Using advanced silicon carbide membranes from Saint-Gobain significantly reduces the equipment footprint, capital costs, shortens the water treatment process and reduces chemical usage.
Saint-Gobain is a worldwide leader in combining material and forming process expertise with application understanding to offer standard and customized ceramic membranes for challenging liquid filtration applications.
Advanced silicon carbide membranes from Saint-Gobain can remove total suspended solids, hydrocarbons (oil) and bacteria.
Crystar® FT filters offer the highest flux of any membrane materials.
Advanced silicon carbide membranes are chemically robust, and abrasion and erosion resistant. These membranes can be run in high temperature conditions and exhibit minimal fouling. Membranes can be cleaned in place to maintain consistent flux. This results in consistent output, reduced maintenance, and lower equipment and labor costs.
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Temperature (°C) | Crystar® FT Filters | Al2O3 | ||
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NaOH | 50% | 100 | ++ | -- |
HCL | 25% | 70 | ++ | -- |
HNO3 | 100% | 100 | ++ | - |
H2SO4 | 98% | 95 | + | -- |
HF | 50% | 50 | + | - |
Crystar® FT ceramic filters are typically made of:
A multilayer membrane that is the functional layer for the different filtration processes | A carrier material, whose particular features are the high porosity and large pores (D50>25 micron), that provide excellent permeability |
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Typical properties of Crystar® FT (Carrier material) | |
SiC content | ≥ 99% |
Chemical resistance | 0 to 14 PH value |
Maximum application temperature | < 1000°C (in air) |
Porosity | ≥ 40% |
Thermal expansion (20° - 1100°C) | 4.8 K-1*10-6 |
Pore size | ≥ 30 micron |
Flux (carrier)* | 140 m3/m2*/bar/h |
Back pulse pressure | max. 6 bar |
Cracking pressure | > 100 bar |
Tolerable transmembrane pressure | max. 6 bar |
Filter area (Ø = 32 mm, L = 1000 mm) | 0.42 m2 |
Weight | < 1000 g/m |
* Area of filter carrier: tube of Ø 30.5 mm (mean Ø of outer wall) |