Antifouling performance of spiral wound type module made of carbon nanotubes/polyamide composite RO membrane for seawater desalination

Fajardo‐Díaz, Juan L.; Morelos-Gómez, Aarón; Cruz-Silva, Rodolfo; Matsumoto, Akito; Ueno, Yutaka; Takeuchi, Norihiro; Kitamura, Kotaro; Miyakawa, Hiroki; Tejima, Syogo; Takeuchi, Kenji; Tsuzuki, Koichi; Endo, Morinobu

doi:10.1016/j.desal.2021.115445

Cited by 27 publications

(16 citation statements)

References 53 publications

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“…Besides enhancing the membrane permeability, some fillers such as CNTs, MOFs and MXenes have also demonstrated success in decreasing fouling propensity, and enhancing boron This journal is © The Royal Society of Chemistry 2022 selectivity and chlorine resistance, all of which are crucial traits needed for RO membranes. 10,229,232,233 For some synthetic nanochannels like MXenes or CNTs, nanomaterials can be created as an interlayer between the support and polyamide layer (Fig. 16a and b).…”

Section: Supported Block Copolymer Membranesmentioning

confidence: 99%

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The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

2022

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Section: Supported Block Copolymer Membranesmentioning

confidence: 99%

Section: Membrane Nanoarchitectonics Incorporating Water Nanochannelsmentioning

confidence: 99%

The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

2022

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“…Meanwhile, the representative bands of used AEM such as C-H bending vibration at 1376 cm −1 respond at a lower wavenumber. A lower wavenumber denotes the increase in the bond length, and this might be attributed to the electrostatic and affinity interaction between HA and AEM [18,49,50].…”

Section: Influence Of Ha With Calcium Ions On Membrane Foulingmentioning

confidence: 99%

Influential Mechanism of Natural Organic Matters with Calcium Ion on the Anion Exchange Membrane Fouling Behavior via xDLVO Theory

Zhang

Liu

et al. 2021

Membranes

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The fouling mechanism of the anion exchange membrane (AEM) induced by natural organic matter (NOM) in the absence and presence of calcium ions was systematically investigated via the extended Derjaguin–Landau–Verwey–Overbeek (xDLVO) approach. Sodium alginate (SA), humic acid (HA), and bovine serum albumin (BSA) were utilized as model NOM fractions. The results indicated that the presence of calcium ions tremendously aggravated the NOM fouling on the anion exchange membrane because of Ca-NOM complex formation. Furthermore, analysis of the interaction energy between the membrane surface and foulants via xDLVO revealed that short-range acid–base (AB) interaction energy played a significant role in the compositions of interaction energy during the electrodialysis (ED) process. The influence of NOM fractions in the presence of calcium ions on membrane fouling followed the order: SA > BSA > HA. This study demonstrated that the interaction energy was a dominating indicator for evaluating the tendency of anion exchange membranes fouling by natural organic matter.

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“…The results showed that the anti-biofouling and hydraulic performance were more responsive to the diameter variation and spacer thickness. Diaz et al 26 set up a nanocomposite-based RO module and evaluated their fouling resistance in seawater desalination conditions. It was found that the RO modules were ideal for desalination plants as the required operational maintenance was less as compared to the commercial membranes.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of permeate flux in reverse osmosis by varying strand geometry

Shoukat

Idrees

Sajid

et al. 2022

Sci Rep

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In regions with limited potable water availability, membrane desalination is being employed to filter water using a pressure-driven approach. Because of the high energy consumption required to produce the pressure differential needed for this method, researchers have been trying different geometric designs of spacer filaments to enhance the amount of permeate flux in terms of energy utilization. The purpose of spacer filaments is to support membranes structurally and induce turbulent mixing in spiral wound membrane desalination. In this paper, the improvement of mass transfer in desalination driven by reverse osmosis has been studied using Computational Fluid Dynamics (CFD) with the introduction of spiral wound membranes that are lined with spacer filaments in a zig-zag formation having alternating diameters for strands. The fluid flow characteristics for a 2-dimensional geometric model were resolved using the open-source program OpenFOAM by changing the Reynolds number to just before the inception of instabilities. Ratios of alternate strand diameters were also varied between one and two. Based on a detailed analysis of velocity contours, pressure distribution, wall shear stresses, and steady-state vortex systems, the research findings offer guidance for employing alternating strand design in zig-zag formation for optimum mass transfer and minimal pressure drop when accounting for concentration polarization.

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Antifouling performance of spiral wound type module made of carbon nanotubes/polyamide composite RO membrane for seawater desalination

Cited by 27 publications

References 53 publications

The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

Influential Mechanism of Natural Organic Matters with Calcium Ion on the Anion Exchange Membrane Fouling Behavior via xDLVO Theory

Numerical analysis of permeate flux in reverse osmosis by varying strand geometry

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