Abstract
An asymmetric polysulphone hollow fiber membrane permeator was used to concentrate polio I virus from 5 and 50-L of deionized- and tap-water. The objective of the study was to evaluate the effect of several independent variables—membrane type and morphology, initial virus concentration, initial feed volume, feed water type and backwash recovery of virus—on process performance. Also, it was the purpose of this study to compare performance for the asymmetric polysulphone and semidense symmetric cellulose acetate hollow fiber membranes (Belfort, Rotem and Katzenelson, 1975). From the results presented here and from a general chemical and biological stability point of view, the polysulphone membranes were superior for virus concentration. The module tested here proved to be versatile and continuously reusable. Finally, in no case and under all conditions studied was polio I virus detected in the permeate.
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