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Blend polyethersulfone/zirconium oxychloride octahydrate membranes crosslinked by polyvinyl alcohol layer for high saline water desalination
Journal of Polymer Engineering ( IF 2 ) Pub Date : 2020-07-28 , DOI: 10.1515/polyeng-2020-0030
Radwa Taman 1 , Moustapha S. Mansour 1 , Dina A. Elgayar 1 , Heba Abdallah 2 , Marwa S. Shalaby 2
Affiliation  

Abstract Mixed matrix membranes were prepared by blending polyethersulfone with zirconium oxychloride octahydrate (ZOH) solution, and coating by polyvinyl alcohol layer. Different analyses were applied in the prepared membranes. Membranes performances were examined using different salty solutions concentrations (5000, 10,000 and 20,000 mg/L) and a real sample from highly concentrated seawater (brine) of 1,30,900 mg/L. The results indicate that blending polyethersulfone with 1.5% ZOH and coating with polyvinyl alcohol (PVA) cross-linking layer (M4) provides salt rejection of 99.9% with permeate flux of 32.4 L/m2.h for the salt solution of 5000 mg/L, while salt rejection was 92% with permeate flux of 11.1 L/m2.h for the salt solution of 1,30,900 mg/L. The results indicate enhancement in the hydrophilicity of the membranes especially after coating by the PVA layer and increasing the ZOH%, such as the high permeate flux and the lowest contact angle of prepared membrane M4 (1.5% ZOH) which was 39.7°. A long time experiment was applied on the prepared membrane (M4), where the results indicate that the permeate flux for a long time was approximately fixed for 120 h, which indicates that the membrane can be considered as a self-cleaning membrane.

中文翻译:

聚乙烯醇层交联的混合聚醚砜/氧氯化锆八水合物膜用于高盐水淡化

摘要 将聚醚砜与八水氧氯化锆(ZOH)溶液共混,用聚乙烯醇层包覆制备混合基质膜。在制备的膜中应用了不同的分析。使用不同的盐溶液浓度(5000、10,000 和 20,000 mg/L)和来自 1,30,900 mg/L 的高浓度海水(盐水)的真实样品来检查膜性能。结果表明,将聚醚砜与 1.5% ZOH 共混并涂上聚乙烯醇 (PVA) 交联层 (M4) 可提供 99.9% 的脱盐率,5000 mg/L 的盐溶液的渗透通量为 32.4 L/m2.h ,而对于 1,30,900 mg/L 的盐溶液,脱盐率为 92%,渗透通量为 11.1 L/m2.h。结果表明,膜的亲水性增强,特别是在用 PVA 层涂覆并增加 ZOH% 后,例如高渗透通量和制备的膜 M4 (1.5% ZOH) 的最低接触角为 39.7°。对制备的膜(M4)进行长时间实验,结果表明,长时间的渗透通量大约固定为120 h,这表明该膜可以被认为是一种自清洁膜。
更新日期:2020-07-28
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