Synthesis and evaluation of PVC-Cu/Al2O3 nanocomposite membranes for removing of natural organic matter from the wastewater

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Seyed Mehdi Sajjadi, Habib Etemadi, Masoumeh Zaremanesh
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引用次数: 0

Abstract

The synthesis of Cu/Al2O3 nanoparticles (NPs) was conducted by the citric acid sol–gel technique. We used the synthesized NPs to enhance PVC membranes and create PVC-Cu/Al2O3 nanocomposite membranes. The quantities of NPs utilized were 0, 0.5, 1, 1.5, and 2 wt.% of solid phase. The point of this study was to look into how PVC-Cu/Al2O3 membranes can be used to remove natural organic matter (NOM) from polluted water in submerged membrane systems. The membranes treated with NPs exhibited increased porosity, improved hydrophilicity, and smoother surface. Results revealed that the incorporation of 1 wt.% NPs into PVC (PVC-CA1) demonstrated the highest degree of hydrophilicity and porosity. Moreover, PVC-CA1 exhibited an increased number of pores, with larger pores present on the top surface and larger macrovoids on the cross-sectional surface. The PVC-CA1 exhibited the highest flux recovery ratio (FRR) and highest rejection rate for HA, with values of 82.6% and 92.6%, respectively. PVC-CA1, which had an irreversible fouling ratio (IFR) of 17.3%, demonstrated the greatest resistance to fouling. Generally, incorporation of NPs into PVC resulted in increased hydrophilicity, enhanced porosity, uniform dispersion, smoother surface characteristics, and consequently improved antifouling properties. Furthermore, among the fabricated membranes, PVC-CA1 had the most favorable antifouling performance.

用于去除废水中天然有机物的 PVC-Cu/Al2O3 纳米复合膜的合成与评估
我们采用柠檬酸溶胶-凝胶技术合成了铜/Al2O3 纳米粒子(NPs)。我们用合成的 NPs 增强 PVC 膜,并制造出 PVC-Cu/Al2O3 纳米复合膜。使用的 NPs 数量分别为固相的 0、0.5、1、1.5 和 2 wt.%。本研究的目的是探讨如何利用 PVC-Cu/Al2O3 膜在浸没式膜系统中去除污染水中的天然有机物(NOM)。经过 NPs 处理的膜孔隙率增加,亲水性提高,表面更加光滑。结果表明,在聚氯乙烯(PVC-CA1)中加入 1 wt.% 的 NPs 后,亲水性和孔隙率最高。此外,PVC-CA1 的孔隙数量也有所增加,顶面的孔隙更大,横截面上的大空隙也更大。PVC-CA1 的通量回收率(FRR)最高,对 HA 的排斥率也最高,分别为 82.6% 和 92.6%。PVC-CA1 的不可逆污垢率 (IFR) 为 17.3%,具有最强的抗污垢能力。一般来说,在 PVC 中加入 NPs 可增加亲水性、提高孔隙率、均匀分散、使表面更光滑,从而改善防污性能。此外,在制成的膜中,PVC-CA1 的防污性能最好。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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