Development of High Packing–density MBR Module Using Small Diameter PVDF Hollow Fiber Membrane

MEMBRANE ◽  
2020 ◽  
Vol 45 (5) ◽  
pp. 255-258
Author(s):  
Yasuhiro Ninomiya
Keyword(s):  
Hollow Fiber ◽  
Packing Density ◽  
Hollow Fiber Membrane ◽  
Small Diameter ◽  
Fiber Membrane ◽  
High Packing Density

Numerical Study of Boiler Feed Water Deoxygenation Using Hollow Fiber Membrane Contactor

2013 ◽  
Vol 561 ◽  
pp. 206-211
Author(s):  
Xiao Guang Zhang ◽  
Shi Gang Wang
Keyword(s):  
Dissolved Oxygen ◽  
Sherwood Number ◽  
Hollow Fiber ◽  
Packing Density ◽  
Hollow Fiber Membrane ◽  
Power Industry ◽  
Feed Water ◽  
Membrane Contactor ◽  
Fiber Membrane ◽  
Fiber Packing Density

Removal of dissolved oxygen from feed water is a necessary process in power industry. The hollow fiber membrane contactor is more efficient and pollution-free compared with some traditional methods. In this paper, hollow fiber is modeled by random distribution, and Gaussian function N(R, sigma) was used to model the polydisperse out radii of hollow fiber. This paper discussed the influence of different sigma on mass transfer coefficient with fiber packing density ranging from 0.1 to 0.4. It was found that, the effect of different sigma on the logarithmic mean Sherwood number decreased with increasing fiber packing density. When the packing density increased to 0.4, the removal of dissolved oxygen could meet the requirement of power industry, no matter how much value the sigma was. With the sigma increasing, the deviation of max and min Sherwood number from the average value increased gradually, except when the sigma was 0.05. This paper deduces there is a best value of sigma for membrane contactor when the fiber distribution is randomly distributed.

scholarly journals Mass Transfer and Fluid Hydrodynamics in Sealed End Hydrophobic Hollow Fiber Membrane Gas-liquid Contactors

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
S. Kartohardjono ◽  
V. Chen
Keyword(s):  
Mass Transfer ◽  
Hollow Fiber ◽  
Packing Density ◽  
Hollow Fiber Membrane ◽  
Gas Absorption ◽  
Outer Diameter ◽  
Fiber Membrane ◽  
Membrane Area ◽  
Wide Range ◽  
Membrane Contactors

Hollow fiber membrane modules have been extensively used as gas-liquid contactor devices to provide a high surface area within a small volume. Hollow fiber membrane contactors have been demonstrated in a wide range of application such as in gas stripping and gas absorption. In this study the performance of sealed end hydrophobic microporous hollow fiber membranes contactors were evaluated to remove dissolved oxygen from water via vacuum degassing process. Hollow fibers membranes used in the experiment were hydrophobic microporous polypropylene of 650 μm in outer diameter, 130 μm wall thickness and nominal pore size of 0.2 μm. Based on the experimentalresult the sealed end membrane contactor can remove oxygen from water as high as 3.4-gram oxygen per square meter of membrane area per hour. The oxygen flux decreases with increasing module-packing density for the same water velocity. The same effect also occurred for the mass transfer coefficient of the membrane contactors. The mass transfer coefficients were independent of fiber length within the range of study. Hydrodynamics analysis of the contactors showed that at the same Reynolds number pressure drops increase with increasing packing density due to an increase in friction between fibers and water.

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

2012 ◽  
Vol 27 (9) ◽  
pp. 951-955
Author(s):  
Chun-Li YANG ◽  
Qi-Ming XU ◽  
Ming GONG ◽  
Wei LIU
Keyword(s):  
Hollow Fiber ◽  
Oxygen Permeability ◽  
Hollow Fiber Membrane ◽  
Dual Phase ◽  
Fiber Membrane
Sign in / Sign up

Export Citation Format

Share Document