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2000
Volume 13, Issue 4
  • ISSN: 1872-2121
  • E-ISSN: 2212-4047

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.

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/content/journals/eng/10.2174/1872212113666190110105354
2019-12-01
2025-07-03
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  • Article Type:
    Review Article
Keyword(s): design; filtration; Membrane; nanopore; resistances; separation
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