmentioning

confidence: 99%

Intensification of Europium extraction through a supported liquid membrane using mixture of D2EHPA and Cyanex272 as carrier

Zaheri

Abolghasemi

Maraghe

et al. 2015

Chemical Engineering and Processing: Process Intensification

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The development of new supported liquid membranes (SLMs) with agents: Methyl cholate and resorcinarene as carriers for the removal of dichromate ions (Cr2O72−)

Cited by 16 publications

References 43 publications

Process of Facilitated Extraction of Vanadium Ions through Supported Liquid Membranes: Parameters and Mechanism

Process of Facilitated Extraction of Vanadium Ions through Supported Liquid Membranes: Parameters and Mechanism

Facilitated Transport of Lysine Acetylsalicylate Through Supported Liquid Membrane Using Methyl Cholate as Carrier: Parameters and Mechanism

Intensification of Europium extraction through a supported liquid membrane using mixture of D2EHPA and Cyanex272 as carrier

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