Filtration of liquid media under conditions of non-steady tangential flow
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United States of America Patent
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Aug 31, 1993
Grant Date -
N/A
app pub date -
Feb 13, 1992
filing date -
Feb 13, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Filterable liquid media are continuously filtered by circulating same in a closed circulation loop, to and tangentially through a filtration module provided therealong which confines at least one filtration membrane, e.g., a microfiltration, ultrafiltration or reverse osmosis membrane, and which includes a permeate outlet, and by adjusting the flowrate but not the driving pressure of circulating liquid medium, notably by means of an apertured and perforated rotating disc, as to establish a non-steady periodic pseudophysiological flow thereof, at least over the working face surfaces of the at least one membrane.
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