Recent Patent on a Tree-type Cylindrical-shaped Nanoporous Filtering Membrane

Author(s): Yongbin Zhang*

Journal Name: Recent Patents on Engineering

Volume 13 , Issue 4 , 2019

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Graphical Abstract:


Background: Nanoporous filtering membranes can be used for super purification including a liquid-liquid separation. It is the aim of engineers to design these membranes with good filtration capabilities, high fluxes and satisfying mechanical strengths. Realistic membranes need to have a balance among these performances to achieve satisfactory overall performances.

Objective: The study aims to show a tree-type cylindrical-shaped nanoporous filtering membrane with good characteristics.

Methods: According to the principle of the nanotube tree for transportation presented previously, here the design method of a tree-type cylindrical shaped nanoporous filtering membrane is presented and the flow resistances of this membrane have been calculated for varying operational parameter values.

Results: It is shown that the invented membrane possesses nanoscale filtration pores and larger flow-resistance-reducing pores. These pores are densely evenly distributed on the membrane surface. The membrane practically has a low flow resistance and thus a high flux if its thickness is as small as possible. It can also be used for a liquid-liquid separation if the mixed liquids have largely different interactions with the pore walls of the membrane.

Conclusion: By an appropriate design, the invented membrane has a good overall performance including the capabilities of super purification or a liquid-liquid separation, the high flux and a satisfactory mechanical strength.

Keywords: Membrane, nanopore, filtration, separation, design, resistances.

L.J. Liu, J. Dong, L.X. Zhang, W. Zou, W. Xiong, L.W. Wang, Y.Y. Li, S.F. Zhang, C.G. Xu, X. Fang, W.Y. Liu, and W. Tao, “A system and method for improving life chemicals and deeply treating wastewater by using powder activated carbons”. CN201710471057, June 20, 2017.
D.B. Pall, and A. Krasnoff, "Microporous filter system and process". US Patent 4431545, February 14, 1984.
J.W. Tringe, R.L. Balhom, and S. Zaidi, "Nanoporous membrane". U.S. Patent 20130306549, Novenmber 21, 2013.
M.A. Hillmyer, E.A. Jackson, and Y. Lee, "Nanoporous filtration membranes". US Patent 20150336058, January 31, 2015
P. Jao, Y.K. Yoon, and G.J. Kim, "Fabrication of nanoporous membrane". US Patent 9353461, May 11, 2016.
E.A. Jackson, and M.A. Hillmyer, "Nanoporous membranes derived from block copolymers: from drug delivery to water filtration", ACS Nano, vol. 4, pp. 3548-3553, 2010.
W.H. Fissel, A. Dubnisheva, A.N. Eldridge, A.J. Fleischman, A.L. Zydney, and S. Roy, "High-performance silicon nanopore hemofiltration membranes", J. Membr. Sci., vol. 326, pp. 58-63, 2009.
Y.B. Zhang, and H.D. Yuan, "A cylindrical-shaped nanoporous filtration membrane".. CN201710152010, October 09, 2017.
Y.B. Zhang, and H.D. Yuan, "A kind of tree-shaped nanoscale cylindrical hole filter membrane". CN201711441016.6, March 07, 2017
Y.B. Zhang, "“A tree-type cylindrical shaped nonporous filtering membrane”, Front", Heat Mass Transf., vol. 10, pp. 10-16, 2018.

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Article Details

Year: 2019
Page: [308 - 311]
Pages: 4
DOI: 10.2174/1872212113666190110105354
Price: $25

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