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Mass transfer of water vapor in a hollow fiber for degassing processes
Author(s) -
Murata Hideyuki,
Tomita Yasushi,
Miyashita Makoto,
Sakai Kazunari,
Toda Masayuki,
Ohmi Tadahiro
Publication year - 1999
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690450403
Subject(s) - ultrapure water , mass transfer , water vapor , fiber , hollow fiber membrane , water flow , chemistry , chemical engineering , flow (mathematics) , materials science , process engineering , nanotechnology , mechanics , chromatography , environmental engineering , environmental science , engineering , organic chemistry , physics
The mass‐transfer mechanisms of water vapor in hollow‐fiber membrane modules used to remove gases from water were studied experimentally and theoretically. Hollow‐fiber modules for degassing are widely used in various industries, including ultrapure water production. Although these modules perform extremely well, a general principle for the design has not been established. Recently, very highly efficient asymmetric hollow‐fiber modules were developed, that could reduce the dissolved oxygen to less than 1 μg/L (1 ppb). From our studies of the modules, it was found that the mass transfer of water vapor plays an extremely important role in the flow in the lumen side of the hollow fibers. The establishment of a theoretical design method for degassing modules can be expected from our studies.