Morphology and transport property control of modified poly(ether ether ketone) (PEEKWC) hollow fiber membranes prepared from PEEKWC/PVP blends: influence of the relative humidity in the air gap

2005 ◽  
Vol 255 (1-2) ◽  
pp. 13-22 ◽  
Author(s):  
F TASSELLI ◽  
J JANSEN ◽  
F SIDARI ◽  
E DRIOLI
Keyword(s):  
Relative Humidity ◽  
Transport Property ◽  
Hollow Fiber ◽  
Air Gap ◽  
Hollow Fiber Membranes ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Fiber Membranes ◽  
Ether Ketone ◽  
Property Control

A MORPHOLOGICAL STUDY OF NICKEL OXIDE HOLLOW FIBER MEMBRANES: EFFECT OF AIR GAP & SINTERING TEMPERATURE

2016 ◽  
Vol 78 (12) ◽  
Author(s):  
Mohd Izzat Iqbal Mohd Zahar ◽  
Mohd Hafiz Dzarfan Othman ◽  
Mukhlis A Rahman ◽  
Juhana Jaafar ◽  
Siti Khadijah Hubadillah
Keyword(s):  
Mechanical Strength ◽  
Nickel Oxide ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Air Gap ◽  
Hollow Fibers ◽  
Asymmetric Structure ◽  
Hollow Fiber Membranes ◽  
Fiber Membrane ◽  
Fiber Membranes

A systematic study of the air gap effects on morphology and mechanical strength of Nickel Oxide (NiO) hollow fiber membranes has been carried out. The hollow fibers were prepared using the dry-jet wet spinning process using a dope solution containing NiO/N-methyl-2-pyrrolidone (NMP)/Arlacel/Poly(ethylene sulphide) with a weight ratio of 70/22.9/0.1/7. Tap water was used as internal and external coagulants. The cross-sectional structure of precursors hollow fiber membrane was studied by scanning electron microscopy (SEM). The results showed that both inner and outer finger-like voids of the hollow membrane were determined by the air gap distance. Experimental results indicated that an increase in air gap distance, from 100 mm to 200 mm, gave a hollow fiber with a lower mechanical strength and higher percentages of cross section surface area covered by finger-like voids structures. This study also revealed that the air gap introduced an elongation stress because of gravity on the internal or external surfaces of the NiO hollow fibers. A more effective hollow fiber membrane which is in asymmetric structure instead of symmetric structure can be produced by using air gap higher than 200 mm. 

Comprehensive insights into performance of water gap and air gap membrane distillation modules using hollow fiber membranes

Desalination ◽  
2022 ◽  
Vol 525 ◽  
pp. 115497
Author(s):  
Baek-Gyu Im ◽  
Lijo Francis ◽  
Ravichandran Santosh ◽  
Woo-Seung Kim ◽  
Noreddine Ghaffour ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Membrane Distillation ◽  
Air Gap ◽  
Hollow Fiber Membranes ◽  
Air Gap Membrane Distillation ◽  
Fiber Membranes

Preparation and properties of iPP hollow fiber membranes for air gap membrane distillation

2016 ◽  
Vol 57 (50) ◽  
pp. 23546-23555 ◽  
Author(s):  
Juan Wang ◽  
Qingfeng He ◽  
Yajing Zhao ◽  
Pingli Li ◽  
Heying Chang
Keyword(s):  
Hollow Fiber ◽  
Membrane Distillation ◽  
Air Gap ◽  
Hollow Fiber Membranes ◽  
Air Gap Membrane Distillation ◽  
Fiber Membranes

Arsenic removal using a sulfonated poly(ether ether ketone) coated hollow fiber nanofiltration membrane

2015 ◽  
Vol 1 (6) ◽  
pp. 839-845 ◽  
Author(s):  
Jianfeng Song ◽  
Mengxi Zhang ◽  
Alberto Figoli ◽  
Yong Yin ◽  
Baolong Zhao ◽  
...  
Keyword(s):  
Active Layer ◽  
Hollow Fiber ◽  
Arsenic Removal ◽  
Nanofiltration Membrane ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Ether Ketone ◽  
Sulfonated Poly

A new composite hollow fiber nanofiltration (NF) membrane with a thin sulfonated poly(ether ether ketone) (SPEEK) active layer was prepared and used for arsenic removal.

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