Arch-type feed spacer with wide passage node design for spiral-wound membrane filtration with reduced energy cost

Yu, Jia; Chen, Dengyue; Wu, Jun; Wang, Bing; Field, Robert W.

doi:10.1016/j.desal.2022.115980

Cited by 10 publications

(3 citation statements)

References 52 publications

(67 reference statements)

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“…Another contributing factor to the superior antifouling performance of the integrated membranes with the porous PES feed spacer, compared to the traditional nonporous PLA feed spacer (i.e., FS18 membrane) with a flat surface, is the heightened shear stress exerted on the patterns themselves. The presence of shear stresses is evident on the peaks of the traditional feed spacers, 37,56,57 as depicted in Figure 9, owing to the no-slip condition. However, the advantages of such stresses remain underutilized due to the nonporous nature of the PLA spacer.…”

Section: Antifouling Performance and Membrane Durabilitymentioning

confidence: 99%

Integration of Porous and Permeable Poly(ether sulfone) Feed Spacer onto Membrane Surfaces via Direct 3D Printing

Ibrahim,

Hilal

2024

ACS Appl. Eng. Mater.

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This research details the use of direct three-dimensional (3D) printing technology to create membranes with integrated square-shaped porous feed spacers made of poly(ether sulfone) (PES). Various concentrations of PES (18, 20, 22, 25, and 28 wt %) in the 3D printing solution were employed to evaluate the impact of solution viscosity on 3D-printed spacer fidelity and membrane performance. Comparative analysis with the FS18 membrane, which utilizes a plastic polylactic acid (PLA) feed spacer and flat PES membrane, revealed a substantial improvement in pure water flux (31.0–130%) for the integrated membranes, mainly attributed to the augmented effective surface area (2.41–39.7%) created by the porous PES feed spacer patterns. However, this enhancement is viscosity-dependent, as evidenced by the reduced spacer pattern fidelity in the P18 (18 wt % PES) membrane with low-viscosity 3D printing solution, leading to diminished overall membrane effectiveness. Remarkably, when compared to the flat membrane, the integrated membranes (except P18 membrane) demonstrated better antifouling behavior, regardless of whether a plastic PLA feed spacer was used or not. This is attributed to elevated shear stresses on the porous spacer pattern peaks and induced turbulence, acting as a protective shield against severe membrane fouling. Overall, this study highlights the effectiveness of direct 3D printing in seamlessly integrating porous PES feed spacers onto membrane surfaces, offering potential for optimization and exploration of diverse polymers in the 3D printing process.

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Section: Antifouling Performance and Membrane Durabilitymentioning

confidence: 99%

Integration of Porous and Permeable Poly(ether sulfone) Feed Spacer onto Membrane Surfaces via Direct 3D Printing

Ibrahim,

Hilal

2024

ACS Appl. Eng. Mater.

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“…Advanced modelling, simulation, manufacturing, and characterization techniques such as, computational fluid dynamics, computer aided design software, x-ray computed tomography and 3-dimensional printing can be used to develop, optimize, and fabricate feed spacers for enhanced performance (Bucs et al, 2018). Yu et al (2022) proposes an interesting design for an arch feed spacer that has a hole in the node. This design exhibited relatively higher flow velocity distribution and fewer dead zones, resulting in less accumulation of foulants.…”

Section: Opportunitiesmentioning

confidence: 99%

A review of spiral wound membrane modules and processes for groundwater treatment

Tabi,

Boakye,

Agyemang

et al. 2024

Front. Membr. Sci. Technol.

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The demand for freshwater keeps increasing on a global scale, and on the other hand, the availability of freshwater keeps diminishing. Groundwater has been identified as the largest source of freshwater that is readily accessible. Although the water is available for abstraction, it must be treated to meet application standards. Membrane processes are the options that industry and researchers are turning to for the purification of groundwater. This review provides an insight into the use of pressure-driven membrane processes for groundwater treatment, with focus on the spiral wound membrane module. A brief description of what a spiral wound module is and the plant set-up in which it is used is given. The various applications of the spiral wound module with regards to groundwater treatment have been reviewed. The shortcomings and challenges limiting the application of spiral wound modules and by extension, the treatment plant itself have been highlighted. To cap it all, the opportunities that can be exploited to overcome these challenges and position pressure-driven membrane processes for groundwater treatment as the go-to purification method have been discussed.

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“…Figure 10 shows the difference between various properties along the feed inlet with and without feed spacers. Yu et al, 2022 developed different node designs for improvements in spacer designs, namely, Arch-hole (twoelliptical cylinders) and Arch (solid) nodes. Results showed that the Arch-hole design node minimized the energy cost by 69% and reduced fouling with higher flux-value calculated via Computational Fluid Dynamics (CFD) simulation.…”

Section: Spiral-wound Modulementioning

confidence: 99%

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

Tarun,

Dakshesh,

Arthanareeswaran

2024

Front. Membr. Sci. Technol.

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Wastewater, referred to as sewage, has been a byproduct of human settlement since ancient times. An increase in human activities leads to more wastewater effluents, resulting in higher concentrations of organic compounds, which are harmful to all forms of living organisms and drinking water purposes. Traditional methods cannot satisfy this issue for higher concentrations. The advanced membrane process is an alternative to this conventional method for removing organic compounds and various effluents due to its high permeate quality and less toxicity. Moreover, the modification of polymeric membranes by increasing its content led to a higher flux thereby enhancing the fouling property for effective wastewater treatment. The processes, UF, RO, NF, and FO, ion exchange, MD, and pervaporation, were developed for more robust methods to improve the quality of the environment and lead to higher salt rejection. This review provides an overview of the fabrications, methods and modifications of substrates utilized in different processes with varying modules to achieve a higher flux rate, lowering the fouling. We discuss the materials used for various membrane modules in ceramic membranes under different operating circumstances and the methods to enhance the performance of membrane fouling. This review also aims to track the ongoing research works to broaden different process combinations for further research purposes, showcasing better antifouling performance and maximizing water quality in the future.

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Arch-type feed spacer with wide passage node design for spiral-wound membrane filtration with reduced energy cost

Cited by 10 publications

References 52 publications

Integration of Porous and Permeable Poly(ether sulfone) Feed Spacer onto Membrane Surfaces via Direct 3D Printing

Integration of Porous and Permeable Poly(ether sulfone) Feed Spacer onto Membrane Surfaces via Direct 3D Printing

A review of spiral wound membrane modules and processes for groundwater treatment

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

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