Modified Nanofiber Membrane for Cleaning of Oily Wastewater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F21%3A00008625" target="_blank" >RIV/46747885:24620/21:00008625 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.melpro.cz/" target="_blank" >https://www.melpro.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modified Nanofiber Membrane for Cleaning of Oily Wastewater

Popis výsledku v původním jazyce

Nanofiber technology has gained huge interest in various industrial applications recently due to its high specific surface area, porous structure, interconnected nanoscale pore size, pore size distribution, and chances for alteration of surface properties. Fiber-based membranes can provide advantages for the separation of oily wastewater. Nevertheless nanofibers unique properties; there is no real industrial application for the oil/water separation systems. The main reason is the low mechanical properties of nanofibers. Another reason is low wettability because of the polymeric structure. Herein, we focus on these two problems. First, the mechanical strength of the nanofiber membranes was improved using a special lamination method. Second, the surface of the various polymeric membranes was modified to improve membrane wettability. Polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), and polyamide 6 (PA6) nanofibers was selected for the membrane preparation. A two-step modification was done using Ar plasma treatment and methacrylic acid (MAA) grafting, respectively. According to results, modification significantly improved membrane permeability as shown in Figure 1. Moreover, the membranes showed hydrophilic and oleophobic properties after modification.

Název v anglickém jazyce

Modified Nanofiber Membrane for Cleaning of Oily Wastewater

Popis výsledku anglicky

Nanofiber technology has gained huge interest in various industrial applications recently due to its high specific surface area, porous structure, interconnected nanoscale pore size, pore size distribution, and chances for alteration of surface properties. Fiber-based membranes can provide advantages for the separation of oily wastewater. Nevertheless nanofibers unique properties; there is no real industrial application for the oil/water separation systems. The main reason is the low mechanical properties of nanofibers. Another reason is low wettability because of the polymeric structure. Herein, we focus on these two problems. First, the mechanical strength of the nanofiber membranes was improved using a special lamination method. Second, the surface of the various polymeric membranes was modified to improve membrane wettability. Polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), and polyamide 6 (PA6) nanofibers was selected for the membrane preparation. A two-step modification was done using Ar plasma treatment and methacrylic acid (MAA) grafting, respectively. According to results, modification significantly improved membrane permeability as shown in Figure 1. Moreover, the membranes showed hydrophilic and oleophobic properties after modification.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů