Antiscaling 3D printed feed spacers via facile nanoparticle coating for membrane distillation

Thomas, Navya; Kumar, Mahendra; Palmisano, Giovanni; Al‐Rub, Rashid K. Abu; Alnuaimi, Reham Y.; Alhseinat, Emad; Rowshan, Reza; Arafat, Hassan A.

doi:10.1016/j.watres.2020.116649

Cited by 29 publications

(11 citation statements)

References 51 publications

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“…The properties of the membrane depend on the use of appropriate methods and material modifications to obtain the appropriate structure and morphology for the separation process [39]. Various methods are used to produce membranes such as molding [84,85], solution casting [86,87], sintering [88,89], stretching [90], coating [91,92] and phase inversion [40,[93][94][95]. The solution casting techniques, phase inversion techniques, and electrospinning are the most frequently used techniques for membrane production.…”

Section: Membrane Fabrication Techniquesmentioning

confidence: 99%

Natural Fiber-Reinforced Thermoplastic ENR/PVC Composites as Potential Membrane Technology in Industrial Wastewater Treatment: A Review

et al. 2022

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Membrane separation processes are prevalent in industrial wastewater treatment because they are more effective than conventional methods at addressing global water issues. Consequently, the ideal membranes with high mechanical strength, thermal characteristics, flux, permeability, porosity, and solute removal capacity must be prepared to aid in the separation process for wastewater treatment. Rubber-based membranes have shown the potential for high mechanical properties in water separation processes to date. In addition, the excellent sustainable practice of natural fibers has attracted great attention from industrial players and researchers for the exploitation of polymer composite membranes to improve the balance between the environment and social and economic concerns. The incorporation of natural fiber in thermoplastic elastomer (TPE) as filler and pore former agent enhances the mechanical properties, and high separation efficiency characteristics of membrane composites are discussed. Furthermore, recent advancements in the fabrication technique of porous membranes affected the membrane’s structure, and the performance of wastewater treatment applications is reviewed.

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Section: Membrane Fabrication Techniquesmentioning

confidence: 99%

Natural Fiber-Reinforced Thermoplastic ENR/PVC Composites as Potential Membrane Technology in Industrial Wastewater Treatment: A Review

et al. 2022

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“…30 Apart from conventional spacers, 3D printed spacers have also offered simplification and optimization of the overall module design for improved process efficiency in different water treatment applications. [31][32][33][34][35] Thomas et al 36 demonstrated different types of antiscaling 3D-printed spacers by surface coating with nanomaterials for MD.…”

Section: Introductionmentioning

confidence: 99%

3D printed membrane‐integrated spacers for enhanced antifouling in ultrafiltration

Khalil

Francis

Hashaikeh

et al. 2022

J of Applied Polymer Sci

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Feed spacers are an important component of membrane‐based filtration systems as they promote turbulence and mass transfer during the filtration process—thereby, reducing the membrane fouling and improving the flux. Whereas spacers are used as a separate component in conjunction with membranes, herein, we demonstrate that membrane‐integrated spacers offer superior fouling resistance and hence an improved output flux during filtration. The integrated spacers were fabricated by 3D printing a composite slurry of UV curable resin and polyvinylidene fluoride on the Polyethersulfone‐based ultrafiltration (UF) membrane. After curing under the UV light, the 3D printed spacers showed excellent flexibility and mechanical integrity along with permanent adhesion to the UF membrane. When tested for filtration using humic acid as foulant, the integrated spacer offered significantly reduced fouling and an increased flux as compared with the commercial spacer. Moreover, it was found that the geometry of the integrated spacers plays an important role in their performance. Among different geometries, the “gyroid” geometry, with an optimal infill density, provided the highest fouling resistance while improving the flux by nearly 150% as compared with the commercial spacer. When tested as stand‐alone spacers, the 3D spacers with identical geometries resulted in an increased fouling and lower flux which confirmed the superior performance of membrane integrated spacers.

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“…In the past ten years, engineering anti‐scaling idea have been changed from “removal” to “not only removal but also prevention.” Functional coatings with low surface free energy (denoted as SFE) and self‐cleaning performance coated to engineering surface might solve the problem of scaling/crystallization in practical engineering applications. [ 20,21 ] A lot of experimental and theoretical researches focused on scaling of CaCO 3 have been reported, including crystal forms of CaCO 3 , [ 22–23 ] nucleation mechanism, [ 24,25 ] induction time, [ 26 ] and crystal growth process. [ 27,28 ] Furthermore, how temperature, [ 29 ] pH, [ 30 ] flow field, [ 31 ] and material surface/interface characteristics [ 32 ] interfere in the crystallization behavior of CaCO 3 were also studied extensively.…”

Section: Introductionmentioning

confidence: 99%

Grass‐to‐stone surface inspired long‐term inhibiting scaling

et al. 2022

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Bionic self-cleaning coatings have exhibited scaling inhibition for their low surface free energy. The key issue is focused on the long-term anti-scaling performance for the hydrophobicity failure after scaled. Inspired by "grass-tostone" phenomenon, we reported a polymer coating (WCA = 120 • , WSA = 14 • ) with the water contact angle of its 720 h-scaled surface increased to 135 • and scaling reduced by 90-95%. The nucleation and growth of CaCO 3 at "coatingcrystal" interface are investigated, and a physical model for self-healing film interface inhibiting scaling is innovatively proposed, as an important step toward designing long-term anti-scaling coating for engineering application.

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Antiscaling 3D printed feed spacers via facile nanoparticle coating for membrane distillation

Cited by 29 publications

References 51 publications

Natural Fiber-Reinforced Thermoplastic ENR/PVC Composites as Potential Membrane Technology in Industrial Wastewater Treatment: A Review

Natural Fiber-Reinforced Thermoplastic ENR/PVC Composites as Potential Membrane Technology in Industrial Wastewater Treatment: A Review

3D printed membrane‐integrated spacers for enhanced antifouling in ultrafiltration

Grass‐to‐stone surface inspired long‐term inhibiting scaling

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