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Fairey has been involved in the manufacture of Ceramic Crossflow Microfiltration Elements for many years, and has enjoyed success with its Standard Ceramic Elements in a number of varied applications.
To facilitate the cost effective use of ceramic technology for the treatment of larger volumes, FFSL has since developed the Star-Sep™ Ceramic Crossflow Membrane, which has a 5 x increase in filtration area.
The elements are available in two types, depending on the specific application.
1) The Star-Sep™ Ceramic Crossflow Element 1200mm long x 32mm Dia, having 19 x star channels.
2) The Star-Sep™ Ceramic Crossflow Element 600mm long x 20mm Dia, having 7 x star channels.
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19 Channel x 1200mm Star-StepTM Ceramic Crossflow Element |
7 Channel x 600mm Star-StepTM Ceramic Crossflow Element |
| Material |
α Alumina |
α Alumina |
| Maximum Pore Size |
6µm (substrate) |
5µm (substrate) |
| Median Pore Size |
3 µm (substrate) |
3 µm (substrate) |
| Available Membranes |
0.2, 0.35, 0.5, 0.8 and 1.2 µm |
0.2, 0.35, 0.5, 0.8 and 1.2 µm |
| Porosity |
35-45 Vol % |
35-45 Vol % |
| Flexural Strength |
40 Mpa |
45 Mpa |
| Nominal Diameter |
32 mm |
20 mm |
| Length |
1200 mm |
600 mm |
| Channel: Star ID |
2.8 mm |
2.8 mm |
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4.6 mm |
4.6 mm |
| Number of Channels |
19 |
7 |
| Filtration Area |
0.33 m2 |
0.06 m2 |
| pH Range |
0.5 to 13.5 |
0.5 to 13.5 |
| Maximum Temperature |
140°C * |
140°C * |
| Maximum Pressure |
8 bar |
8 bar |
The new generation of the Fairey nineteen channel star tubular energy efficient crossflow microfiltration membranes incorporate all the proven advanced features of the original seven channel star membrane with following advantages:-
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A 5 x increase in filtration surface area |
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Cost effective ceramic membrane element |
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Reduced module dimensions for a given membrane area |
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Less complex module installation |
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Reduction in footprint size |
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Reduced axial pressure drop per unit length |
The Star-Sep™ membrane filter has been specifically developed for efficient Crossflow Microfiltration. The filter channel’s unique ‘star’ form increases the filtration area and induces turbulence at lower crossflow velocities. Not only does this lower the volume compared with a circular channel of the same diameter, but also results in a reduction of the pumping energy requirement. The cost effectiveness of the process is therefore substantially improved.
As with the 19 Channel Star-StepTM element, FFSL's 7 channel ceramic crossflow element filter has been specifically developed for efficient Crossflow Microfiltration. The same unique 'star' form is employed, which increases the filtration area and induces turbulence at lower crossflow velocities.
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Long and Reliable Lifetime |
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High Stability in organic media |
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Rigid with no creep or deformation |
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Stable over a wide pH range |
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Corrosion and abrasion resistant |
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Insensitive to bacteria action |
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Can be repeatedly sterilised by steam or chemicals |
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Greater void area per unit area of filtration surface |
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Ability to be backwashed |
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Consistent pore size |
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Can process highly viscous fluids |
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Capable of regeneration after fouling |
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Membrane surface-bonded to substrate by strong ceramic bonds |
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