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聚乙硫膜对性清洁溶液的阻力

Marek Gryta¹, Piotr Woźniak¹

¹Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, ul. Pułaskiego 10, 70-322 Szczecin, Poland.

|February 23, 2024

概括

聚乙硫 (PES) 超膜,即使是那些含有聚烯 (PVP) 的膜,在性洗车溶液中经过18个月后,也显示出减少了德克斯分离. 然而,它们在处理合成洗车废水方面的效率基本上没有受到影响.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

聚乙硫 (PES) 是用于超过 (UF) 膜的常见聚合物.
由于PES的疏水性,因此需要使用像聚烯 (PVP) 这样的水友性添加剂来减轻污染.
聚乙烯增强了 PES 对性溶液的抗性,这表明性废物处理的潜力.

研究的目的:

研究 PES 膜在性洗车溶液中的长期稳定性和性能.
评估长时间暴露于性环境对膜结构和分离能力的影响.
评估PES膜是否适用于分离和处理性清洁溶液.

主要方法:

使用的自制和商业PES超膜 (UE10-10 kDa,UE50-100 kDa) 含有PVP.
暴露在性洗车溶液中的膜 (pH 11.3-11.5) 18个月.
使用德克斯过和合成洗车废水 (COD,NTU,表面活性剂) 的分析评估了膜结构和分离性能的变化.

主要成果:

长期性暴露引起了PES膜的表面层的结构变化,特别是那些含有PVP的膜.
暴露后,德克斯的分离效率在不同类型的膜上下降了30-60%.
尽管结构修改,膜保持了类似的分离效率,COD,NTU和阳离子表面活性剂在合成洗车废水.

结论:

包括PVP在内的PES膜在长时间暴露于性洗车溶液时会出现结构变化.
虽然右分离减少,但这些膜在处理复杂的洗车废水方面的整体有效性仍然很强.
PES膜在性工业废水处理中具有应用潜力,尽管表面层发生了变化,但其性能具有弹性.

关键词:

这就是 PES PES PES 的原因.在PVP中,PVP是PVP.这是一种性溶液.洗车车辆洗车的地方.超过是一种超过.

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