Effect of Air Gap Distance on PES/PVA Hollow Fibre Membrane's Morphology and Performance

Ahmad, Abdul Latif; Shafie, Zulfida Mohamad Hafis Mohd

doi:10.21315/jps2017.28.s1.12

Cited by 17 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the higher the air gap, the higher the stretching of fiber membrane is experienced thus producing thinner outer diameter of membrane. This result was also supported with the polyether sulfone/polyvinyl alcohol hollow fiber membrane produced by Ahmad et al [39] that produced smaller diameter hollow fibers on increasing air gap.…”

Section: Morphology Of Pvdf Hfmsupporting

confidence: 66%

Fabrication of High Performance PVDF Hollow Fiber Membrane Using Less Toxic Solvent at Different Additive Loading and Air Gap

et al. 2021

View full text Add to dashboard Cite

Existing toxic solvents in the manufacturing of polymeric membranes have been raising concerns due to the risks of exposure to health and the environment. Furthermore, the lower tensile strength of the membrane renders these membranes unable to endure greater pressure during water treatment. To sustain a healthier ecosystem, fabrication of polyvinylidene fluoride (PVDF) hollow fiber membrane using a less toxic solvent, triethyl phosphate (TEP), with a lower molecular weight polyethylene glycol (PEG 400) (0–3 wt.%) additive were experimentally demonstrated via a phase inversion-based spinning technique at various air gap (10, 20 and 30 cm). Membrane with 2 wt.% of PEG 400 exhibited the desired ultrafiltration asymmetric morphology, while 3 wt.% PEG 400 resulting microfiltration. The surface roughness, porosity, and water flux performance increased as the loading of PEG 400 increased. The mechanical properties and contact angle of the fabricated membrane were influenced by the air gap where 20 cm indicate 2.91 MPa and 84.72°, respectively, leading to a stronger tensile and hydrophilicity surface. Lower toxicity TEP as a solvent helped in increasing the tensile properties of the membrane as well as producing an eco-friendly membrane towards creating a sustainable environment. The comprehensive investigation in this study may present a novel composition for the robust structure of polymeric hollow fiber membrane that is suitable in membrane technology.

show abstract

Section: Morphology Of Pvdf Hfmsupporting

confidence: 66%

Fabrication of High Performance PVDF Hollow Fiber Membrane Using Less Toxic Solvent at Different Additive Loading and Air Gap

et al. 2021

View full text Add to dashboard Cite

show abstract

“…8 This can be done by integrating inorganic filler such as ion exchange resin and nanoparticles such as carbon nanotube, ZnO and TiO 2 into the polymeric membrane. 13,15,[18][19][20][21][22] In recent time, significant efforts have been devoted in fabrication of polymeric MMM by using hydroxyapatite (HAP) as great potential filler for separation of protein. [23][24][25][26][27] HAP (chemical formula Ca 10 (PO 4 ) 6 (OH) 2 ) is inorganic component of the hard tissues in bones.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetic Study of Bovine Serum Albumin (BSA) Adsorption onto Fabricated Polyethersulfone (PES)/Hydroxyapatite (HAP) Adsorptive Mixed Matrix Membrane (MMM)

Ahmad¹,

Shoparwe²,

Hanifa³

2019

JPS

Self Cite

View full text Add to dashboard Cite

In this study, different amount of hydroxyapatite (HAP) was embedded into polyethersulfone (PES) matrix to prepare adsorptive mixed matrix membranes (MMMs). All fabricated membranes were characterised based on functional groups, morphology, overall porosity, water content, hydrophilicity and pure water flux. The relationship of equilibrium and kinetics of bovine serum albumin (BSA) adsorption onto fabricated membrane in a batch system was performed. The BSA adsorption equilibrium data is best described by Freundlich isotherm model followed by Langmuir isotherm model. The kinetics of the adsorption is well presented by pseudo-second-order kinetic model and followed by pseudo-first-order kinetic model. Among all membranes, fabricated PES/ HAP adsorptive MMM (K4) produced with 60 wt% HAP shows the best characteristic of membrane with higher water content, porosity and hydrophilicity, demonstrating the higher average pure water flux, j w of 29.12 m 2 l -1 h -1 ± 0.6 m 2 l -1 h -1 , adsorption capacity, q e of 26.54 (g BSA.g membrane -1 ) and adsorption kinetic rate, k 2 of 0.814 (h -1 ). The reusability of K4 membrane shows the most effective regeneration compare than other membrane. The results suggested that the PES/HAP adsorptive MMM can be effectively applied for the adsorption of BSA from aqueous solution and can offer high potential merit for application in membrane adsorption process.

show abstract

The Influence of Air Gap Length on the Characteristics and Performance of Hybrid Polyethersulfone/Cellulose Nanocrystal/Multiwalled Carbon Nanotubes Hollow Fiber Membrane for Humic Acid Removal

C. Mahmud,

Saufi,

Abu Seman

et al. 2024

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Ready‐made or commercial hollow fiber (HF) membranes have limited performance for removing humic acid (HA) from water streams unless they undergo surface modification. Alternatively, a membrane can be tailor‐made specifically for HA removal by developing a new formulation and adjusting its fabrication parameters. In this study, to enhance the performance and antifouling properties of HF membranes, a hybrid membrane was developed by blending polyethersulfone (PES) with cellulose nanocrystals (CNC) and multiwalled carbon nanotubes (MWCNT). The effect of air gap length during the dry–wet spinning process was investigated, ranging from 3 cm to 12 cm, to regulate the properties of the hybrid membrane. The membranes were evaluated in terms of morphology (FESEM and AFM), porosity, and hydrophilicity (contact angle). Water flux, HA rejection, and flux recovery ratio (FRR) were also measured. The air gap length significantly influenced the fiber structure, with the finger‐like structure expanding from the outer surface to the center of the fiber as the air gap extended up to 9 cm. This increase in air gap length resulted in a significant reduction in porosity, decreasing from 75.59% to 43.45%, while simultaneously enhancing the contact angle from 78° to 89.60°. The membrane produced at a 9 cm air gap length exhibited the best performance, with a pure water flux of 15.83 LMH, HA rejection over 95%, and a high FRR of 98.78%. The synergistic effect of combining CNC with MWCNT and simply adjusting the air gap distance proves to be an effective approach for preparing custom‐made HF membranes for HA removal.

show abstract

Effect of Air Gap Distance on PES/PVA Hollow Fibre Membrane's Morphology and Performance

Cited by 17 publications

References 24 publications

Fabrication of High Performance PVDF Hollow Fiber Membrane Using Less Toxic Solvent at Different Additive Loading and Air Gap

Fabrication of High Performance PVDF Hollow Fiber Membrane Using Less Toxic Solvent at Different Additive Loading and Air Gap

Equilibrium and Kinetic Study of Bovine Serum Albumin (BSA) Adsorption onto Fabricated Polyethersulfone (PES)/Hydroxyapatite (HAP) Adsorptive Mixed Matrix Membrane (MMM)

The Influence of Air Gap Length on the Characteristics and Performance of Hybrid Polyethersulfone/Cellulose Nanocrystal/Multiwalled Carbon Nanotubes Hollow Fiber Membrane for Humic Acid Removal

Contact Info

Product

Resources

About