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首页> 外文期刊>Journal of industrial and engineering chemistry >Preparation of high antibiofouling amino functionalized MWCNTs/PES nanocomposite ultrafiltration membrane for application in membrane bioreactor
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Preparation of high antibiofouling amino functionalized MWCNTs/PES nanocomposite ultrafiltration membrane for application in membrane bioreactor

机译：高抗污氨基功能化MWCNTs / PES纳米复合超滤膜的制备及其在膜生物反应器中的应用

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Membrane bioreactor (MBR) is an innovative hybrid biotechnology for wastewater treatment. However, its application is constrained by its tendency to fouling. Various procedures are applied to reduce membrane fouling. In this work, nanocomposite membranes were prepared by embedding amino functionalized multi-walled carbon nanotubes (NH2-MWCNTs) and were used for improving membrane surface hydrophilicity and subsequently the reduction of the membrane biofouling. The NH2-MWCNTs were synthesized and used as nanofiller in preparation of polyethersulfone (PES) ultrafiltration (UF) membrane. The modified MWCNTs were blended with different weight percentage in the casting solution, i.e. 0.05, 0.1 and 1 wt.%. In this study, the effect of the NH2-MWCNTs on membrane morphology and antibiofouling property was investigated. The Fourier transform infrared (FT-IR) spectra analysis showed that the -NH2 functional groups formed on the surface of MWCNTs. The nanocomposite membranes prepared with different contents of NH2-MWCNTs nanofiller were characterized using contact angle, scanning electron microscopy (SEM), and permeation tests. The SEM images displayed a finger-like and porous structure for all synthesized UF membranes. Contact angle measurements indicated that NH2-MWCNTs nanofiller improved the hydrophilicity of the obtained membranes. Fouling resistances of the membranes elucidated by activated sludge suspension filtration and measurements of flux recovery ratio (FRR). The results of the experiments revealed that the 0.1 wt.% NH2-MWCNTs membrane had the best permeability, hydrophilicity and antibiofouling properties. It was quite a surprise to discover that inclusion of only about 0.1 wt.% of the amino functionalized MWCNTs in the fabrication of membrane could spring up a generation of membrane with antibiofouling capability for MBRs. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：膜生物反应器（MBR）是一种用于废水处理的创新混合生物技术。但是，其应用受到结垢趋势的限制。采取了各种程序来减少膜结垢。在这项工作中，纳米复合膜是通过嵌入氨基官能化的多壁碳纳米管（NH2-MWCNT）制备的，并用于改善膜表面亲水性并随后减少膜生物污染。合成了NH2-MWCNTs，并将其作为纳米填料用于制备聚醚砜（PES）超滤（UF）膜。将改性的MWCNT以不同的重量百分比，即0.05、0.1和1重量％混合在浇铸溶液中。在这项研究中，研究了NH2-MWCNTs对膜形态和抗污垢性能的影响。傅立叶变换红外光谱（FT-IR）分析表明，-NH2官能团形成在多壁碳纳米管的表面。使用接触角，扫描电子显微镜（SEM）和渗透测试对含有不同含量的NH2-MWCNTs纳米填料的纳米复合膜进行了表征。 SEM图像显示了所有合成的UF膜的手指状和多孔结构。接触角测量表明，NH2-MWCNTs纳米填料改善了所得膜的亲水性。通过活性污泥悬浮液过滤和通量回收率（FRR）的测量阐明了膜的抗污性。实验结果表明，0.1重量％的NH 2 -MWCNTs膜具有最佳的渗透性，亲水性和抗生物结垢性能。令人惊讶的是，发现在膜的制造中仅包含约0.1 wt。％的氨基官能化MWCNT可以涌现出具有MBR防污能力的膜。 （C）2015韩国工业和工程化学学会。由Elsevier B.V.发布。保留所有权利。

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