Silicon Carbide Tubular Membranes

The cross-section of silicon carbide membranes shows an asymmetric multilayer structure, in which microporous of different pore sizes are distributed. Driven by the trans-membrane pressure difference, Semicorex silicon carbide tubular membranes utilize these micropores to perform physical filtration of sewage and wastewater and achieve ultrafiltration effects. The screening aperture of Semicorex silicon carbide tubular membranes is generally between 2 and 100 nanometer, which allows them to effectively remove various macromolecular solutes, particles, suspended colloid, bacteria, and organic matter in wastewater.

The Production Process of Semicorex Silicon carbide tubular membranes

1. Selecting high-purity raw materials.

2. Mixing raw materials at specifically designed mixing ratio

3. Extrusion forming the desired body shape.

4. Sintering the dried green body.

5. Cutting the sintered substrate to the required dimension.

6. Cleaning and inspecting the substrate.

7. Applying the membrane layer to the substrate and sintering them again and repeating 2-4 times according to the precision needs.

8. Inspecting the finished silicon carbide membranes by rigorous testing.

The advantages of Semicorex Silicon carbide tubular membranes

1. Excellent hydrophilicity and oleophobicity

Since their surface water contact angle are only 8°, Semicorex silicon carbide tubular membranes exhibit excellent hydrophilicity during operating conditions. Their surface also possess a negative charge that creates electrostatic repulsion against oil substances, which makes them have excellent oleophobicity. Due to these two characteristics, Semicorex silicon carbide tubular membranes are well-suited for oily wastewater treatment in petrochemical and mechanical processing applications.

2. Remarkable clearwater flux capacity

Semicorex silicon carbide tubular membranes features a stepped multi-layer pore structure, with a porosity as high as 45% and a low pore tortuosity. This unique structure endows Semicorex silicon carbide tubular membranes with remarkable clearwater flux capacity, far exceeding that of filtration membranes made from other materials such as PVDF.

3. Exceptional service life

Silicon carbide materials have many outstanding inherent properties like high temperature resistance, corrosion resistance, and impact resistance. Different from the conventional PVDF membranes with a lifespan of only 3-5 years, Semicorex silicon carbide tubular membranes leverage these outstanding inherent properties to deliver an extended lifespan, typically up to 8 years.