scholarly journals Study on the effect of air gap on physico-chemical and performance of PVDF hollow fibre membrane

2021 ◽  
Vol 1142 (1) ◽  
pp. 012014
Author(s):  
H S Zakria ◽  
M H D Othman ◽  
R Kamaludin ◽  
A Jilani
Keyword(s):  
Hollow Fibre ◽  
Air Gap ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Physico Chemical ◽  
And Performance

THE FEASIBILITY OF KAOLIN AS MAIN MATERIAL FOR LOW COST POROUS CERAMIC HOLLOW FIBRE MEMBRANE PREPARED USING COMBINED PHASE INVERSION AND SINTERING TECHNIQUE

2017 ◽  
Vol 79 (1-2) ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
Mohd Hafiz Dzarfan Othman ◽  
A. F. Ismail ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar
Keyword(s):  
Phase Inversion ◽  
Low Cost ◽  
Pure Water ◽  
Porous Ceramic ◽  
Water Flux ◽  
Hollow Fibre ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Pure Water Flux ◽  
And Performance

Ceramic hollow fibre membrane (CHFM) demonstrated superior characteristics and performance in any separation application. The only problem associated with this kind of technology is the high cost. In order to effectively fabricate and produce low cost porous CHFM, a series of CHFMs made of kaolin were fabricated via combined phase inversion and sintering technique. The CHFMs from kaolin named as kaolin hollow fibre membranes (KHFMs) were studied at different kaolin contents of 35 wt.%, 37.5 wt.% and 40 wt.% sintered at 1200ºC. The result indicated that by varying kaolin contents, different morphologies were obtained due to changes in the viscosity of ceramic suspension containing kaolin. The optimum kaolin content for KHFM was identified. It was found that KHFM prepared at 37.5 wt% has a mechanical strength and pure water flux of A and B respectively.  

Application of hollow fibre membrane reactor for biological removal of H2S

2020 ◽  
Author(s):  
Jewel Das ◽  
Harish Ravishankar ◽  
Piet Lens
Keyword(s):  
Mass Transfer ◽  
Membrane Surface ◽  
Hollow Fibre ◽  
Microbial Community Analysis ◽  
Rayon Production ◽  
Membrane Area ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Physico Chemical ◽  
Biological Methods

<p>Hydrogen sulfide (H<sub>2</sub>S) is a toxic pollutant and harmful to human health. Industries such as pulp and paper manufacturing, rayon production, natural gas extraction and refining, and crude petroleum refineries generate waste gas streams with high H<sub>2</sub>S concentrations. Both physico-chemical and biological methods are used for H<sub>2</sub>S removal from the gas stream. Biological methods offer several advantages such as environmental friendly, less expensive and require simple operation and maintenance compared to physico-chemical methods. In this study, a hydrophilic hollow fibre membrane (HFM) based bioreactor configuration has been tested for biological H<sub>2</sub>S removal. Three reactors were fabricated and operated for ~ 3 months where two reactors were used for biological conversion process and the third reactor was used for abiotic process. The effective membrane area of a HFM module used in each reactor was 0.0138 m<sup>2</sup>. The bioreactors demonstrated efficient gas-liquid mass transfer through the HFM module and achieved ~ 99% removal efficiency with an elimination capacity of ~ 17.0 g m<sup>-3</sup> h<sup>-1</sup>. The H<sub>2</sub>S flux of the bioreactor was ~ 0.20 g m<sup>-2</sup> day<sup>-1</sup> which was ~ 9 times higher than the abiotic reactor for an inlet H<sub>2</sub>S concentration of ~ 0.90 g m<sup>-3</sup>. The overall mass transfer coefficient value for the biotic process was 17.2 µm s<sup>-1</sup> which was ~ 25 times higher than the abiotic process. The bioreactors demonstrated both microbial attached growth on the membrane surface and suspended growth in the liquid phase. Microbial community analysis confirmed the presence of diverse sulfur-oxidizing bacteria at genus level including <em>Acinetobacter</em>, <em>Dechloromonas</em>, <em>Hydrogenophaga</em>, <em>Rhodopseudomonas</em> and <em>Sulfurospirillum</em>. Moreover, the enrichment of other bacterial genera such as ammonia-oxidizing (e.g. <em>Nitrosospira</em>), organic matter degrading (e.g. <em>Trichococcus</em>) and methanogenic (e.g. <em>Methanosaeta</em>) microorganisms demonstrate the diverse microbial ecology of the sludge growing in the bioreactor.</p>

Synthesis and characterization of superoleophobic fumed alumina nanocomposite coated via the sol-gel process onto ceramic-based hollow fibre membrane for oil-water separation

2021 ◽  
Author(s):  
Yusuf Olabode Raji ◽  
Mohd Hafiz Dzarfan Othman ◽  
Nik Abdul Hadi Sapiaa Md Nordin ◽  
Mohd Ridhwan Adam ◽  
Khairul Anwar Mohd Said ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hollow Fibre ◽  
Synthesis And Characterization ◽  
Water Separation ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Sol Gel Process ◽  
Oil Water Separation ◽  
Oil Water

scholarly journals Fabrication and characterization of composite hollow fibre membrane derived from hydroxyapatite cow bone and kaolin

2021 ◽  
Vol 1142 (1) ◽  
pp. 012011
Author(s):  
Suraya Najieha Kamarudin ◽  
Mohd Riduan Jamalludin ◽  
Siti Nor Suhaida Rasman ◽  
Siti Khadijah Hubadillah ◽  
Mohd Arif Budiman Pauzan ◽  
...  
Keyword(s):  
Hollow Fibre ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Fabrication And Characterization ◽  
Cow Bone

Blood compatibility of two different types of membrane oxygenator during cardiopulmonary bypass in infants

1994 ◽  
Vol 17 (10) ◽  
pp. 543-548 ◽  
Author(s):  
Y.J. Gu ◽  
P.W. Boonstra ◽  
C. Akkerman ◽  
H. Mungroop ◽  
I. Tigchelaar ◽  
...  
Keyword(s):  
Cardiopulmonary Bypass ◽  
Blood Compatibility ◽  
Hollow Fibre ◽  
Membrane Oxygenator ◽  
Hollow Fibre Membrane ◽  
Flat Sheet ◽  
Fibre Membrane ◽  
Membrane Oxygenators ◽  
Flat Sheet Membrane ◽  
Sheet Membrane

The contact of blood with the artificial extracorporeal circuit causes a systemic inflammatory response due to blood activation. In this study, we compared two different paediatric membrane oxygenators used for extracorporeal circulation: a hollow fibre membrane oxygenator (Dideco Masterflo D-701, n=10), and a flat sheet silicone membrane oxygenator (Avecor Kolobow 800-2A, n=10). Blood compatibility was indicated by measuring complement activation as well as leukocyte and platelet activation. In patients perfused with a flat sheet membrane oxygenator, concentrations of complement split products C3a were significantly increased 30 minutes after the start of bypass (p<0.01), whereas only a mild increase of C3a was found in patients perfused with a hollow fibre membrane oxygenator. Leukocyte and platelet counts dropped uniformly in both groups after the start of bypass mainly due to hemodilution. Activation of leukocytes and platelets identified by both plasma β-glucuronidase and β-thromboglobulin was similar in both groups. Infants perfused with a flat sheet membrane oxygenator received significantly more donor blood than those perfused with a hollow fibre oxygenator (p<0.05). These results indicate that when used during paediatric cardiopulmonary bypass, a flat sheet membrane oxygenator has a higher complement activity than a hollow fibre membrane oxygenator, which is probably due to the relatively larger blood-surface contacting area of the oxygenator.

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