Comparative DCMD performance of hydrophobic-hydrophilic dual-layer hollow fibre PVDF membranes incorporated with different concentrations of carbon-based nanoparticles

Ravi, Jeganes; Othman, Mohd Hafiz Dzarfan; Tai, Zhong Sheng; El-badawy, Tijjani; Matsuura, Takeshi; Kurniawan, Tonni Agustiono

doi:10.1016/j.seppur.2021.118948

Cited by 21 publications

(8 citation statements)

References 42 publications

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“…All nanocomposite HF membranes were able to retain above 99.9% of the salt in feed during DCMD tests performed. These 43 high rejection data verified that only water vapor was allowed to be passed through the microporous and hydrophobic membranes. 34 To verify the result, the 3.5 wt.% NaCl solution feed has a conductivity equal to 43 mS produced permeate solution with less than 40 μS.…”

Section: Dcmd Desalination Performance Test Of Nfs/pvdf Hf Membranessupporting

confidence: 55%

Potential effects of nano‐fumed silica particles (NFS)/PVDF mixed matrix hollow fiber membrane on the performance of direct contact membrane distillation

Alsebaeai

Ahmad

Ooi

2022

Asia-Pacific J Chem Eng

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Hydrophobic nano‐fumed silica (NFS) was incorporated in polyvinylidene fluoride (PVDF) hollow fiber (HF) membrane for improving direct contact membrane distillation (DCMD) performance. The NFS/PVDF mixed matrix hollow fiber membrane was fabricated by the phase inversion process. The potential effects of increasing the percentage of NFS additive (0–6 wt.%) in the dope solution on the hollow fiber membrane characteristics such as viscosity, membrane morphology, porosity, hydrophobicity, Fourier transformed infrared spectroscopy, and permeability were investigated. The performance outcomes showed that the dope solution incorporated with 1.5 wt.% NFS exhibited the most promising HF membrane for membrane distillation (MD). The optimal HF membrane demonstrated the highest flux through shorter and narrower finger‐like structure formation and targeted high porosity. The addition of NFS particle content in the dope solutions enhanced the hydrophobicity of the fabricated membranes while slightly decreasing the porosity due to increasing the viscosity of the dope solution. With a steady flux of 9.25 kg/m2 h compared with the neat membrane at 70°C/20°C of feed/permeate temperatures, 8 h operation, and above 99.9% salt rejection, this PVDF/NFS mixed matrix hollow fiber membrane could be of excellent potential and sustainability in desalination process through DCMD.

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Section: Dcmd Desalination Performance Test Of Nfs/pvdf Hf Membranessupporting

confidence: 55%

Potential effects of nano‐fumed silica particles (NFS)/PVDF mixed matrix hollow fiber membrane on the performance of direct contact membrane distillation

Alsebaeai

Ahmad

Ooi

2022

Asia-Pacific J Chem Eng

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“…Ravi et al [152] modified hollow-fiber PVDF membranes with hydrophobized MWCNT and graphene nanoplate (GNP). PEG was initiated in the inner layer to increase hydrophobicity and the generation of finger-like pores resulting in high flux.…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

Nanomaterial‐Incorporated Membrane Distillation Membranes: Characteristics, Fabrication Techniques, and Applications

2023

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Membrane distillation (MD), a temperature‐driven membrane separation process, is used for various applications due to its less complicated design. MD operations encounter major issues such as permeate flux decrease, membrane fouling, and wetting. A lot of research has been conducted in the past years on the modification of MD membranes by incorporating nanomaterials to overcome these obstacles and considerably increase their performance. Nanomaterials incorporated into the membranes improve the water permeability, mechanical strength, and fouling. The incorporation of next‐generation nanomaterials like metal oxide nanoparticles, carbon‐based nanomaterials, graphene‐based membranes, quantum dots, and metal‐organic frameworks in the MD membranes is investigated. Essential membrane properties for MD operations are comprehensively studied, including higher liquid entry pressure, permeability, porosity, hydrophobicity, thermal stability, mean pore size, and low fouling rate. Significant advances in the application of nanomaterials to the modification of MD membranes as well as other membrane fabrication techniques adopted for the incorporation of nanoparticles like surface grafting, interfacial polymerization, plasma polymerization, and dip coating are reviewed. Important future aspects are discussed.

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“…However, among the above configurations, PVDF has been identified to exhibit superior properties that include high mechanical rigidity, thermal stability, chemical resistance, and high hydrophobicity, which collectively play a major role in the performance improvement of the DCMD system [18]. Thus, several researchers have experimented with both the PVDF standalone membrane [19] and PVDF blended with other specific materials such as halloysite (HNT) [20], hexafluoropropylene (HFP) [21], and multiceramics [22]. The investigations with the incorporation of the above hybrid membranes were carried out with either conventional or nonconventional sources of energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Teflon-Coated PVDF Membrane on the Performance of a Solar-Powered Direct Contact Membrane Distillation System

Kumaresan

Abraham

et al. 2022

Sustainability

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The present study dealt with the generation of freshwater through the direct contact membrane distillation (DCMD) technique, powered by an evacuated tube solar collector (ETSC). The major objective of the present work was to determine the optimum conditions of fluid flow rate and temperature for maximum freshwater productivity across both the feed and permeate sides of the membrane module. A flat hydrophobic membrane composed of polyvinylidene fluoride (PVDF) coated with Teflon was utilized for the DCMD process. The rate of freshwater production was examined with the variation in the feed/permeate flow rates (from 3 to 7 LPM) and feed temperature (from 45 °C to 75 °C) for a constant permeate-side temperature of 30 °C. The experimental results indicated that a maximum freshwater productivity of 45.18 kg/m2h was achievable from the proposed system during its operation with a high solar heated inlet feed temperature of 75 °C and mass flow rates of 7 LPM across both sides of the membrane. Further, a detailed assessment of the performance parameters indicated that the present solar-powered DCMD system exhibited a maximum evaporative efficiency of about 80% and temperature polarization coefficient (TPC) of 0.62 respectively.

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Comparative DCMD performance of hydrophobic-hydrophilic dual-layer hollow fibre PVDF membranes incorporated with different concentrations of carbon-based nanoparticles

Cited by 21 publications

References 42 publications

Potential effects of nano‐fumed silica particles (NFS)/PVDF mixed matrix hollow fiber membrane on the performance of direct contact membrane distillation

Potential effects of nano‐fumed silica particles (NFS)/PVDF mixed matrix hollow fiber membrane on the performance of direct contact membrane distillation

Nanomaterial‐Incorporated Membrane Distillation Membranes: Characteristics, Fabrication Techniques, and Applications

Effect of Teflon-Coated PVDF Membrane on the Performance of a Solar-Powered Direct Contact Membrane Distillation System

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