scholarly journals Improving Performance of Electrospun Nylon 6,6 Nanofiber Membrane for Produced Water Filtration via Solvent Vapor Treatment

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2117 ◽  
Author(s):  
Nur Syakinah Abd Halim ◽  
Mohd Dzul Hakim Wirzal ◽  
Muhammad Roil Bilad ◽  
Nik Abdul Hadi Md Nordin ◽  
Zulfan Adi Putra ◽  
...  
Keyword(s):  
Produced Water ◽  
Separation Performance ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Solvent Vapor ◽  
Acid Vapor ◽  
Dispersed Oil ◽  
Nylon 6,6 ◽  
Highly Porous ◽  
Vapor Treatment

Electrospun nanofiber membrane (NFM) has a high potential to be applied as a filter for produced water treatment due to its highly porous structure and great permeability. However, it faces fouling issues and has low mechanical properties, which reduces the performance and lifespan of the membrane. NFM has a low integrity and the fine mat easily detaches from the sheet. In this study, nylon 6,6 was selected as the polymer since it offers great hydrophilicity. In order to increase mechanical strength and separation performance of NFM, solvent vapor treatment was implemented where the vapor induces the fusion of fibers. The fabricated nylon 6,6 NFMs were treated with different exposure times of formic acid vapor. Results show that solvent vapor treatment helps to induce the fusion of overlapping fibers. The optimum exposure time for solvent vapor is 5 h to offer full retention of dispersed oil (100% of oil rejection), has 62% higher in tensile strength (1950 MPa) compared to untreated nylon 6,6 NFM (738 MPa), and has the final permeability closest to the untreated nylon 6,6 NFM (733 L/m2.h.bar). It also took more time to get fouled (220 min) compared to untreated NFM (160 min).

scholarly journals Effect of Solvent Vapor Treatment on Electrospun Nylon 6,6 Nanofiber Membrane

2018 ◽  
Vol 429 ◽  
pp. 012019 ◽  
Author(s):  
N S A Halim ◽  
M D H Wirzal ◽  
M R Bilad ◽  
A R M Yusoff ◽  
N A H M Nordin ◽  
...  
Keyword(s):  
Nanofiber Membrane ◽  
Solvent Vapor ◽  
Effect Of Solvent ◽  
Nylon 6,6 ◽  
Vapor Treatment

Recent Development on Electrospun Nanofiber Membrane for Produced Water Treatment: A review

2020 ◽  
pp. 104613
Author(s):  
Nur Syakinah Abd Halim ◽  
Mohd Dzul Hakim Wirzal ◽  
Shafiq Mohd Hizam ◽  
Muhammad Roil Bilad ◽  
Nik Abdul Hadi Md Nordin ◽  
...  
Keyword(s):  
Water Treatment ◽  
Produced Water ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Produced Water Treatment

scholarly journals Improved Nylon 6,6 Nanofiber Membrane in A Tilted Panel Filtration System for Fouling Control in Microalgae Harvesting

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 252 ◽  
Author(s):  
Normi Izati Mat Nawi ◽  
Nur Syakinah Abd Halim ◽  
Leong Chew Lee ◽  
Mohd Dzul Hakim Wirzal ◽  
Muhammad Roil Bilad ◽  
...  
Keyword(s):  
Steady State ◽  
Mechanical Strength ◽  
Membrane Filtration ◽  
Aeration Rate ◽  
Nanofiber Membrane ◽  
Total Energy Consumption ◽  
Solvent Vapor ◽  
Relaxation Period ◽  
Microalgae Harvesting ◽  
Nylon 6,6

