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| Effects of Surface Wettability of Glass Fiber Filter Paper on the Coalescence and Separation Performance of Emulsified Water |
| Received:February 06, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.09.016 |
| Key Words:coalescence wettability water separation glass fiber filter paper emulsified water |
| Fund Project:国家重点研发计划（2021YFB3802700）。 |
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| Abstract:In this study， glass fiber filter paper with different surface wetting properties were prepared from glass fiber filter paper base paper sized by reinforced resin with different wetting properties. The wetting properties of the glass fiber filter papers and reinforced resin coating film were characterized by contact angle both in air and oil， and the water separation performance of glass fiber filter papers with different wetting properties under high interfacial tension oil and low interfacial tension oil was tested according to ISO 16332: 2018. The results showed that glass fiber filter papers with different wetting properties presented good water separation performance for high interfacial tension oil， but the oil-water separation performance of the glass fiber filter paper rapidly decreased under low interfacial tension oil. With the improvement of the hydrophobicity of the reinforced resin coating film， the water separation performance of glass fiber filter papers for low interfacial tension oil showed a rising and then decreasing trend. When reinforced resin used in the glass fiber filter paper with water contact angle of its film of about 30° in air and 55° in oil， the glass fiber filter paper presented best oil-water separation performance， with steady-state water separation efficiency of 84.1% and maximum pressure drop of only 0.73 kPa. |
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