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Pore design and engineering for filters and membranes
journal contribution
posted on 2012-01-24, 14:22 authored by Richard Holdich, S.R. Kosvintsev, Iain W. Cumming, Sergey ZhdanovIn filtration, the concept of pore size is not easy to define. In microfiltration, there are
numerous advantages in employing a surface filtering membrane, rather than one relying
on depth filtration mechanisms from a tortuous pore flow channel. Modern
manufacturing techniques provide means to produce surface filtering membranes. For
filtration, it is shown that a suitable pore design is an array of long thin slots. An analysis
of fluid flow through the slots suggests that a short slot is adequate, but experimental
data with suspended material indicates that slot length is important. Using long slots
and careful control of the flow through the membrane it is possible to filter deforming
particles such as oil drops from water.
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- Aeronautical, Automotive, Chemical and Materials Engineering
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