Sieve mechanism estimations for microfiltration membranes with elliptical pores |
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Authors: | Patrick L. Hanks Caitlin A. Forschner Douglas R. Lloyd |
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Affiliation: | aDepartment of Chemical Engineering, One University Station, C0400, The University of Texas, Austin, TX 78712, United States |
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Abstract: | An established sieve mechanism model for microfiltration was modified to incorporate elliptical pore shapes that arise from uni-axial elongation of track-etch (TE) membranes. The particular membranes investigated were poly(ethylene teraphthalate) TE membranes with an average pore size of 0.6 μm and elongations up to 35.6%. The modified sieve theory predicts that a membrane that has undergone a 35.6% elongation allows for twice the throughput compared to the original membrane with circular pores, while maintaining the same removal ability for a solution containing 1 μm particles. |
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Keywords: | Track-etch Uni-axial elongation Stretching Sieve mechanism |
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