C. Serra et al., DEAD-END ULTRAFILTRATION IN HOLLOW-FIBER MODULES - MODULE DESIGN AND PROCESS SIMULATION, Journal of membrane science, 145(2), 1998, pp. 159-172
Ultrafiltration in a hollow-fiber module operating with outside-in and
dead-end flow at a constant flow rate was simulated using a model tha
t takes into account the longitudinal pressure drops inside the fibers
and within the fiber bundle. The model considers both the filtration
phase during which the membrane is fouled by the formation of a filter
cake and the backwash phase in which it is cleaned, so as to predict
the net rate of production of the module during an operating cycle. Th
e results show that there is a combination of packing density and fibe
r diameter that gives a maximum net flow rate. Furthermore, this model
allows the influence of operating conditions and feed properties on t
he module performance to be estimated. This can be used to determine h
ow operating parameters must be modified when there is a change in the
feed properties. (C) 1998 Elsevier Science B.V.