现代化工

现代化工 ›› 2023, Vol. 43 ›› Issue (5) : 106-108,114. DOI: 10.16606/j.cnki.issn0253-4320.2023.05.022

科研与开发

改性污泥炭/TiO₂/PVP/PVDF超滤膜的制备及其性能测试

房平, 胡张凡, 温璐, 任鹏, 李岩, 范恩然

作者信息 +

Preparation of modified sludge-based carbon/TiO₂/PVP/PVDF ultrafiltration membrane and test on its performance

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文章历史 +

Received		Published
2022-06-23		2023-05-20
Issue Date	Revised Date
2023-05-16	2022-06-23

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摘要

采用铁离子改性污泥炭(Fe₃O₄/SAC磁质炭)、二氧化钛(TiO₂)和聚乙烯吡咯烷酮(PVP)为添加剂进行聚偏氟乙烯(PVDF)膜的改性,并对共混膜的各项性能进行测试和表征。结果表明,当TiO₂和Fe₃O₄/SAC磁质炭质量分数分别为0.15%、0.2%时,膜的综合性能最佳。此时,接触角为48.5°,纯水通量为124 3.43 L/(m²·h),牛血清蛋白截留率为95.21%。

Abstract

The modified sludge-based carbon (Fe₃O₄/SAC magnetic carbon),titanium dioxide (TiO₂) and polyvinylpyrrolidone (PVP) are used as additives to modify polyvinylidene fluoride (PVDF) membrane,and the properties of the blending membrane are tested and characterized.The results show that the modified membrane exhibits the best performance when the mass fractions of TiO₂ and Fe₃O₄/SAC magnetic carbon are 0.15% and 0.2%,respectively.The optimal membrane has a contact angle of 48.5°,a pure water flux of 1 243.43 L/(m²·h),and showing a 95.21% of rejection rate to bovine serum protein.