fMWNTs/GO/MnO2 nanocomposites as additives in a membrane for the removal of crystal violet

IF 0.8 4区工程技术 Q4 ENGINEERING, CHEMICAL Membrane Water Treatment Pub Date : 2021-09-01 DOI:10.12989/MWT.2021.12.5.205

Sabna, S. G. Thampi, S. Chandrakaran, P. SasinaE, P. Resmi

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Abstract

In this work, the performance of a mixed matrix membrane in the removal of crystal violet from aqueous solutions is reported. This membrane was fabricated by adding a nanocomposite (fMWNTs/GO/MnO2 NC) synthesized with functionalized multi-walled carbon nanotubes, graphene oxide, and manganese dioxide nanoparticles, to polysulfone. Details pertaining to the preparation and characterization of the membrane, evaluation of its performance in the removal of crystal violet, and antifouling properties of the membrane are reported in this paper. The membranes were fabricated by embedding varying concentrations of fMWNTs/GO/MnO2 NC (from 0 to 0.3wt%) in the Psf matrix. Incorporation of fMWNTs/GO/ MnO2 NC was found to enhance hydrophilicity, equilibrium water content, porosity, mean pore radius, pure water permeability and antifouling properties of the membrane. Analyses of surface morphology of the fabricated membranes revealed the presence of macro-voids in the matrix of the membrane after addition of fMWNTs/GO/MnO2 NC, resulting in an increase in pure water ﬂux and permeability. It was observed that 0.1wt% is the optimum concentration of fMWNTs/GO/ MnO2 NC in the Psf matrix since the membrane exhibited maximum hydrophilicity, equilibrium water content, porosity, pure water permeability and dye rejection at this concentration. Also, it was observed that the polysulfone membrane exhibited enhanced antifouling properties at this concentration of the nanocomposite.

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fMWNTs/GO/MnO2纳米复合材料作为膜中去除结晶紫的添加剂

本文报道了混合基质膜从水溶液中去除结晶紫的性能。该膜是通过将功能化多壁碳纳米管、氧化石墨烯和二氧化锰纳米颗粒合成的纳米复合材料(fMWNTs/GO/MnO2 NC)添加到聚砜中制备的。本文报道了膜的制备、表征、去除结晶紫性能的评价以及膜的防污性能。通过在Psf基质中包埋不同浓度的fMWNTs/GO/MnO2 NC(从0到0.3wt%)来制备膜。fMWNTs/GO/ MnO2 NC的掺入提高了膜的亲水性、平衡含水量、孔隙率、平均孔半径、纯水渗透性和防污性能。通过对制备膜表面形貌的分析发现，添加氧化石墨烯/氧化石墨烯/二氧化锰后，制备膜的基质中出现了较大的空隙，从而提高了纯水通量和渗透率。研究发现，在0.1wt%的pgf基质中，fMWNTs/GO/ MnO2 NC的最佳浓度为0.1wt%，因为在该浓度下，膜具有最大的亲水性、平衡含水量、孔隙率、纯水渗透性和抗染性。此外，我们还观察到，在这种浓度的纳米复合材料下，聚砜膜的防污性能增强。

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来源期刊

Membrane Water Treatment ENGINEERING, CHEMICAL-WATER RESOURCES

CiteScore

1.90

自引率

30.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Membrane and Water Treatment(MWT), An International Journal, aims at opening an access to the valuable source of technical information and providing an excellent publication channel for the global community of researchers in Membrane and Water Treatment related area. Specific emphasis of the journal may include but not limited to; the engineering and scientific aspects of understanding the basic mechanisms and applying membranes for water and waste water treatment, such as transport phenomena, surface characteristics, fouling, scaling, desalination, membrane bioreactors, water reuse, and system optimization.