Fouling and Mitigation Behavior of Foulants on Ion Exchange Membranes with Surface Property in Reverse Electrodialysis

Akter, Mahamuda; Park, Jin-Soo

doi:10.3390/membranes13010106

Cited by 5 publications

(3 citation statements)

References 32 publications

(48 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bottlenecks of membrane filtration processes are fouling [ 7 ] and concentration polarization [ 8 ]. Fouling occurs when transmembrane pressure is increased to maintain a specific permeate flux or when the flux is decreased while the system is maintained at a constant pressure [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Organic Fouling in an Ultrafiltration Cell Using Different Three-Dimensional Printed Turbulence Promoters

et al. 2023

View full text Add to dashboard Cite

Designing turbulence promoters with optimal geometry and using them for ultrafiltration systems has been a key challenge in mitigating membrane fouling. In this study, six different turbulence promoters were created using three-dimensional printing technology and applied in dead-end ultrafiltration. Three-dimensional-printed (3DP) turbulence promoter configurations were integrated into a classical batch ultrafiltration cell. The effects of these configurations and the stirring speeds on the permeate filtration flux, organic rejections, and membrane resistances were investigated. The fouling control efficiency of the 3DP promoters was evaluated using two polyethersulfone membranes in a stirred ultrafiltration cell with model dairy wastewater. The Hermia and resistance-in-series models were studied to further investigate the membrane fouling mechanism. Of the Hermia models, the cake layer model best described the fouling in this membrane filtration system. It can be concluded that the 3DP turbulence promoters, combined with intense mechanical stirring, show great promise in terms of permeate flux enhancement and membrane fouling mitigation. Using a well-designed 3DP turbulence promoter improves the hydrodynamic flow conditions on the surface of the stirred membrane separation cells based on computational fluid dynamics modeling. Therefore, the factors effecting the fabrication of 3DP turbulence promoters are important, and further research should be devoted to revealing them.

show abstract

Section: Introductionmentioning

confidence: 99%

Modeling of Organic Fouling in an Ultrafiltration Cell Using Different Three-Dimensional Printed Turbulence Promoters

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In [ 23 ], a new approach is provided for the improvement of ion conductivity at a low ion content by introducing perfluorinated branch chains—putting forward a standardized method for the preparation of AEMs with high performance. In the study [ 24 ], two different types of ion-exchange membranes were used to investigate the tendency of membrane fouling with respect to surface roughness and hydrophilicity. The membranes with a rough surface showed a higher fouling tendency than those with a smooth surface in the short-term continuous fouling tests [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…In the study [ 24 ], two different types of ion-exchange membranes were used to investigate the tendency of membrane fouling with respect to surface roughness and hydrophilicity. The membranes with a rough surface showed a higher fouling tendency than those with a smooth surface in the short-term continuous fouling tests [ 24 ]. During the cyclic operations of fouling and mitigation of the commercially available membranes, the irregularities of the rough membrane surface caused a rapid increase in electrical resistance from the beginning of the fouling due to excessive adsorption on the surface; however, the fouling was easily mitigated by the hydrophilic surface.…”

Section: Introductionmentioning

confidence: 99%

Anion-Exchange Membrane “Polikon A” Based on Polyester Fiber Fabric (Functionalized by Low-Temperature High-Frequency Plasma) with Oxidized Metal Nanoparticles

Terin,

Kardash,

Ainetdinov

et al. 2023

Membranes

View full text Add to dashboard Cite

An experimental laboratory set of samples of composite heterogeneous anion-exchange membranes was obtained by us for the development of our original method of polycondensation filling. Anion-exchange membranes were prepared on plasma-treated and non-plasma-treated polyester fiber fabrics. The fabric was treated with low-temperature argon plasma at a power of 400 W for 10 min at a pressure of 5 × 10−5 mbar. On the surface and bulk of the polyester fiber, a polyfunctional anionite of mixed basicity was synthesized and formed. The anion-exchange membrane contained secondary and tertiary amino groups and quaternary ammonium groups, which were obtained from polyethylene polyamines and epichlorohydrins. At the stage of the chemical synthesis of the anion matrix, oxidized nanoparticles (~1.5 wt.%) of silicon, nickel, and iron were added to the monomerization composition. The use of ion-plasma processing of fibers in combination with the introduction of oxidized nanoparticles at the synthesis stage makes it possible to influence the speed and depth of the synthesis and curing processes; this changes the formation of the surface morphology and the internal structure of the ion-exchange polymer matrix, as well as the hydrophobic/hydrophilic balance and—as a result—the different operational characteristics of anion-exchange membranes.

show abstract

Improved Power Production in Reverse Electrodialysis Stacks with Ion‐Permselective Woven Net Spacers

Li,

Zhang,

Zheng

et al. 2024

Energy Tech

View full text Add to dashboard Cite

In traditional reverse electrodialysis (RED) stacks, the output power is severely lost due to the shadow effect caused by the nonpermselective spacers. To inhibit the spacer shadow effect, a design on ion‐permselective woven net spacer is proposed. By combining the linear sweep voltammetry and electrochemical impedance spectroscopy methods, the effectiveness of permselective woven net spacer is validated together with the shadow effect and concentration polarization measured quantitatively. Additionally, their influence on stack resistance and power production is investigated under various factors. When contrasted to nonpermselective spacers, the use of permselective woven net spacers reduces the spacer shadow effect by 90% whereas also exacerbating the concentration polarization. This results in a higher power density due to a dramatic reduction in resistance. However, compared with permselective spacers, the permselective woven net spacers increase the power density due to its weaker concentration polarization. The factors including the solution concentration, temperature, and spacer thickness have a considerable influence on the power production of stack. Especially, increasing the concentration of concentrated solution alone is most beneficial to improving the output power while the impact of spacer thickness is the weakest.

show abstract

Fouling and Mitigation Behavior of Foulants on Ion Exchange Membranes with Surface Property in Reverse Electrodialysis

Cited by 5 publications

References 32 publications

Modeling of Organic Fouling in an Ultrafiltration Cell Using Different Three-Dimensional Printed Turbulence Promoters

Modeling of Organic Fouling in an Ultrafiltration Cell Using Different Three-Dimensional Printed Turbulence Promoters

Anion-Exchange Membrane “Polikon A” Based on Polyester Fiber Fabric (Functionalized by Low-Temperature High-Frequency Plasma) with Oxidized Metal Nanoparticles

Improved Power Production in Reverse Electrodialysis Stacks with Ion‐Permselective Woven Net Spacers

Contact Info

Product

Resources

About