دانلود رایگان مقاله لاتین غشا اولترافیلتراسیون هموفان از سایت الزویر
عنوان فارسی مقاله:
افزایش عملکرد و خواص ضدرسوبی سطح غشا اولترافیلتراسیون هموفان با نانوذرات سالیسیلات های alumoxane
عنوان انگلیسی مقاله:
Enhancing performance and surface antifouling properties of polysulfone ultrafiltration membranes with salicylate-alumoxane nanoparticles
سال انتشار : 2017
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مقدمه انگلیسی مقاله:
1. Introduction
Ultrafiltration (UF) is a membrane separation process driven by pressure difference [1,2]. It has been employed for the removal of various components such as macromolecules, proteins, and viruses from different solutions [3,4], in food processing, water and wastewater treatment and seawater desalination [5,6]. Low operating costs, high flux, satisfactory permeate quality, and simplicity are some advantages of UF over othermembrane technologies [7,8]. The physical and chemical properties of polymers used in manufacturing UF membranes have strong effects on the structure and performance of the membranes [9,10]. Examples of such polymers are polysulfone (PS) [11], polyethersulfone (PES) [12], cellulose acetate (CA) [13], polyvinylidene fluoride (PVDF) [14], polyacrylonitrile (PAN) [15], polyethylene (PE), polypropylene (PP), and polyamide and polyimide [16]. Among these, PS is widely used due to its appealing physicochemical characteristics such as highthermal stability, adequate mechanical strength, high chemical resistance over a wide range of pH, and excellent film forming ability for UF applications [17,18]. However, a major disadvantage of PS is its hydrophobic nature, which causes membrane fouling [19,20]. Membrane fouling can be influenced by membrane characteristics, feed solution properties and operation conditions [21]. Typically, smooth and highly hydrophilic surfaces resist fouling [22]. Therefore, to improve membrane resistance against fouling, the surface hydrophilicity of the membrane should be improved [23]. Various methods have been applied to improve the surface hydrophilicity of UF membranes. Among them, incorporation of hydrophilic nanoparticles into polymer matrix is an effective way of providing membranes with adequate fouling resistance [24,25]. To prepare nanocomposite membranes, various nanoparticles such as titania (TiO2) [26], mesoporous silica (SiO2) [27], SiO2–GO [28], alumina (Al2O3) [4], zirconia (ZrO2) [29], zinc oxide (ZnO) [20], silver (Ag) [30], zeolite [31], and multi-walled carbon nanotubes [7,32] have been used. Arsuaga et al. [33] investigated the effect of metal oxide nanoparticles on the morphology and performance of nanocompositemembranes. They found that the presence of nanoparticles in the casting solution decreases contact angle, increases water flux, and improves fouling resistance. Vatanpouret al. [34] studied the antifouling properties of MMMs incorporated with boehmite nanoparticles. The addition of boehmite nanoparticles to the membranes changed the structure and morphology of the resulting membranes and created more hydrophilic and smoother surfaces, leading to a substantial increase in the solution flux and flux recovery ratio. While there have been many studies on modifying PSUF membranes using various hydrophilic nanoparticles, to best of our knowledge, there has been no reported study of using SA nanoparticles in the PS casting solution. SA nanoparticles form a stable inorganic material that is inexpensive, non-toxic, and resistantto chemical cleaning agents. Our expectation was that the addition of SA nanoparticles improves the hydrophilicity and surface properties, and decreases fouling of the MMMs due to the extra OH groups on their surfaces. In this work, we aimed to fabricate novel PS/SA- UF membranes with satisfactory antifouling properties. To achieve this, we synthesized SA nanoparticles and loaded them into PS to fabricate high performance MMMs via the phase inversion method. Finally, the characteristics, structure, and morphology of the fabricated membranes were studied.
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کلمات کلیدی:
Improving the antifouling property of polysulfone ultrafiltration ... xlink.rsc.org/?DOI=c3cp50955a Improving the antifouling property of polysulfone ultrafiltration membrane by incorporation of ... The separation performance and the antifouling property of the prepared ... enhanced by the addition of iGO, and we attributed the enhanced antifouling ... zeta potential and the improved smoothness of the membrane surface. Enhancing the Compatibility, Hydrophilicity and Mechanical Properties ... www.mdpi.com/2073-4360/8/10/349/pdf by Z Ding - 2016 - Related articles Oct 14, 2016 - Mechanical Properties of Polysulfone Ultrafiltration. Membranes with ... introduction of anti-fouling materials to the membrane matrix [18–20]. ... show better hydrophilic performance and mechanical properties than a majority of widely used ..... Higher hydrophilicity promotes uniform surfaces and enhances ... [PDF]Membranes with Surface-Enhanced Antifouling Properties for Water ... www.mdpi.com/2077-0375/7/1/13/pdf by N Shahkaramipour - 2017 Mar 5, 2017 - remove microbes, cells and bacteria [1,3]; ultrafiltration (UF) membranes with ... technology is high performance membranes with high water ... Surface Modification to Enhance Antifouling Properties ..... (a) A polysulfone UF membrane; (b) a PDA-coated membrane; (c) a PDA-g-PEG modified membrane;. Enhancing antifouling property of polysulfone ultrafiltration membrane ... www.academia.edu/.../Enhancing_antifouling_property_of_polysulfone_ultrafiltratio... Enhancing antifouling property of polysulfone ultrafiltration membrane by grafting ... Attenuated total reflectance Fourier Surface modification UV-initiated grafting .... Casting solution was prepared performance of PSF and modified membranes. Development of High-Antifouling PPSU Ultrafiltration Membrane by ... https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC) by J Liu - 2016 - Related articles Jun 21, 2016 - Development of High-Antifouling PPSU Ultrafiltration Membrane by Using ... ultrafiltration membranes with enhanced antifouling properties were ... The performance efficiency of the membrane was evaluated by ... surface with a higher efficient filtration area, which would enhance antifouling properties. InCIEC 2015: Proceedings of the International Civil and ... https://books.google.com/books?isbn=9811001553 Marina Yusoff, Nor Hayati Abdul Hamid, Mohd Fadzil Arshad - 2016 - Technology & Engineering The addition of SiO2 was affecting the performance of the membranes in terms of ... “Enhancing antifouling property of polysulfone untrafiltration membrane by grafting ... Ultrafiltration Membranes via Surface Property analysis and fpuling test.
