TY - JOUR
T1 - Effect of transmembrane pressure on rejection of viruses by ultrafiltration membranes
AU - Arkhangelsky, Elizabeth
AU - Gitis, Vitaly
N1 - Funding Information:
This project was partially supported by a grant from The Stephen and Nancy Grand Water Research Institute (GWRI). E.A. thanks the Rieger Foundation for a Rieger-JNF fellowship in environmental studies. Special thanks are due to Mrs. I. Mureinik and Mr. P. Martin for scientific editing of the manuscript.
PY - 2008/9/22
Y1 - 2008/9/22
N2 - Although partial penetration of ultrafiltration membranes by viruses and bacteria is well documented, there is no satisfactory explanation for the phenomenon. The current study seeks a possible explanation by studying the retention of viruses at different transmembrane pressures (TMPs). In contrast to previous predictions, higher TMPs lead to reduced virus retention levels. Based on indirect evidences it is proposed that the penetration occurs because of the formation during operation, rather than the initial presence, of abnormally large pores. It is therefore suggested that since pore enlargement is induced by high TMPs, high virus retention levels can be obtained only at low TMP values.
AB - Although partial penetration of ultrafiltration membranes by viruses and bacteria is well documented, there is no satisfactory explanation for the phenomenon. The current study seeks a possible explanation by studying the retention of viruses at different transmembrane pressures (TMPs). In contrast to previous predictions, higher TMPs lead to reduced virus retention levels. Based on indirect evidences it is proposed that the penetration occurs because of the formation during operation, rather than the initial presence, of abnormally large pores. It is therefore suggested that since pore enlargement is induced by high TMPs, high virus retention levels can be obtained only at low TMP values.
KW - E. coli
KW - MS2
KW - PES membrane
KW - T4
KW - phi X174
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U2 - 10.1016/j.seppur.2008.03.013
DO - 10.1016/j.seppur.2008.03.013
M3 - Article
AN - SCOPUS:48349091626
SN - 1383-5866
VL - 62
SP - 619
EP - 628
JO - Separation and Purification Technology
JF - Separation and Purification Technology
IS - 3
ER -