Fouling of anion-exchange membranes in electrodialysis of aromatic amino acid solution

Bukhovets, A.; Eliseeva, T. V.; Oren, Yoram

doi:10.1016/j.memsci.2010.08.030

Cited by 71 publications

(36 citation statements)

References 24 publications

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“…There are many methods and theoretical studies on treating the effect of parameters on the permselectivity of anions and membrane fouling problems. Most organic foulants have the negative charge which gives the research direction of antifouling properties of AEMs22 and many attempt to increase the function of antifouling of AEMs have reported17404142. There are many reports that PDA coating can enhance the anti-organic fouling performance of a commercial AEM by imparting high hydrophilicity and negative charge on the AEM surface434445.…”

Section: Resultsmentioning

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

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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.

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Section: Resultsmentioning

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

show abstract

“…Large ions present in solutions may be deposited on the membrane surface or into pores, causing the so called "fouling" of the membranes [30][31][32][33][34]. In addition, anion-exchange membranes, which have positively charged groups on their surface, might be specially affected due to the fact that most foulants are negatively charged.…”

Section: Study Of Possible Membrane Foulingmentioning

confidence: 99%

Application of electrodialysis for the treatment of almond industry wastewater

Valero

García-García

Expósito

et al. 2015

Journal of Membrane Science

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In this work, electrodialysis has been proved to be a suitable technique for decreasing the conductivity of a real wastewater from an almond industry, which has been previously treated by electrocoagulation (EC) and electrooxidation (EO). A seven-cell electrodialyzer, with total active membrane area of 1400 cm 2 , was employed and several parameters, as the limiting current density, were determined. A method for measuring voltage across the membranes was developed, in order to control membrane fouling. The method consisted of capillaries inserted into the solution compartments and connected to a high impedance voltmeter. A study of the reuse of the concentrate solution was made, and it was stated that it can be concentrated ten times. The treatment of the wastewater was performed at different voltages (7-16 V) to reach values of conductivity of the diluate of 0.5 mS cm -1 . After that, the scaling up to a pre-industrial scale was performed by using a seventy-cell electrodialyzer, with total active membrane area of 3.5 m 2 . The process was performed by applying voltages of 20-70 V and a final conductivity of the diluate of 0.5 mS cm -1 was achieved. The electric energy consumption was calculated in every case.2

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“…The resistance of each cell pair is inclusive of the resistances of individual membranes, the solutions within the chambers and also the electrical resistance of the boundary layers formed at the membrane-solution interfaces. Generally, a voltage of 0-100 V is adequate to attain currents at 0-20 A due to the high conductivity of the feed solution [22][23][24].…”

Section: Voltage (U)mentioning

confidence: 99%

Electrodialysis aided desalination of crude glycerol in the production of biodiesel from oil feed stock

et al. 2015

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Fouling of anion-exchange membranes in electrodialysis of aromatic amino acid solution

Cited by 71 publications

References 24 publications

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

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

Application of electrodialysis for the treatment of almond industry wastewater

Electrodialysis aided desalination of crude glycerol in the production of biodiesel from oil feed stock

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