scholarly journals Development of a novel intravascular oxygenator catheter: Oxygen mass transfer properties across nonporous hollow fiber membranes

2020 ◽  
Vol 118 (1) ◽  
pp. 345-356
Author(s):  
Stewart Farling ◽  
Tobias L. Straube ◽  
Travis P. Vesel ◽  
Nick Bottenus ◽  
Bruce Klitzman ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Hollow Fiber ◽  
Oxygen Mass Transfer ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Transfer Properties

Analysis of mass transfer in hollow-fiber membranes

Desalination ◽  
2002 ◽  
Vol 145 (1-3) ◽  
pp. 147-152 ◽  
Author(s):  
Endre Nagy ◽  
Péter Hadik
Keyword(s):  
Mass Transfer ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

Modeling the mass transfer in solvent-extraction processes with hollow-fiber membranes

AIChE Journal ◽  
2005 ◽  
Vol 51 (4) ◽  
pp. 1067-1079 ◽  
Author(s):  
S. Bocquet ◽  
A. Torres ◽  
J. Sanchez ◽  
G. M. Rios ◽  
J. Romero
Keyword(s):  
Mass Transfer ◽  
Solvent Extraction ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Extraction Processes

scholarly journals Microstructured Hollow Fiber Membranes: Potential Fiber Shapes for Extracorporeal Membrane Oxygenators

Membranes ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 374
Author(s):  
Paul Ecker ◽  
Markus Pekovits ◽  
Tsvetan Yorov ◽  
Bahram Haddadi ◽  
Benjamin Lukitsch ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Gas Exchange ◽  
Surface Area ◽  
Hollow Fiber ◽  
Thrombus Formation ◽  
Membrane Surface ◽  
Low Flow ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Membrane Oxygenators

Extracorporeal membrane oxygenators are essential medical devices for the treatment of patients with respiratory failure. A promising approach to improve oxygenator performance is the use of microstructured hollow fiber membranes that increase the available gas exchange surface area. However, by altering the traditional circular fiber shape, the risk of low flow, stagnating zones that obstruct mass transfer and encourage thrombus formation, may increase. Finding an optimal fiber shape is therefore a significant task. In this study, experimentally validated computational fluid dynamics simulations were used to investigate transverse flow within fiber packings of circular and microstructured fiber geometries. A numerical model was applied to calculate the local Sherwood number on the membrane surface, allowing for qualitative comparison of gas exchange capacities in low-velocity areas caused by the microstructured geometries. These adverse flow structures lead to a tradeoff between increased surface area and mass transfer. Based on our simulations, we suggest an optimal fiber shape for further investigations that increases potential mass transfer by up to 48% in comparison to the traditional, circular hollow fiber shape.

Sign in / Sign up

Export Citation Format

Share Document