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

IF 1.4 4区 工程技术 Q3 ENGINEERING, CHEMICAL
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
自引率
11.10%
发文量
111
期刊介绍: Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).
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