含不同氧化物纳米材料的超滤膜的合成与性能:实验与建模

IF 4.3 4区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL Water Reuse Pub Date : 2023-09-01 DOI:10.2166/wrd.2023.092
Nawaf Bin Darwish, Abdulrahman Alalawi, Hamad AlRomaih, Nasser Alotaibi, Musaad AlEid
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引用次数: 0

摘要

在膜过滤技术中,膜污染是优化效率的主要障碍,导致膜寿命短和运行成本高。通过将纳米材料纳入膜合成过程,可以获得特性和性能显著增强的混合基质膜。将氧化石墨烯(GO)、氧化铝(Al2O3)、氧化锡(SnO2)和氧化钛(TiO2)掺入聚醚砜(PESU)膜中。与纯膜相比,改性膜的透水性有所改善。对于Al2O3(PES-2)、TiO2(PES-3)、SnO2(PES-4)和GO(PES-5)膜,它分别从原始膜(PES-1)的65L/m2h巴增加到143.6、83.68、92.12、75.43L/m2h。研究发现,纳米颗粒的加入直接影响了膜的表面亲水性。结垢参数包括Rr(可逆结垢比)、Rir(不可逆结垢率)、Rt(总结垢率,和Frr(通量回收率),并进行测量以确定膜的结垢趋势。结果表明,当纳米颗粒掺入膜中时,膜的结垢倾向可以降低。实验结果最好用传统的单一结垢模型确定的滤饼层以及标准和中间堵塞机理模型来解释。
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Synthesis and performance of ultrafiltration membranes incorporated with different oxide nanomaterials: experiments and modeling
In membrane filtration technology, membrane fouling is the primary obstacle to optimizing efficiency and results in a short membrane lifetime and high operating costs. By incorporating nanomaterials into the membrane synthesis process, a mixed-matrix membrane with significantly enhanced characteristics and performance may be obtained. Graphene oxide (GO), aluminum oxide (Al2O3), tin oxide (SnO2), and titanium oxide (TiO2) were incorporated into a polyethersulfone (PESU) membrane. The water permeability of the modified membranes showed improvements when compared with the pure membrane. It increased from 65 L/m2 h bar for the pristine membrane (PES-1) to 143.6, 83.68, 92.12, 75.43 L/m2 h bar for Al2O3 (PES-2), TiO2 (PES-3), SnO2 (PES-4), and GO (PES-5) membranes, respectively. It was discovered that the membrane's surface hydrophilicity was significantly and directly affected by the incorporation of nanoparticles. Fouling parameters include Rr (Reversible fouling ratio), Rir (irreversible fouling ratio), Rt (total fouling ratio), and Frr (flux recovery ratio) and were measured to determine the membrane's fouling tendency. The results showed that the membrane's propensity for fouling could be reduced when nanoparticles were incorporated into it. The experimental results are best explained by the cake layer and both standard and intermediate blocking mechanism models, as determined by the traditional single fouling models.
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来源期刊
Water Reuse
Water Reuse Multiple-
CiteScore
6.20
自引率
8.90%
发文量
0
审稿时长
7 weeks
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