Electrospun polystyrene nanofibrous membranes for direct contact membrane distillation

Ke, Huizhen; Feldman, Emma; Guzman, Plinio; Cole, Jesse J.; Wei, Qufu; Chu, Benjamin; Alkhudhiri, Abdullah; Al-Rasheed, Radwan; Hsiao, Benjamin S.

doi:10.1016/j.memsci.2016.05.052

Cited by 121 publications

(67 citation statements)

References 42 publications

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“…Electrospinning with and without multi-nozzle systems have been used to fabricate nanofiber membranes for the applications of MD [33,44]. Electrospun nanofibers have been obtained using many hydrophobic polymers such as PVDF and PcH [45][46][47]. Compared to other known membrane fabrication methods such as phase separation, electro-spun membranes have unique characteristics such as small fiber diameter, high specific surface area, and high porosity [48].…”

Section: Introductionmentioning

confidence: 99%

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

et al. 2020

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In this work, a novel triple-layer nanocomposite membrane prepared with polyethersulfone (PES)/carbon nanotubes (CNTs) as the primary bulk material and poly (vinylidene fluoride-co-hexafluoro propylene) (PcH)/CNTs as the outer and inner surfaces of the membrane by using electrospinning method is introduced. Modified PES with CNTs was chosen as the bulk material of the triple-layer membrane to obtain a high porosity membrane. Both the upper and lower surfaces of the triple-layer membrane were coated with PcH/CNTs using electrospinning to get a triple-layer membrane with high total porosity and noticeable surface hydrophobicity. Combining both characteristics, next to an acceptable bulk hydrophobicity, resulted in a compelling membrane for membrane distillation (MD) applications. The prepared membrane was utilized in a direct contact MD system, and its performance was evaluated in different salt solution concentrations, feed velocities and feed solution temperatures. The results of the prepared membrane in this study were compared to those reported in previously published papers. Based on the evaluated membrane performance, the triple-layer nanocomposite membrane can be considered as a potential alternative with reasonable cost, relative to other MD membranes.

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Section: Introductionmentioning

confidence: 99%

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

et al. 2020

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“…The fiber diameter and average fiber diameter (AFD) of electrospun PAN nanofibers and PAN/MWNTs‐COOH composite nanofibers with different amounts of MWNTs‐COOH were analyzed from the SEM images using the LeicaIMGRead software. The same method has been reported in my previous literature .…”

Section: Methodsmentioning

confidence: 78%

Use of MWNTs‐COOH to improve thermal energy storage and release rates of capric–palmitic–stearic acid ternary eutectic/polyacrylonitrile form‐stable phase change composite fibrous membranes

Wei

2018

Polymer Engineering & Sci

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A series of novel capric–palmitic–stearic acid ternary eutectic/polyacrylonitrile/carboxyl purified multi‐walled carbon nanotubes (CA–PA–SA/PAN/MWNTs‐COOH) form‐stable phase change composite fibrous membranes (PCCFMs) were fabricated by electrospinning and physical absorption methods. In these form‐stable PCCFMs, the CA–PA–SA ternary eutectic was served as phase change material for thermal energy storage, and the loaded MWNTs‐COOH was acted as thermal conductivity enhancement filler to improve heat transfer rates, as well as electrospun PAN/MWNTs‐COOH fibrous membranes with different weight fractions of MWNTs‐COOH (i.e., 5, 10, and 20 wt%) were used as supporting materials to provide structural strength and prevent liquid leakage of melted CA–PA–SA ternary eutectic. The morphological structure and thermal performances were investigated and analyzed. The images of scanning electron microscopy showed that the CA–PA–SA ternary eutectic was uniformly embedded and dispersed into the three‐dimensional porous network structure of electrospun PAN/MWNTs‐COOH fibrous membranes. Thermal performance tests suggested that the melting and freezing times of the CA–PA–SA/PAN/MWNTs‐COOH form‐stable PCCFMs with the addition of 10 wt% MWNTs‐COOH were significantly shorten by about 52% and 56% in comparison with those of the CA–PA–SA/PAN form‐stable PCCFMs. Their phase change temperatures and enthalpies were about 7°C–32°C and 130–138 kJ/kg, respectively. POLYM. ENG. SCI., 59:E403–E411, 2019. © 2018 Society of Plastics Engineers

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“…The next stage is to obtain the optimal conditions for the desalination of NaCl solution by DCMD process. The salt concentration was set to be 3.5%, which was in accordance with most investigations . The optimum conditions were determined based on “Effect of Process Variables on Flux and Rejection Rate” section and provided in Table .…”

Section: Resultsmentioning

confidence: 99%

Effective modeling and optimization of PVDF–PTFE electrospinning parameters and membrane distillation process by response surface methodology

Hassan

et al. 2018

J of Applied Polymer Sci

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Ploy(vinylidene fluoride)-polytetrafluoroethylene nanofibrous membrane fabrication and direct contact membrane distillation (DCMD) process were simulated and optimized by response surface methodology (RSM). Analysis of variance was applied to develop and verify the models that predict the objectives. The three-dimensional response surfaces of different objectives were obtained. Results showed that the membrane with thickness of 70.7 μm, contact angle of 146.2 , and liquid entry pressure of 53.5 kPa was obtained within investigated experimental range under the optimum electrospinning conditions. Rejection rate of 99.99% and the permeate flux of 67.5 kg m −2 h −1 were gained under the optimum membrane distillation (MD) process parameters. The actual and predicted values show good consistency verifying the accuracy of the models. In addition, an overall investigation of the influence of heat-press temperature on the morphological and mechanical properties of electrospun membrane was carried out. Results indicated that electrospinning process and MD performance can be enhanced after the corresponding variables were optimized by RSM. This study provides a scientific way to optimize the electrospinning and DCMD parameters.

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Electrospun polystyrene nanofibrous membranes for direct contact membrane distillation

Cited by 121 publications

References 42 publications

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

Use of MWNTs‐COOH to improve thermal energy storage and release rates of capric–palmitic–stearic acid ternary eutectic/polyacrylonitrile form‐stable phase change composite fibrous membranes

Effective modeling and optimization of PVDF–PTFE electrospinning parameters and membrane distillation process by response surface methodology

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