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Science 21 May 1971:
Vol. 172. no. 3985, pp. 858 - 859
DOI: 10.1126/science.172.3985.858
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Articles

Steady-State Sieving across Membranes

E. H. Bresler 1, R. P. Wendt 2, and E. A. Mason 3

1 Veterans Administration Hospital and Tulane University School of Medicine, New Orleans, Louisiana 70140
2 Loyola University, New Orleans, Louisiana 70118
3 Brown University, Providence, Rhode Island 02912

The constraint of steady-state operation for sieving or ultrafiltration across membranes greatly restricts possible theoretical mechanisms. Effective sieving in the steady state requires the coexistence of a removal mechanism with the rejection mechanism. These points are illustrated without elaborate mathematics by a model of membranes in a series array with intervening compartments. This model also shows that in certain regimes the structure of the first membrane alone determines the overall sieving characteristics of the array.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Sieving Behavior of a Series Membrane System.
M. H. Friedman, R. L. McCally, E. H. Bresler, E. A. Mason, and R. P. Wendt (1972)
Science 175, 556-558
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