Crosslinked layer-by-layer polyelectrolyte nanofiltration hollow fiber membrane for low-pressure water softening with the presence of SO 4 2− in feed water

2015 ◽  
Vol 486 ◽  
pp. 169-176 ◽  
Author(s):  
Chang Liu ◽  
Lei Shi ◽  
Rong Wang
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Low Pressure ◽  
Feed Water ◽  
Layer By Layer ◽  
Fiber Membrane ◽  
Water Softening ◽  
Pressure Water

Fouling indices for low pressure hollow fiber membrane performance assessment

2011 ◽  
Vol 45 (8) ◽  
pp. 2627-2637 ◽  
Author(s):  
Anh H. Nguyen ◽  
John E. Tobiason ◽  
Kerry J. Howe
Keyword(s):  
Performance Assessment ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Low Pressure ◽  
Fiber Membrane ◽  
Membrane Performance

Surface Modification of Polyethersulfone Hollow Fiber Membrane for Water Recovery Using Layer-by-Layer Nanocoating Method

Polymer Korea ◽  
2015 ◽  
Vol 39 (5) ◽  
pp. 761
Author(s):  
So Jung Park ◽  
Sang Hee Yun ◽  
Won Kil Choi ◽  
Seong-Keun Cho ◽  
Hyung Keun Lee ◽  
...  
Keyword(s):  
Surface Modification ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Layer By Layer ◽  
Water Recovery ◽  
Fiber Membrane

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.

Pilot plant evaluation of an ozone-microfiltration system for drinking water treatment

2000 ◽  
Vol 41 (10-11) ◽  
pp. 17-23 ◽  
Author(s):  
M. Hashino ◽  
Y. Mori ◽  
Y. Fujii ◽  
N. Motoyama ◽  
N. Kadokawa ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Drinking Water Treatment ◽  
Feed Water ◽  
Permeate Flux ◽  
Fiber Membrane ◽  
Filtration System ◽  
Plant Evaluation

We have developed a novel ozone resistant microfiltration (MF) module using an organic hollow fiber membrane made of polyvinylidenefluoride (PVDF). A new filtration system using this MF module together with ozone dose provided three to four times higher permeate flux compared with the filtration without ozone. The reaction of ozone with organic materials in feed water was necessary to occur on the surface of the membrane to have higher permeate flux.

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