Determination of pore sizes and surface porosity and the effect of shear stress within a spinneret on asymmetric hollow fiber membranes

2001 ◽  
Vol 188 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Rong Wang ◽  
Tai-Shung Chung
Keyword(s):  
Shear Stress ◽  
Hollow Fiber ◽  
Surface Porosity ◽  
Hollow Fiber Membranes ◽  
Pore Sizes ◽  
Fiber Membranes

scholarly journals The Effect of Membrane Material and Surface Pore Size on the Fouling Properties of Submerged Membranes

2016 ◽  
Author(s):  
Sungil Jeon ◽  
Saeid Rajabzadeh ◽  
Ryo Okamura ◽  
Toru Ishigami ◽  
Susumu Hasegawa ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Pore Size ◽  
Hollow Fiber ◽  
Membrane Fouling ◽  
Polymeric Membrane ◽  
Transmembrane Pressure ◽  
Hollow Fiber Membranes ◽  
Membrane Material ◽  
Pore Sizes ◽  
Fiber Membranes

We aimed to investigate the relationship between membrane material and development of membrane fouling in a membrane bioreactor (MBR) using membranes with different pore sizes and hydrophilicities. Batch filtration tests were performed using submerged single hollow fiber membrane ultrafiltration (UF) modules with different polymeric membrane materials including cellulose acetate (CA), polyethersulfone (PES), and polyvinylidene fluoride (PVDF) with activated sludge taken from a municipal wastewater treatment plant. The three UF hollow fiber membranes were prepared by a non-solvent-induced phase separation method and had similar water permeabilities and pore sizes. The results revealed that transmembrane pressure (TMP) increased more sharply for the hydrophobic PVDF membrane than for the hydrophilic CA membrane in batch filtration tests, even when membranes with similar permeabilities and pore sizes were used. PVDF hollow fiber membranes with smaller pores had greater fouling propensity than those with larger pores. In contrast, CA hollow fiber membranes showed good mitigation of membrane fouling regardless of pore size. The results obtained in this study suggest that the surface hydrophilicity and pore size of UF membranes clearly affect the fouling properties in MBR operation when using activated sludge.

Determination of the surface potential for hollow-fiber membranes by the streaming-potential method

2017 ◽  
Vol 79 (5) ◽  
pp. 677-684 ◽  
Author(s):  
V. D. Sobolev ◽  
A. N. Filippov ◽  
T. A. Vorob’eva ◽  
I. P. Sergeeva
Keyword(s):  
Surface Potential ◽  
Hollow Fiber ◽  
Streaming Potential ◽  
Potential Method ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

Determination of Filtration Performances of Nanocomposite Hollow Fiber Membranes with Silver Nanoparticles

2015 ◽  
Vol 32 (8) ◽  
pp. 656-665 ◽  
Author(s):  
Turker Turken ◽  
Reyhan Sengur-Tasdemir ◽  
Derya Yuksel Koseoglu-Imer ◽  
Ismail Koyuncu
Keyword(s):  
Silver Nanoparticles ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes
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