The competitiveness of algae as biofuel feedstock leads to the growth of membrane filtration as one of promising technologies for algae harvesting. Nanofiber membrane (NFM) was found to be efficient for microalgae harvesting via membrane filtration, but it is highly limited by its weak mechanical strength. The main objective of this study is to enhance the applicability of nylon 6,6 NFM for microalgae filtration by optimizing the operational parameters and applying solvent vapor treatment to improve its mechanical strength. The relaxation period and filtration cycle could be optimized to improve the hydraulic performance. For a cycle of 5 min., relaxation period of ≤2 min shows the highest steady-state permeability of 365 ± 14.14 L m−2 h−1 bar−1, while for 10 min cycle, 3 min. of relaxation period was found optimum that yields permeability of 402 ± 34.47 L m−2 h−1 bar−1. The treated nylon 6,6 NFM was also used to study the effect of aeration rate. It is confirmed that the aeration rate enhances the steady-state performance for both intermittent and continuous mode of aeration. Remarkably, intermittent aeration shows 7% better permeability than the full aeration for all tested condition, which is beneficial for reducing the total energy consumption.

scholarly journals CF4 plasma-modified omniphobic electrospun nanofiber membrane for produced water brine treatment by membrane distillation

2017 ◽  
Vol 529 ◽  
pp. 234-242 ◽  
Author(s):  
Yun Chul Woo ◽  
Ying Chen ◽  
Leonard D. Tijing ◽  
Sherub Phuntsho ◽  
Tao He ◽  
...  
Keyword(s):  
Produced Water ◽  
Membrane Distillation ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Brine Treatment

scholarly journals Electrospun Nylon 6,6/ZIF-8 Nanofiber Membrane for Produced Water Filtration

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2111 ◽  
Author(s):  
Nur Syakinah Abd Halim ◽  
Mohd Dzul Hakim Wirzal ◽  
Muhammad Roil Bilad ◽  
Nik Abdul Hadi Md Nordin ◽  
Zulfan Adi Putra ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Steady State ◽  
Water Reuse ◽  
Produced Water ◽  
Pure Water ◽  
Volume Ratio ◽  
High Porosity ◽  
Nanofiber Membrane ◽  
Zeolitic Imidazolate Framework ◽  
Nylon 6,6

This study develops electrospun nylon 6,6 nanofiber membrane (NFM), incorporating zeolitic imidazolate framework-8 (ZIF-8) as the additive for produced water (PW) filtration. Electrospun NFM is suitable to be used as a filter, especially for water treatment, since it has a huge surface area to volume ratio, high porosity, and great permeability compared to the conventional membranes. These properties also enhance its competitiveness to be used as reverse osmosis pre-treatment, as the final stage of PW treatment water reuse purpose. However, the fouling issue and low mechanical strength of NFM reduces hydraulic performance over time. Therefore, this study employs ZIF-8 as an additive to improve nylon 6,6 NFM properties to reduce fouling and increase membrane tensile strength. Results show that the optimum loading of ZIF-8 was at 0.2%. This loading gives the highest oil rejection (89%), highest steady-state pure water permeability (1967 L/(m2·h·bar)), 2× higher than untreated nylon 6,6 NFM with tensile strength 5× greater (3743 MPa), and a steady-state permeability of 1667 L/(m2·h·bar) for filtration of real produced water.

Plasma-etched electrospun nanofiber membrane as adsorbent for dye removal

2018 ◽  
Vol 132 ◽  
pp. 445-451 ◽  
Author(s):  
Lu Bai ◽  
Lu Jia ◽  
Zhaodong Yan ◽  
Zhicheng Liu ◽  
Yaqing Liu
Keyword(s):  
Dye Removal ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane

Chitosan-functionalized sodium alginate-based electrospun nanofiber membrane for As (III) removal from aqueous solution

2021 ◽  
pp. 106693
Author(s):  
Md Eman Talukder ◽  
Md. Nahid Pervez ◽  
Wang Jianming ◽  
Ziwei Gao ◽  
George K Stylios ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sodium Alginate ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane

Treatment of Oily Wastewaters by Highly Porous Whisker-constructed Ceramic Membranes: Separation Performance and Fouling Models

2022 ◽  
pp. 118042
Author(s):  
Hui Wu ◽  
Chunyi Sun ◽  
Yuzhu Huang ◽  
Xiangyong Zheng ◽  
Min Zhao ◽  
...  
Keyword(s):  
Ceramic Membranes ◽  
Separation Performance ◽  
Highly Porous
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