Gas permeation behavior of CTA polymer inclusion membrane (PIM) containing an acidic carrier for metal recovery (DEHPA)

Kebiche-Senhadji, Ounissa; Bey, Said; Clarizia, Gabriele; Mansouri, Lynda; Benamor, M.

doi:10.1016/j.seppur.2011.03.032

Cited by 28 publications

(13 citation statements)

References 49 publications

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“…For example, the stretching vibration of the carbonyl groups is shifted from 1743 cm -1 to 1753 cm -1 and the absorption of the C-O bonds is observed at 1230 cm -1 and 1051 cm -1 instead of 1228 cm -1 and Wavenumber (cm 11 1045 cm -1 , respectively. This shift is explained by the bond length decrease due to the intermolecular interaction of the functional polymer and ionic liquid groups [41][42][43][44]. In our case, this displacement to the higher wavenumbers is provoked by the interactions of the negatively charged carboxyl groups of CTA and positively charged ammonium groups of Aliquat 336.…”

Section: Transport Studiesmentioning

confidence: 57%

Polymer inclusion membranes based on CTA/PBAT blend containing Aliquat 336 as extractant for removal of Cr(VI): Efficiency, stability and selectivity

Sellami

Kebiche-Senhadji

Marais

et al. 2019

Reactive and Functional Polymers

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Cellulose triacetate (CTA) and poly(butylene adipate-co-terephthalate) (PBAT)-based polymer inclusion membranes (PIMs) containing ionic liquid (tricaprylmethylammonium chloride (Aliquat 336)) as the carrier extractant were obtained for the facilitated and selective transport of Cr(VI) ions. The composition of PIMs was optimized in terms of the CTA/PBAT ratio. The obtained membranes were investigated using different techniques in order to show the influence of the membrane composition and the ionic liquid presence on the PIM resulting properties. The infrared analysis confirmed the presence of the intermolecular interactions of the hydroxyl groups of CTA with the carboxyl groups of PBAT and of the negatively charged carboxyl groups of CTA with the positively charged ammonium groups of Aliquat 336. The water contact angle measurements highlighted that the Aliquat 336 and PBAT presence modified the membrane hydrophobic/hydrophilic character. Moreover, it was shown that PIM containing the equivalent content of CTA and PBAT (35/35 wt.%/wt.%) with 30 wt.% of Aliquat 336 revealed the optimized composition and was used for the Cr(VI) ions transport measurements. It was found that this PIM transported more than 99% of Cr(VI) in only 6h and accumulated less than 5% of Cr(VI) ions with a high initial flux. For the first time it is shown that the selective Cr(VI) transport through blend PIM with reduced extractant content and without plasticizer is more efficient compared to common PIMs. Besides, the stability of obtained blend PIMs was confirmed by carrying out continuous transport studies over a long period of time (more than 120h).

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Section: Transport Studiesmentioning

confidence: 57%

Polymer inclusion membranes based on CTA/PBAT blend containing Aliquat 336 as extractant for removal of Cr(VI): Efficiency, stability and selectivity

Sellami

Kebiche-Senhadji

Marais

et al. 2019

Reactive and Functional Polymers

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“…Membrane‐separation technology has evolved as a rapidly growing field during the past few decades, and it has been approved economically and technically as a favorable and competent separation process compared to the other separation techniques in use because membrane technology offers numerous advantages over other technologies, including a low energy requirement, smaller footprint, low capital and operation costs, environmental friendliness, and flexibility in handling at a higher flow rate, pressure, and various feed compositions. Membrane gas separation, a relatively young technology, has emerged in the last 15 years to successfully compete with other well‐established industrial gas‐separation processes, such as cryogenic distillation, absorption, and pressure swing adsorption .…”

Section: Introductionmentioning

confidence: 96%

Preparation, characterization, and applicability of novel calix[4]arene‐based cellulose acetate membranes in gas permeation

Farrukh

Minhas

Hussain

et al. 2013

J of Applied Polymer Sci

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Cellulose acetate (CA) is well known glassy polymer used in the fabrication of gas-separation membranes. In this study, 5,11,17,23-tetrakis(N-morpholinomethyl)-25,26,27,28-tetrahydroxycalix[4]arene (CL) was blended with CA to study the gaspermeation behavior for CO 2 , N 2 , and CH 4 gases. We prepared the pure CA and CA/CL blended membranes by following a diffusion-induced phase-separation method. Three different concentrations of CL (3, 10, and 30 wt %) were selected for membrane preparation. The CA/CL blended membranes were then characterized via Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction analysis. The homogeneous blending of CL and CA was confirmed in the CA/CL blended membranes by both SEM and AFM analysis. In addition to this, the surface roughness of the CA/CL blended membranes also increased with increasing CL concentration. FTIR analysis described the structural modification in the CA polymer after it was blended with CL too. Furthermore, CL improved the tensile strength of the CA membrane appreciably from 0.160 to 1.28 MPa, but this trend was not linear with the increase in the CL concentration. CO 2 , CH 4 , and N 2 gases were used for gas-permeation experiments at 4 bars. With the permeation experiments, we concluded that permeability of N 2 was higher in comparison to those of CO 2 and CH 4 through the CA/CL blended membranes. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39985.

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“…Several research papers were found regarding the fabrication and investigation of gas transport properties of different CAs membranes (CMA, CDA, and CTA) [13][14][15][16][17][18][19][20][21][22][23][24]. Houde et al studied the effect of exposing the CDA membrane to high pressure CO 2 prior to the permeability measurements.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Blended Membranes of Cellulose Acetate with Variable Degree of Acetylation for CO2/CH4 Separation

et al. 2021

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The separation and capture of CO2 have become an urgent and important agenda because of the CO2-induced global warming and the requirement of industrial products. Membrane-based technologies have proven to be a promising alternative for CO2 separations. To make the gas-separation membrane process more competitive, productive membrane with high gas permeability and high selectivity is crucial. Herein, we developed new cellulose triacetate (CTA) and cellulose diacetate (CDA) blended membranes for CO2 separations. The CTA and CDA blends were chosen because they have similar chemical structures, good separation performance, and its economical and green nature. The best position in Robeson’s upper bound curve at 5 bar was obtained with the membrane containing 80 wt.% CTA and 20 wt.% CDA, which shows the CO2 permeability of 17.32 barrer and CO2/CH4 selectivity of 18.55. The membrane exhibits 98% enhancement in CO2/CH4 selectivity compared to neat membrane with only a slight reduction in CO2 permeability. The optimal membrane displays a plasticization pressure of 10.48 bar. The newly developed blended membranes show great potential for CO2 separations in the natural gas industry.

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Gas permeation behavior of CTA polymer inclusion membrane (PIM) containing an acidic carrier for metal recovery (DEHPA)

Cited by 28 publications

References 49 publications

Polymer inclusion membranes based on CTA/PBAT blend containing Aliquat 336 as extractant for removal of Cr(VI): Efficiency, stability and selectivity

Polymer inclusion membranes based on CTA/PBAT blend containing Aliquat 336 as extractant for removal of Cr(VI): Efficiency, stability and selectivity

Preparation, characterization, and applicability of novel calix[4]arene‐based cellulose acetate membranes in gas permeation

Performance Analysis of Blended Membranes of Cellulose Acetate with Variable Degree of Acetylation for CO2/CH4 Separation

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