Selective pertraction of isomers using membranes having fixed cyclodextrin as molecular recognition sites

Touil, S.; Tingry, Sophie; Bouchtalla, S.; Deratani, A.

doi:10.1016/j.desal.2005.04.145

Cited by 21 publications

(2 citation statements)

References 24 publications

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“…Due to their structural features, they have an external hydrophilic surface and a hydrophobic cavity in which a wide variety of guest molecules may form inclusion complexes [9]. Native or polymerized CDs are widely used as a carrier in affinity membranes [10,11,12] for the removal of contaminants such as xylene [13], heavy metals [14], and hydroquinone [15].…”

Section: Introductionmentioning

confidence: 99%

New Polymer Inclusion Membrane Containing β-Cyclodextrin Polymer: Application for Pharmaceutical Pollutant Removal from Waste Water

Moulahcene

Sarakha

Bounoure

et al. 2019

IJERPH

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We present herein the preparation of novel polymer inclusion membranes (PIMs) containing insoluble β-CD polymer as a carrier, polyvinyl chloride as a base polymer, and dibuthylphtalate (DBP) as a plasticizer in varying proportions. The prepared PIMs can be obtained by a simple, fast, and high-yield preparation process. Physicochemical characterizations of such membranes occurred in a homogeneous structure. In addition, Fourier-transform infrared Spectroscopy (FT-IR) analysis found that DBP was inserted between these polymeric chains by non-covalent interactions. This led to a spacing of PVC/poly(β-cyclodextrin) chains inducing a better access of guest molecules to PIM cyclodextrins. To achieve the elimination of ibuprofen and progesterone, two examples of emerging environmental contaminants that can lead to possible alterations to aquatic environments and affect human health, the effect of three operating parameters was studied (pH, the proportion of β-cyclodextrin polymer, and wastewater agitation). The proportion of β-cyclodextrin polymer and wastewater agitation had a favorable influence on drug extraction at 10 ppm. The PIMs containing β-cyclodextrin polymer was unstable in basic conditions and was more effective at acidic pH. These initial results demonstrate the high potential for drug extraction of this polymer.

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Section: Introductionmentioning

confidence: 99%

New Polymer Inclusion Membrane Containing β-Cyclodextrin Polymer: Application for Pharmaceutical Pollutant Removal from Waste Water

Moulahcene

Sarakha

Bounoure

et al. 2019

IJERPH

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“…Polymeric pervaporation membranes are easily fabricated and have been widely researched, but their selectivities for separating xylene isomers are low. To improve their selectivity, recent studies have focused on the incorporation of complexing units such as dinitrophenyl (DNP) groups and cyclodextrins into organic-resistant polymer membranes, especially those of poly(vinyl alcohol) (PVA); − however, the separation factors of these polymer membranes require much improvement. Inorganic zeolite membranes perform with higher selectivity but exhibit decreased permeability and higher costs, thus compromising their application in industry. ,− …”

Section: Introductionmentioning

confidence: 99%

Pervaporation Separation of Xylene Isomers by Hybrid Membranes of PAAS Filled with Silane-Modified Zeolite

Dong

Zhao

et al. 2010

Ind. Eng. Chem. Res.

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Silicalite-1 zeolite was modified with 3-aminopropyltriethoxysilane (APTES) and then loaded into poly(acrylic acid) sodium (PAAS) to prepare PAAS/silicalite-1 hybrid pervaporation membranes for the separation of xylene isomer mixtures. Characterization by Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopies confirmed that chemical modification on the zeolite surface had taken place. Based on sorption equilibrium experiments, the diffusion coefficients of permeates in the membrane were obtained, and the order of the diffusion coefficients of xylene isomers was found to be D o < D m < D p . An investigation of the effects of the original versus modified zeolite loading on the pervaporation performance was performed. With the original zeolite, the permeation flux of the binary xylene mixtures showed little change, whereas the selectivity of the hybrid membrane exhibited some enhancement. After modification of the zeolite surface, the selectivity of the hybrid membrane was clearly improved, the permeation flux of the membrane decreased slightly, and the maximum separation factors of the p-/o-xylyne (R p/o ) and p-/m-xylene (R p/m ) mixtures were determined to be 2.62 and 2.68, respectively. The experimental results revealed that the modification promoted the compatibility of the PAAS and silicalite-1 zeolite interface.

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Facilitated Pervaporation

Bruggen¹

2015

Encyclopedia of Membranes

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Selective pertraction of isomers using membranes having fixed cyclodextrin as molecular recognition sites

Cited by 21 publications

References 24 publications

New Polymer Inclusion Membrane Containing β-Cyclodextrin Polymer: Application for Pharmaceutical Pollutant Removal from Waste Water

New Polymer Inclusion Membrane Containing β-Cyclodextrin Polymer: Application for Pharmaceutical Pollutant Removal from Waste Water

Pervaporation Separation of Xylene Isomers by Hybrid Membranes of PAAS Filled with Silane-Modified Zeolite

Facilitated Pervaporation

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