Selectivity of anion exchange membrane modified with polyethyleneimine

Guesmi, Fatma; Hannachi, Ch.; Hamrouni, Béchir

doi:10.1007/s11581-011-0627-2

Cited by 30 publications

(25 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results were also reported by different authors [16,21] where they found that the modification of anion exchange membrane is more effective with a high concentration and a low pH.…”

Section: Effect Of Modification On Ion Exchange Equilibriumsupporting

confidence: 85%

“…To do this, the solution containing PEI was mixed with a cupric sulfate solution. The maximum absorption of the copper-PEI complex was located at 326 nm [21].…”

Section: Methodsmentioning

confidence: 97%

“…In order to improve the ion exchange membrane selectivity, Guesmi et al [21] modified the AMX anion exchange membrane by adsorption of polyethyleneimine. Obtained results showed that for the modified membrane the selectivity towards sulfate ion decreased and the modified membrane became more selective towards monovalent anions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Chérif¹,

Guesmi²,

Missaoui³

et al. 2013

JWARP

View full text Add to dashboard Cite

In order to improve the selectivity of anion exchange resin, the surface of gel type anion exchange resin was modified with polyethyleneimine (PEI). In the proposed work an attempt to the utilization of commercial anion exchange resin modified by adsorption of polyethyleneimine was investigated. Many conditions of modification of anion exchange resin surface were studied. The influent parameters on the DOWEX 1X8 resin modification were determined using a factorial experimental design. The ion exchange reactions were studied for modified and unmodified resin and electrolyte solutions containing 2 3 Cl , NO and SO 4    . All experiments were performed at constant ionic strength I = 0.3 mol·L −1 and constant temperature T = 298 K. Ionic exchange isotherms were established for the binary systems: 2 2 3 4 NO SO .   3 4Cl NO , Cl SO andThe obtained results show that nitrate ion was more sorbed than chloride and sulfate. The order of preference for the anions studied in this investigation is:All the results given by this resin were compared with those obtained with the AMX anion exchange membrane. Selectivity coefficients and thermodynamic constants for the three binary systems and for the two resins were determined. The modified resin became more selective towards monovalent anions.

show abstract

“…These results were also reported by different authors [16,21] where they found that the modification of anion exchange membrane is more effective with a high concentration and a low pH.…”

Section: Effect Of Modification On Ion Exchange Equilibriumsupporting

confidence: 85%

“…To do this, the solution containing PEI was mixed with a cupric sulfate solution. The maximum absorption of the copper-PEI complex was located at 326 nm [21].…”

Section: Methodsmentioning

confidence: 97%

See 1 more Smart Citation

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Chérif¹,

Guesmi²,

Missaoui³

et al. 2013

JWARP

View full text Add to dashboard Cite

show abstract

“…Though a satisfactory permselectivity can be acquired, the significant enhancement of membrane resistance seems to be unavoidable due to the loss of ion exchange capacity (IEC). Furthermore, some modification schemes, such as adsorption [9][10][11], coating [12][13][14] and layer-by-layer assembly [15][16], for attaching an oppositely charged layer or a relatively hydrophobic layer to membrane surface were put forward. However, ones have to worry about the long-term stability of the permselectivity because of only the weak interaction existing between the modified layer and base membrane.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Anion Exchange Membrane by Covalent Grafting for Imparting Permselectivity between Specific Anions

Wang

Jia

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

“…Traditionally, designing a layer with proper negative charge and dense architecture on the surface of AEMs appears to be an effective way to improve the monovalent anions’ selectivity. Such modifications could involve a cross-linked monovalent anion permselectivity layer or a layer-by-layer modification and these methods have achieved excellent results of the monovalent anions selectivity141516. However, the existence of the membrane fouling on the membrane surface may hinder the monovalent selectivity.…”

mentioning

confidence: 99%

Mimicking the cell membrane: bio-inspired simultaneous functions with monovalent anion selectivity and antifouling properties of anion exchange membrane

Zhao

Liu

Tang

et al. 2016

Sci Rep

View full text Add to dashboard Cite

A new bio-inspired method was applied in this study to simultaneously improve the monovalent anion selectivity and antifouling properties of anion exchange membranes (AEMs). Three-layer architecture was developed by deposition of polydopamine (PDA) and electro-deposition of N-O-sulfonic acid benzyl chitosan (NSBC). The innermost and outermost layers were PDA with different deposition time. The middle layer was prepared by NSBC. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed that PDA and NSBC were successfully modified on the surfaces of AEMs. The contact angle of the membranes indicated an improved hydrophilicity of the modified membranes. A series of electrodialysis experiments in which Cl−/SO42− separation was studied, demonstrating the monovalent anion selectivity of the samples. The Cl−/SO42− permselectivity of the modified membranes can reach up to 2.20, higher than that of the commercial membrane (only 0.78) during 90 minutes in electrodialysis (ED). The increase value of the resistance of the membranes was also measured to evaluate the antifouling properties. Sodium dodecyl benzene sulfonate (SDBS) was used as the fouling material in the ED process and the membrane area resistance of modified membrane increase value of was only 0.08 Ωcm2 30 minutes later.

show abstract

Selectivity of anion exchange membrane modified with polyethyleneimine

Cited by 30 publications

References 31 publications

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Surface Modification of Anion Exchange Membrane by Covalent Grafting for Imparting Permselectivity between Specific Anions

Mimicking the cell membrane: bio-inspired simultaneous functions with monovalent anion selectivity and antifouling properties of anion exchange membrane

Contact Info

Product

Resources

About