Ultrathin membranes will likely see great utility in future membrane-based separations, but key aspects of the performance of these membranes, especially when they are used to filter protein, remain poorly understood. In this work we perform protein filtrations using new nanoporous silicon nitride (NPN) membranes. Several concentrations of protein are filtered using dead end filtration in a benchtop centrifuge, and we track fouling based on the amount of filtrate passed over time. A modification of the classic fouling model that includes the effects of using a centrifuge and allow for the visualization of a transition between pore constriction and cake filtration demonstrate that for a range of protein concentrations, cake filtration supersedes pore constriction after ∼30 seconds at 690 g.
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ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting
July 10–14, 2016
Washington, DC, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5034-3
PROCEEDINGS PAPER
Ultrathin Membrane Fouling Mechanism Transitions in Dead-End Filtration of Protein Available to Purchase
Karl J. P. Smith,
Karl J. P. Smith
University of Rochester, Rochester, NY
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Joshua Winans,
Joshua Winans
University of Rochester, Rochester, NY
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James McGrath
James McGrath
University of Rochester, Rochester, NY
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Karl J. P. Smith
University of Rochester, Rochester, NY
Joshua Winans
University of Rochester, Rochester, NY
James McGrath
University of Rochester, Rochester, NY
Paper No:
ICNMM2016-7989, V001T15A001; 6 pages
Published Online:
November 9, 2016
Citation
Smith, KJP, Winans, J, & McGrath, J. "Ultrathin Membrane Fouling Mechanism Transitions in Dead-End Filtration of Protein." Proceedings of the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. Washington, DC, USA. July 10–14, 2016. V001T15A001. ASME. https://doi.org/10.1115/ICNMM2016-7989
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